OSDN Git Service
Thierry Reding [Wed, 7 Feb 2018 17:40:27 +0000 (18:40 +0100)]
drm/nouveau: Make clock gate support conditional
The recently introduced clock gate support breaks on Tegra chips because
no thermal support is enabled for those devices. Conditionalize the code
on the existence of thermal support to fix this.
Fixes:
b138eca661cc ("drm/nouveau: Add support for basic clockgating on Kepler1")
Cc: Martin Peres <martin.peres@free.fr>
Cc: Lyude Paul <lyude@redhat.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Arnd Bergmann [Tue, 16 Jan 2018 13:44:50 +0000 (14:44 +0100)]
drm/nouveau/clk: fix gcc-7 -Wint-in-bool-context warning
gcc thinks that interpreting a multiplication result as a bool
is confusing:
drivers/gpu/drm/nouveau/nvkm/subdev/clk/gt215.c: In function 'read_pll':
drivers/gpu/drm/nouveau/nvkm/subdev/clk/gt215.c:133:8: error: '*' in boolean context, suggest '&&' instead [-Werror=int-in-bool-context]
Adding a temporary variable to contain the divisor helps make
it clear what is going on and avoids that warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Luis de Bethencourt [Wed, 17 Jan 2018 18:53:14 +0000 (18:53 +0000)]
drm/nouveau/mmu: Fix trailing semicolon
The trailing semicolon is an empty statement that does no operation.
Removing it since it doesn't do anything.
Signed-off-by: Luis de Bethencourt <luisbg@kernel.org>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Lyude Paul [Thu, 1 Feb 2018 18:13:59 +0000 (13:13 -0500)]
drm/nouveau: Introduce NvPmEnableGating option
This adds the NvPmEnableGating config option to nouveau, which can be
used to enable or disable clockgating for supported chipsets. Enabling
can be done by passing
config=NvPmEnableGating=1
To nouveau. If your chipset supports it, you'll see a message in your
kernel log indicating that clockgating is enabled. Since clockgating has
only had limited testing thus far, we leave this option disabled by
default for now.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Lyude Paul [Thu, 1 Feb 2018 18:13:58 +0000 (13:13 -0500)]
drm/nouveau: Add support for SLCG for Kepler2
That's right, there's still more power saving to go! Starting with
kepler 2, nvidia hardware has an additional level of clockgating known
as second level clockgating. The details of this are not exact, but it
seems to work by waiting for a collection of dependent hardware blocks
to be gated before taking affect. As with the previous series, this
results in another noticeable drop in power consumption and is
programmed in the same manner.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Lyude Paul [Thu, 1 Feb 2018 18:13:57 +0000 (13:13 -0500)]
drm/nouveau: Add support for BLCG on Kepler2
Same as the previous patch, but for Kepler2 now
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Lyude Paul [Thu, 1 Feb 2018 18:13:56 +0000 (13:13 -0500)]
drm/nouveau: Add support for BLCG on Kepler1
This enables BLCG optimization for kepler1. When using clockgating,
nvidia's firmware has a set of registers which are initially programmed
by the vbios with various engine delays and other mysterious settings
that are safe enough to bring up the GPU. However, the values used by
the vbios are more power hungry then they need to be, so the nvidia driver
writes it's own more optimized set of BLCG settings before enabling
CG_CTRL. This adds support for programming the optimized BLCG values
during engine/subdev init, which enables rather significant power
savings.
This introduces the nvkm_therm_clkgate_init() helper, which we use to
program the optimized BLCG settings before enabling clockgating with
nvkm_therm_clkgate_enable.
As well, this commit shares a lot more code with Fermi since BLCG is
mostly the same there as far as we can tell. In the future, it's likely
we'll reformat the clkgate_packs for kepler1 so that they share a list
of mmio packs with Fermi.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Lyude Paul [Thu, 1 Feb 2018 18:13:55 +0000 (13:13 -0500)]
drm/nouveau: Add support for basic clockgating on Kepler1
This adds support for enabling automatic clockgating on nvidia GPUs for
Kepler1. While this is not technically a clockgating level, it does
enable clockgating using the clockgating values initially set by the
vbios (which should be safe to use).
This introduces two therm helpers for controlling basic clockgating:
nvkm_therm_clkgate_enable() - enables clockgating through
CG_CTRL, done after initializing the GPU fully
nvkm_therm_clkgate_fini() - prepares clockgating for suspend or
driver unload
A lot of this code was originally going to be based off of fermi;
however it turns out that while Fermi's the first line of GPUs that
introduced this kind of power saving, Fermi requires more fine tuned
control of the CG_CTRL registers from the driver while reclocking that
we don't entirely understand yet.
For the simple parts we will be sharing with Fermi for certain however,
we at least add those into a new subdev/therm/gf100.h header.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 12 Jan 2018 07:05:33 +0000 (17:05 +1000)]
drm/nouveau/kms/nv50: fix handling of gamma since atomic conversion
We've still been directly using the legacy crtc gamma_set() hook even
after conversion to atomic modesetting.
For userspace clients this was fine, however, fbcon will use the atomic
property when it's running on an atomic driver, which means we miss its
colormap updates - which is particularly bad for 8bpp framebuffers!
This commit converts the driver to use the atomic property + the helper
function implementing the legacy hook on top of atomic.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80675
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 12 Jan 2018 09:02:05 +0000 (19:02 +1000)]
drm/nouveau/kms/nv50: use INTERPOLATE_257_UNITY_RANGE LUT on newer chipsets
For some reason forgotten by history, we've been using a 1025-entry LUT
mode, and sparsely filling it with the 256-entry LUT we're handed.
Until we land support for the full atomic colour management properties,
this commit switches to using the 257-entry mode to fix colour mapping
with depth 30 framebuffers.
Reported-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ilia Mirkin [Sun, 31 Dec 2017 04:35:28 +0000 (23:35 -0500)]
drm/nouveau/kms/nv50: use "low res" lut for indexed mode
This is what was done prior to the big refactor in kernel 3.8, and what
was done by xf86-video-nv. Experimentally, it seems like there's some
sort of issue with the high-res lut to be used there. Tested on G92.
This ends up mattering because fbcon/fbdev chooses the C8 fb format for
low-vram systems, which can occur with some IGP-based configurations
with little "stolen" vram.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80675
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 12 Jan 2018 07:10:49 +0000 (17:10 +1000)]
drm/nouveau/kms/nv50: prepare for double-buffered LUTs
We need to double-buffer LUTs to handle their update atomically.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 12 Jan 2018 07:05:03 +0000 (17:05 +1000)]
drm/nouveau/bo: add helper functions for handling pinned+mapped buffers
This is a common, awkward sequence. Let's wrap it up!
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 12 Jan 2018 07:50:37 +0000 (17:50 +1000)]
drm/nouveau/fbcon: add module parameter to select bits-per-pixel
Useful for debugging.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 12 Dec 2017 06:09:03 +0000 (16:09 +1000)]
drm/nouveau/secboot/gp108: implement on top of acr_r370
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Gourav Samaiya <gsamaiya@nvidia.com>
Ben Skeggs [Tue, 12 Dec 2017 06:08:05 +0000 (16:08 +1000)]
drm/nouveau/secboot/r370: implement support for booting LS SEC2 ucode
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Gourav Samaiya <gsamaiya@nvidia.com>
Ben Skeggs [Tue, 12 Dec 2017 05:50:10 +0000 (15:50 +1000)]
drm/nouveau/secboot/r370: move a bunch of r375 stuff to a new implementation
It's entirely possibly that the other r375 code is relevant to r370 too,
but I've not confirmed this, so I'll leave it where it is for now.
NVIDIA's copyright headers maintained, as it's still all their code.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Gourav Samaiya <gsamaiya@nvidia.com>
Arnd Bergmann [Mon, 4 Dec 2017 14:54:26 +0000 (15:54 +0100)]
drm/nouveau: nouveau: use correct string length
gcc-8 reports
drivers/gpu/drm/nouveau/nvkm/engine/pm/base.c: In function 'nvkm_perfmon_mthd':
include/linux/string.h:265:9: error: '__builtin_strncpy' specified bound 64 equals destination size [-Werror=stringop-truncation]
We need one less byte or call strlcpy() to make it a
nul-terminated string.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Christoph Böhmwalder [Thu, 30 Nov 2017 19:53:54 +0000 (20:53 +0100)]
drm/nouveau/drm/nouveau/mmu: fix odd_ptr_err.cocci warnings
The kbuild test bot complained about a new coccinelle warning nearby,
which sparked a discussion about the assignment to 'memory' inside of
the conditional expression. See Link below for the original post.
Fix the assignment to silence the coccinelle warning and also make the
code look a little nicer.
Link: https://lists.freedesktop.org/archives/nouveau/2017-November/029242.html
Signed-off-by: Christoph Böhmwalder <christoph@boehmwalder.at>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Karol Herbst [Mon, 6 Nov 2017 15:32:41 +0000 (16:32 +0100)]
drm/nouveau/pmu/fuc: don't use movw directly anymore
Fixes failure to compile with recent envyas as a result of the 'movw'
alias being removed for v5.
A bit of history:
v3 only has a 16-bit sign-extended immediate mov op. In order to set
the high bits, there's a separate 'sethi' op. envyas validates that
the value passed to mov(imm) is between -0x8000 and 0x7fff. In order
to simplify macros that load both the low and high word, a 'movw'
alias was added which takes an unsigned 16-bit immediate. However the
actual hardware op still sign extends.
v5 has a full 32-bit immediate mov op. The v3 16-bit immediate mov op
is gone (loads 0 into the dst reg). However due to a bug in envyas,
the movw alias still existed, and selected the no-longer-present v3
16-bit immediate mov op. As a result usage of movw on v5 is the same
as mov with a 0x0 argument.
The proper fix throughout is to only ever use the 'movw' alias in
combination with 'sethi'. Anything else should get the sign-extended
validation to ensure that the intended value ends up in the
destination register.
Changes in fuc3 binaries is the result of a different encoding being
selected for a mov with an 8-bit value.
v2: added commit message written by Ilia, thanks for that!
v3: messed up rebasing, now it should apply
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Daniel Vetter [Thu, 18 Jan 2018 15:40:16 +0000 (16:40 +0100)]
drm/ast: Load lut in crtc_commit
In the past the ast driver relied upon the fbdev emulation helpers to
call ->load_lut at boot-up. But since
commit
b8e2b0199cc377617dc238f5106352c06dcd3fa2
Author: Peter Rosin <peda@axentia.se>
Date: Tue Jul 4 12:36:57 2017 +0200
drm/fb-helper: factor out pseudo-palette
that's cleaned up and drivers are expected to boot into a consistent
lut state. This patch fixes that.
Fixes:
b8e2b0199cc3 ("drm/fb-helper: factor out pseudo-palette")
Cc: Peter Rosin <peda@axenita.se>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org> # v4.14+
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=198123
Cc: Bill Fraser <bill.fraser@gmail.com>
Reported-and-Tested-by: Bill Fraser <bill.fraser@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Thu, 1 Feb 2018 01:34:47 +0000 (11:34 +1000)]
Merge tag 'drm-misc-next-fixes-2018-01-31' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
This contains a fix to restrict what lessee can do with masters and
another one when waiting for timeouts on reservation objects.
* tag 'drm-misc-next-fixes-2018-01-31' of git://anongit.freedesktop.org/drm/drm-misc:
drm: Check for lessee in DROP_MASTER ioctl
dma-buf: fix reservation_object_wait_timeout_rcu once more v2
Keith Packard [Fri, 19 Jan 2018 01:51:59 +0000 (17:51 -0800)]
drm: Check for lessee in DROP_MASTER ioctl
Don't let a lessee control what the current DRM master is set to;
that's the job of the "real" master. Otherwise, the lessee would
disable all access to master operations for the owner and all lessees
under it.
This matches the same check made in the SET_MASTER ioctl.
Signed-off-by: Keith Packard <keithp@keithp.com>
Fixes:
2ed077e467ee ("drm: Add drm_object lease infrastructure [v5]")
Cc: <stable@vger.kernel.org> # v4.15+
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180119015159.1606-1-keithp@keithp.com
Dave Airlie [Thu, 25 Jan 2018 01:42:25 +0000 (11:42 +1000)]
Merge tag 'drm-misc-next-fixes-2018-01-18' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
Fixes for 4.16:
Fixes one Kconfig issue and a enable some panels to work properly.
There is also a fix of error code return in sun4i.
* tag 'drm-misc-next-fixes-2018-01-18' of git://anongit.freedesktop.org/drm/drm-misc:
drm: Fix PANEL_ORIENTATION_QUIRKS breaking the Kconfig DRM menuconfig
drm/panel: lvds: Handle the optional regulator case properly
drm/sun4i: Fix error code in sun4i_tcon_bind()
Dave Airlie [Thu, 25 Jan 2018 01:40:54 +0000 (11:40 +1000)]
Merge branch 'drm-next-4.16' of git://people.freedesktop.org/~agd5f/linux into drm-next
A few more fixes for 4.16, nothing major.
A few more fixes for 4.16. This is on top of the pull request from
last week. Most notable change here is a fix to the link order for
the now separate from amdgpu GPU scheduler to fix crashes when the
modules are build into the kernel rather than as modules.
* 'drm-next-4.16' of git://people.freedesktop.org/~agd5f/linux:
drm: fix gpu scheduler link order
drm/amd/display: Demote error print to debug print when ATOM impl missing
drm/amdgpu: Avoid leaking PM domain on driver unbind (v2)
drm/amd/amdgpu: Add Polaris version check
drm/amdgpu: Reenable manual GPU reset from sysfs
drm/amdgpu: disable MMHUB power gating on raven
drm/ttm: Don't unreserve swapped BOs that were previously reserved
drm/ttm: Don't add swapped BOs to swap-LRU list
drm/amdgpu: only check for ECC on Vega10
drm/amd/powerplay: Fix smu_table_entry.handle type
drm/ttm: add VADDR_FLAG_UPDATED_COUNT to correctly update dma_page global count
drm/radeon: fill in rb backend map on evergreen/ni.
drm/amdgpu/gfx9: fix ngg enablement to clear gds reserved memory (v2)
drm/ttm: only free pages rather than update global memory count together
drm/amdgpu: fix CPU based VM updates
drm/amdgpu: fix typo in amdgpu_vce_validate_bo
drm/amdgpu: fix amdgpu_vm_pasid_fault_credit
drm/ttm: check the return value of register_shrinker
drm/radeon: fix sparse warning: Should it be static?
Christian König [Wed, 24 Jan 2018 10:44:49 +0000 (11:44 +0100)]
drm: fix gpu scheduler link order
It should initialize before the drivers using it.
Signed-off-by: Christian König <christian.koenig@amd.com>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=104736
Reviewed-by: Mike Lothian <mike@fireburn.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Harry Wentland [Wed, 3 Jan 2018 14:58:58 +0000 (09:58 -0500)]
drm/amd/display: Demote error print to debug print when ATOM impl missing
I assumed wrongfully that all relevant functions should be implemented.
Apparently this isn't the case. Demote the print to debug level for now.
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Mon, 22 Jan 2018 20:00:03 +0000 (21:00 +0100)]
dma-buf: fix reservation_object_wait_timeout_rcu once more v2
We need to set shared_count even if we already have a fence to wait for.
v2: init i to -1 as well
Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Tested-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180122200003.6665-1-christian.koenig@amd.com
Alex Deucher [Tue, 23 Jan 2018 04:13:32 +0000 (23:13 -0500)]
drm/amdgpu: Avoid leaking PM domain on driver unbind (v2)
We only support vga_switcheroo and runtime pm on PX/HG systems
so forcing runpm to 1 doesn't do anything useful anyway.
Only call vga_switcheroo_init_domain_pm_ops() for PX/HG so
that the cleanup path is correct as well. This mirrors what
radeon does as well.
v2: rework the patch originally sent by Lukas (Alex)
Acked-by: Lukas Wunner <lukas@wunner.de>
Reported-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de> (v1)
Cc: stable@vger.kernel.org
James Zhu [Mon, 22 Jan 2018 18:46:16 +0000 (13:46 -0500)]
drm/amd/amdgpu: Add Polaris version check
Add Polaris version check if firmware support UVD encode
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: James Zhu <James.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Andrey Grodzovsky [Fri, 19 Jan 2018 22:23:08 +0000 (17:23 -0500)]
drm/amdgpu: Reenable manual GPU reset from sysfs
Otherwise it keeps rejecting the reset.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Huang Rui [Thu, 14 Dec 2017 05:47:16 +0000 (13:47 +0800)]
drm/amdgpu: disable MMHUB power gating on raven
MMHUB power gating still has issue, and doesn't work on raven at current. So
disable it for the moment.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Felix Kuehling [Thu, 18 Jan 2018 04:54:07 +0000 (23:54 -0500)]
drm/ttm: Don't unreserve swapped BOs that were previously reserved
If ttm_bo_swapout doesn't own the lock, don't release it. Someone
else probably depends on it still being locked.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Felix Kuehling [Thu, 18 Jan 2018 04:52:03 +0000 (23:52 -0500)]
drm/ttm: Don't add swapped BOs to swap-LRU list
A BO that's already swapped would be added back to the swap-LRU list
for example if its validation failed under high memory pressure. This
could later lead to swapping it out again and leaking previous swap
storage.
This commit adds a condition to prevent that from happening.
v2: Check page_flags instead of swap_storage
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Alex Deucher [Wed, 17 Jan 2018 14:07:29 +0000 (09:07 -0500)]
drm/amdgpu: only check for ECC on Vega10
RV doesn't support it.
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Andrey Grodzovsky [Wed, 17 Jan 2018 22:24:13 +0000 (17:24 -0500)]
drm/amd/powerplay: Fix smu_table_entry.handle type
The handle describes kernel logical address, should be
unsigned long and not uint32_t.
Fixes KASAN error and GFP on driver unload.
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Roger He [Mon, 15 Jan 2018 05:06:38 +0000 (13:06 +0800)]
drm/ttm: add VADDR_FLAG_UPDATED_COUNT to correctly update dma_page global count
add this for correctly updating global mem count in ttm_mem_zone.
before that when ttm_mem_global_alloc_page fails, we would update all
dma_page's global mem count in ttm_dma->pages_list. but actually here
we should not update for the last dma_page.
v2: only the update of last dma_page is not right
v3: use lower bits of dma_page vaddr
Signed-off-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Dave Airlie [Thu, 18 Jan 2018 03:30:48 +0000 (13:30 +1000)]
Merge tag 'drm-amdkfd-next-fixes-2018-01-15' of git://people.freedesktop.org/~gabbayo/linux into drm-next
- fix NULL pointer dereference
- fix compiler warning on large define values
- remove unnecessary call to execute_queues_cpsch
* tag 'drm-amdkfd-next-fixes-2018-01-15' of git://people.freedesktop.org/~gabbayo/linux:
drm/amdkfd: Fix potential NULL pointer dereferences
drm/amdkfd: add ull suffix to 64bit defines
drm/amdkfd: don't always call execute_queues_cpsch()
drm/amdkfd: Fix return value 0 when execute_queues_cpsch fails
Dave Airlie [Wed, 17 Jan 2018 23:32:15 +0000 (09:32 +1000)]
BackMerge tag 'v4.15-rc8' into drm-next
Linux 4.15-rc8
Daniel requested this for so the intel CI won't fall over on drm-next
so often.
Hans de Goede [Wed, 17 Jan 2018 08:10:32 +0000 (09:10 +0100)]
drm: Fix PANEL_ORIENTATION_QUIRKS breaking the Kconfig DRM menuconfig
All Kconfig menu menu entries should have a depends on MENU_OPTION, the
menu stops after the first Kconfig entry without this depends on.
Since the PANEL_ORIENTATION_QUIRKS option is also used outside of DRM,
it deliberately does not have a depends on DRM, but this causes all
items after it to show as separate items rather then under the DRM
menuconfig.
This commit moves PANEL_ORIENTATION_QUIRKS to the end of the drm Kconfig
file, grouping it with DRM_LIB_RANDOM which also does not depend on DRM,
fixing the DRM menuconfig.
Fixes:
404d1a3edc38 ("drm: Add panel orientation quirks, v6.")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180117081032.6411-1-hdegoede@redhat.com
Dave Airlie [Tue, 9 Jan 2018 03:43:03 +0000 (13:43 +1000)]
drm/radeon: fill in rb backend map on evergreen/ni.
This looks to have never gotten filled in, and it seems to
trigger a bug in mesa.
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reported-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Junwei Zhang [Wed, 10 Jan 2018 05:45:19 +0000 (13:45 +0800)]
drm/amdgpu/gfx9: fix ngg enablement to clear gds reserved memory (v2)
v2: fix register access
Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Ken Wang <ken.wang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Roger He [Thu, 11 Jan 2018 09:00:14 +0000 (17:00 +0800)]
drm/ttm: only free pages rather than update global memory count together
if ttm_get_pages or ttm_mem_global_alloc_page fail, should not update
global memory count.
Signed-off-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Tested-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Tue, 16 Jan 2018 14:35:10 +0000 (15:35 +0100)]
drm/amdgpu: fix CPU based VM updates
That got accidentially removed.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Tue, 16 Jan 2018 10:00:12 +0000 (11:00 +0100)]
drm/amdgpu: fix typo in amdgpu_vce_validate_bo
Otherwise buffer placement is very restrictive and might fail.
Fixes: "drm/amdgpu: fix VCE buffer placement restrictions v2"
Signed-off-by: Christian König <christian.koenig@amd.com>
Reported-by: Deng, Emily <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Christian König [Tue, 9 Jan 2018 18:18:59 +0000 (19:18 +0100)]
drm/amdgpu: fix amdgpu_vm_pasid_fault_credit
As soon as the lock is dropped the VM pointer can be invalid.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Roger He [Thu, 11 Jan 2018 04:57:58 +0000 (12:57 +0800)]
drm/ttm: check the return value of register_shrinker
This fixes the build warning:
"ignoring return value of 'register_shrinker', declared with
attribute warn_unused_result [-Wunused-result]"
Signed-off-by: Roger He <Hongbo.He@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Dmitry Rozhkov [Tue, 2 Jan 2018 08:02:51 +0000 (10:02 +0200)]
drm/radeon: fix sparse warning: Should it be static?
Impact: make symbol static.
Fix this sparse warning:
drivers/gpu/drm/radeon/radeon_dp_mst.c:332:38: warning: symbol 'mst_cbs' was not declared. Should it be static?
Signed-off-by: Dmitry Rozhkov <dmitry.rozhkov@linux.intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Maxime Ripard [Wed, 10 Jan 2018 15:59:41 +0000 (16:59 +0100)]
drm/panel: lvds: Handle the optional regulator case properly
The devm_regulator_get_optional function, unlike it was assumed in the
commit
a1c55bccf600 ("drm/panel: lvds: Add support for the power-supply
property"), is actually returning an error pointer with -ENODEV instead of
NULL when there's no regulator to find.
Make sure we handle that case properly.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Fixes:
a1c55bccf600 ("drm/panel: lvds: Add support for the power-supply property")
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180110155941.16109-1-maxime.ripard@free-electrons.com
Dan Carpenter [Mon, 15 Jan 2018 08:11:13 +0000 (11:11 +0300)]
drm/sun4i: Fix error code in sun4i_tcon_bind()
We accidentally passed the wrong variable to PTR_ERR().
Fixes:
a0c1214e4764 ("drm/sun4i: Add LVDS support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180115081113.wlam5wkmdynisf4r@mwanda
Linus Torvalds [Sun, 14 Jan 2018 23:32:30 +0000 (15:32 -0800)]
Linux 4.15-rc8
Linus Torvalds [Sun, 14 Jan 2018 23:30:02 +0000 (15:30 -0800)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixlet from Thomas Gleixner.
Remove a warning about lack of compiler support for retpoline that most
people can't do anything about, so it just annoys them needlessly.
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/retpoline: Remove compile time warning
Linus Torvalds [Sun, 14 Jan 2018 23:03:17 +0000 (15:03 -0800)]
Merge tag 'powerpc-4.15-7' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"One fix for an oops at boot if we take a hotplug interrupt before we
are ready to handle it.
The bulk is patches to implement mitigation for Meltdown, see the
change logs for more details.
Thanks to: Nicholas Piggin, Michael Neuling, Oliver O'Halloran, Jon
Masters, Jose Ricardo Ziviani, David Gibson"
* tag 'powerpc-4.15-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/powernv: Check device-tree for RFI flush settings
powerpc/pseries: Query hypervisor for RFI flush settings
powerpc/64s: Support disabling RFI flush with no_rfi_flush and nopti
powerpc/64s: Add support for RFI flush of L1-D cache
powerpc/64s: Convert slb_miss_common to use RFI_TO_USER/KERNEL
powerpc/64: Convert fast_exception_return to use RFI_TO_USER/KERNEL
powerpc/64: Convert the syscall exit path to use RFI_TO_USER/KERNEL
powerpc/64s: Simple RFI macro conversions
powerpc/64: Add macros for annotating the destination of rfid/hrfid
powerpc/pseries: Add H_GET_CPU_CHARACTERISTICS flags & wrapper
powerpc/pseries: Make RAS IRQ explicitly dependent on DLPAR WQ
Thomas Gleixner [Sun, 14 Jan 2018 21:13:29 +0000 (22:13 +0100)]
x86/retpoline: Remove compile time warning
Remove the compile time warning when CONFIG_RETPOLINE=y and the compiler
does not have retpoline support. Linus rationale for this is:
It's wrong because it will just make people turn off RETPOLINE, and the
asm updates - and return stack clearing - that are independent of the
compiler are likely the most important parts because they are likely the
ones easiest to target.
And it's annoying because most people won't be able to do anything about
it. The number of people building their own compiler? Very small. So if
their distro hasn't got a compiler yet (and pretty much nobody does), the
warning is just annoying crap.
It is already properly reported as part of the sysfs interface. The
compile-time warning only encourages bad things.
Fixes:
76b043848fd2 ("x86/retpoline: Add initial retpoline support")
Requested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Link: https://lkml.kernel.org/r/CA+55aFzWgquv4i6Mab6bASqYXg3ErV3XDFEYf=GEcCDQg5uAtw@mail.gmail.com
Linus Torvalds [Sun, 14 Jan 2018 18:22:45 +0000 (10:22 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull NVMe fix from Jens Axboe:
"Just a single fix for nvme over fabrics that should go into 4.15"
* 'for-linus' of git://git.kernel.dk/linux-block:
nvme-fabrics: initialize default host->id in nvmf_host_default()
Linus Torvalds [Sun, 14 Jan 2018 17:51:25 +0000 (09:51 -0800)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 pti updates from Thomas Gleixner:
"This contains:
- a PTI bugfix to avoid setting reserved CR3 bits when PCID is
disabled. This seems to cause issues on a virtual machine at least
and is incorrect according to the AMD manual.
- a PTI bugfix which disables the perf BTS facility if PTI is
enabled. The BTS AUX buffer is not globally visible and causes the
CPU to fault when the mapping disappears on switching CR3 to user
space. A full fix which restores BTS on PTI is non trivial and will
be worked on.
- PTI bugfixes for EFI and trusted boot which make sure that the user
space visible page table entries have the NX bit cleared
- removal of dead code in the PTI pagetable setup functions
- add PTI documentation
- add a selftest for vsyscall to verify that the kernel actually
implements what it advertises.
- a sysfs interface to expose vulnerability and mitigation
information so there is a coherent way for users to retrieve the
status.
- the initial spectre_v2 mitigations, aka retpoline:
+ The necessary ASM thunk and compiler support
+ The ASM variants of retpoline and the conversion of affected ASM
code
+ Make LFENCE serializing on AMD so it can be used as speculation
trap
+ The RSB fill after vmexit
- initial objtool support for retpoline
As I said in the status mail this is the most of the set of patches
which should go into 4.15 except two straight forward patches still on
hold:
- the retpoline add on of LFENCE which waits for ACKs
- the RSB fill after context switch
Both should be ready to go early next week and with that we'll have
covered the major holes of spectre_v2 and go back to normality"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
x86,perf: Disable intel_bts when PTI
security/Kconfig: Correct the Documentation reference for PTI
x86/pti: Fix !PCID and sanitize defines
selftests/x86: Add test_vsyscall
x86/retpoline: Fill return stack buffer on vmexit
x86/retpoline/irq32: Convert assembler indirect jumps
x86/retpoline/checksum32: Convert assembler indirect jumps
x86/retpoline/xen: Convert Xen hypercall indirect jumps
x86/retpoline/hyperv: Convert assembler indirect jumps
x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
x86/retpoline/entry: Convert entry assembler indirect jumps
x86/retpoline/crypto: Convert crypto assembler indirect jumps
x86/spectre: Add boot time option to select Spectre v2 mitigation
x86/retpoline: Add initial retpoline support
objtool: Allow alternatives to be ignored
objtool: Detect jumps to retpoline thunks
x86/pti: Make unpoison of pgd for trusted boot work for real
x86/alternatives: Fix optimize_nops() checking
sysfs/cpu: Fix typos in vulnerability documentation
x86/cpu/AMD: Use LFENCE_RDTSC in preference to MFENCE_RDTSC
...
Peter Zijlstra [Sun, 14 Jan 2018 10:27:13 +0000 (11:27 +0100)]
x86,perf: Disable intel_bts when PTI
The intel_bts driver does not use the 'normal' BTS buffer which is exposed
through the cpu_entry_area but instead uses the memory allocated for the
perf AUX buffer.
This obviously comes apart when using PTI because then the kernel mapping;
which includes that AUX buffer memory; disappears. Fixing this requires to
expose a mapping which is visible in all context and that's not trivial.
As a quick fix disable this driver when PTI is enabled to prevent
malfunction.
Fixes:
385ce0ea4c07 ("x86/mm/pti: Add Kconfig")
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Reported-by: Robert Święcki <robert@swiecki.net>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: greg@kroah.com
Cc: hughd@google.com
Cc: luto@amacapital.net
Cc: Vince Weaver <vince@deater.net>
Cc: torvalds@linux-foundation.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180114102713.GB6166@worktop.programming.kicks-ass.net
W. Trevor King [Fri, 12 Jan 2018 23:24:59 +0000 (15:24 -0800)]
security/Kconfig: Correct the Documentation reference for PTI
When the config option for PTI was added a reference to documentation was
added as well. But the documentation did not exist at that point. The final
documentation has a different file name.
Fix it up to point to the proper file.
Fixes:
385ce0ea ("x86/mm/pti: Add Kconfig")
Signed-off-by: W. Trevor King <wking@tremily.us>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: linux-mm@kvack.org
Cc: linux-security-module@vger.kernel.org
Cc: James Morris <james.l.morris@oracle.com>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/3009cc8ccbddcd897ec1e0cb6dda524929de0d14.1515799398.git.wking@tremily.us
Thomas Gleixner [Sat, 13 Jan 2018 23:23:57 +0000 (00:23 +0100)]
x86/pti: Fix !PCID and sanitize defines
The switch to the user space page tables in the low level ASM code sets
unconditionally bit 12 and bit 11 of CR3. Bit 12 is switching the base
address of the page directory to the user part, bit 11 is switching the
PCID to the PCID associated with the user page tables.
This fails on a machine which lacks PCID support because bit 11 is set in
CR3. Bit 11 is reserved when PCID is inactive.
While the Intel SDM claims that the reserved bits are ignored when PCID is
disabled, the AMD APM states that they should be cleared.
This went unnoticed as the AMD APM was not checked when the code was
developed and reviewed and test systems with Intel CPUs never failed to
boot. The report is against a Centos 6 host where the guest fails to boot,
so it's not yet clear whether this is a virt issue or can happen on real
hardware too, but thats irrelevant as the AMD APM clearly ask for clearing
the reserved bits.
Make sure that on non PCID machines bit 11 is not set by the page table
switching code.
Andy suggested to rename the related bits and masks so they are clearly
describing what they should be used for, which is done as well for clarity.
That split could have been done with alternatives but the macro hell is
horrible and ugly. This can be done on top if someone cares to remove the
extra orq. For now it's a straight forward fix.
Fixes:
6fd166aae78c ("x86/mm: Use/Fix PCID to optimize user/kernel switches")
Reported-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable <stable@vger.kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Willy Tarreau <w@1wt.eu>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801140009150.2371@nanos
Linus Torvalds [Sat, 13 Jan 2018 22:10:32 +0000 (14:10 -0800)]
Merge tag 'usb-4.15-rc8' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB fixes and device ids for 4.15-rc8
Nothing major, small fixes for various devices, some resolutions for
bugs found by fuzzers, and the usual handful of new device ids.
All of these have been in linux-next with no reported issues"
* tag 'usb-4.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
Documentation: usb: fix typo in UVC gadgetfs config command
usb: misc: usb3503: make sure reset is low for at least 100us
uas: ignore UAS for Norelsys NS1068(X) chips
USB: UDC core: fix double-free in usb_add_gadget_udc_release
USB: fix usbmon BUG trigger
usbip: vudc_tx: fix v_send_ret_submit() vulnerability to null xfer buffer
usbip: remove kernel addresses from usb device and urb debug msgs
usbip: fix vudc_rx: harden CMD_SUBMIT path to handle malicious input
USB: serial: cp210x: add new device ID ELV ALC 8xxx
USB: serial: cp210x: add IDs for LifeScan OneTouch Verio IQ
Linus Torvalds [Sat, 13 Jan 2018 22:04:06 +0000 (14:04 -0800)]
Merge tag 'staging-4.15-rc8' of git://git./linux/kernel/git/gregkh/staging
Pull staging driver fix from Greg KH:
"Here is a single android ashmem bugfix that resolves a reported issue
in that interface. It's been in linux-next this week with no reported
issues"
* tag 'staging-4.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: android: ashmem: fix a race condition in ASHMEM_SET_SIZE ioctl
Linus Torvalds [Sat, 13 Jan 2018 22:01:59 +0000 (14:01 -0800)]
Merge tag 'char-misc-4.15-rc8' of git://git./linux/kernel/git/gregkh/char-misc
Pull char/misc fixes from Greg KH:
"Here are two bugfixes for some driver bugs for 4.15-rc8
The first is a bluetooth security bug that has been ignored by the
Bluetooth developers for months for no obvious reason at all, so I've
taken it through my tree.
The second is a simple double-free bug in the mux subsystem.
Both have been in linux-next for a while with no reported issues"
* tag 'char-misc-4.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mux: core: fix double get_device()
Bluetooth: Prevent stack info leak from the EFS element.
Linus Torvalds [Sat, 13 Jan 2018 21:24:56 +0000 (13:24 -0800)]
Merge tag 'kbuild-fixes-v4.15' of git://git./linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- fix cross-compilation for architectures that setup CROSS_COMPILE in
their arch Makefile
- fix Kconfig rational operators for bool / tristate
- drop a gperf-generated file from .gitignore
* tag 'kbuild-fixes-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
genksyms: drop *.hash.c from .gitignore
kconfig: fix relational operators for bool and tristate symbols
kbuild: move cc-option and cc-disable-warning after incl. arch Makefile
Linus Torvalds [Sat, 13 Jan 2018 21:18:15 +0000 (13:18 -0800)]
Merge tag 'apparmor-pr-2018-01-12' of git://git./linux/kernel/git/jj/linux-apparmor
Pull apparmor regression fixes from John Johansen:
"This fixes a couple bugs I have been working with Matthew Garrett on
this week. Specifically a regression in the handling of a conflicting
profile attachment and label match restrictions for ptrace when
profiles are stacked.
Summary:
- fix ptrace label match when matching stacked labels
- fix regression in profile conflict logic"
* tag 'apparmor-pr-2018-01-12' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor:
apparmor: Fix regression in profile conflict logic
apparmor: fix ptrace label match when matching stacked labels
Linus Torvalds [Sat, 13 Jan 2018 21:14:54 +0000 (13:14 -0800)]
Merge tag 'pci-v4.15-fixes-2' of git://git./linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"Fix AMD boot regression due to 64-bit window conflicting with system
memory (Christian König)"
* tag 'pci-v4.15-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
x86/PCI: Move and shrink AMD 64-bit window to avoid conflict
x86/PCI: Add "pci=big_root_window" option for AMD 64-bit windows
Linus Torvalds [Sat, 13 Jan 2018 19:07:55 +0000 (11:07 -0800)]
Merge branch 'akpm' (patches from Andrew)
Merge misc fixlets from Andrew Morton:
"4 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
tools/objtool/Makefile: don't assume sync-check.sh is executable
kdump: write correct address of mem_section into vmcoreinfo
kmemleak: allow to coexist with fault injection
MAINTAINERS, nilfs2: change project home URLs
Andrew Morton [Sat, 13 Jan 2018 00:53:17 +0000 (16:53 -0800)]
tools/objtool/Makefile: don't assume sync-check.sh is executable
patch(1) loses the x bit. So if a user follows our patching
instructions in Documentation/admin-guide/README.rst, their kernel will
not compile.
Fixes:
3bd51c5a371de ("objtool: Move kernel headers/code sync check to a script")
Reported-by: Nicolas Bock <nicolasbock@gentoo.org>
Reported-by Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kirill A. Shutemov [Sat, 13 Jan 2018 00:53:14 +0000 (16:53 -0800)]
kdump: write correct address of mem_section into vmcoreinfo
Depending on configuration mem_section can now be an array or a pointer
to an array allocated dynamically. In most cases, we can continue to
refer to it as 'mem_section' regardless of what it is.
But there's one exception: '&mem_section' means "address of the array"
if mem_section is an array, but if mem_section is a pointer, it would
mean "address of the pointer".
We've stepped onto this in kdump code. VMCOREINFO_SYMBOL(mem_section)
writes down address of pointer into vmcoreinfo, not array as we wanted.
Let's introduce VMCOREINFO_SYMBOL_ARRAY() that would handle the
situation correctly for both cases.
Link: http://lkml.kernel.org/r/20180112162532.35896-1-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Fixes:
83e3c48729d9 ("mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y")
Acked-by: Baoquan He <bhe@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dmitry Vyukov [Sat, 13 Jan 2018 00:53:10 +0000 (16:53 -0800)]
kmemleak: allow to coexist with fault injection
kmemleak does one slab allocation per user allocation. So if slab fault
injection is enabled to any degree, kmemleak instantly fails to allocate
and turns itself off. However, it's useful to use kmemleak with fault
injection to find leaks on error paths. On the other hand, checking
kmemleak itself is not so useful because (1) it's a debugging tool and
(2) it has a very regular allocation pattern (basically a single
allocation site, so it either works or not).
Turn off fault injection for kmemleak allocations.
Link: http://lkml.kernel.org/r/20180109192243.19316-1-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ryusuke Konishi [Sat, 13 Jan 2018 00:53:07 +0000 (16:53 -0800)]
MAINTAINERS, nilfs2: change project home URLs
The domain of NILFS project home was changed to "nilfs.sourceforge.io"
to enable https access (the previous domain "nilfs.sourceforge.net" is
redirected to the new one). Modify URLs of the project home to reflect
this change and to replace their protocol from http to https.
Link: http://lkml.kernel.org/r/1515416141-5614-1-git-send-email-konishi.ryusuke@lab.ntt.co.jp
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Masahiro Yamada [Thu, 11 Jan 2018 09:28:08 +0000 (18:28 +0900)]
genksyms: drop *.hash.c from .gitignore
This is a left-over of commit
bb3290d91695 ("Remove gperf usage from
toolchain").
We do not generate a hash function any more.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Andy Lutomirski [Fri, 12 Jan 2018 01:16:51 +0000 (17:16 -0800)]
selftests/x86: Add test_vsyscall
This tests that the vsyscall entries do what they're expected to do.
It also confirms that attempts to read the vsyscall page behave as
expected.
If changes are made to the vsyscall code or its memory map handling,
running this test in all three of vsyscall=none, vsyscall=emulate,
and vsyscall=native are helpful.
(Because it's easy, this also compares the vsyscall results to their
vDSO equivalents.)
Note to KAISER backporters: please test this under all three
vsyscall modes. Also, in the emulate and native modes, make sure
that test_vsyscall_64 agrees with the command line or config
option as to which mode you're in. It's quite easy to mess up
the kernel such that native mode accidentally emulates
or vice versa.
Greg, etc: please backport this to all your Meltdown-patched
kernels. It'll help make sure the patches didn't regress
vsyscalls.
CSigned-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/2b9c5a174c1d60fd7774461d518aa75598b1d8fd.1515719552.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Matthew Garrett [Thu, 11 Jan 2018 21:07:54 +0000 (13:07 -0800)]
apparmor: Fix regression in profile conflict logic
The intended behaviour in apparmor profile matching is to flag a
conflict if two profiles match equally well. However, right now a
conflict is generated if another profile has the same match length even
if that profile doesn't actually match. Fix the logic so we only
generate a conflict if the profiles match.
Fixes:
844b8292b631 ("apparmor: ensure that undecidable profile attachments fail")
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Matthew Garrett <mjg59@google.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
John Johansen [Sat, 9 Dec 2017 01:43:18 +0000 (17:43 -0800)]
apparmor: fix ptrace label match when matching stacked labels
Given a label with a profile stack of
A//&B or A//&C ...
A ptrace rule should be able to specify a generic trace pattern with
a rule like
ptrace trace A//&**,
however this is failing because while the correct label match routine
is called, it is being done post label decomposition so it is always
being done against a profile instead of the stacked label.
To fix this refactor the cross check to pass the full peer label in to
the label_match.
Fixes:
290f458a4f16 ("apparmor: allow ptrace checks to be finer grained than just capability")
Cc: Stable <stable@vger.kernel.org>
Reported-by: Matthew Garrett <mjg59@google.com>
Tested-by: Matthew Garrett <mjg59@google.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Linus Torvalds [Fri, 12 Jan 2018 18:32:11 +0000 (10:32 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Two pending (non-PTI) x86 fixes:
- an Intel-MID crash fix
- and an Intel microcode loader blacklist quirk to avoid a
problematic revision"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/platform/intel-mid: Revert "Make 'bt_sfi_data' const"
x86/microcode/intel: Extend BDW late-loading with a revision check
Linus Torvalds [Fri, 12 Jan 2018 18:23:59 +0000 (10:23 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"A Kconfig fix, a build fix and a membarrier bug fix"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
membarrier: Disable preemption when calling smp_call_function_many()
sched/isolation: Make CONFIG_CPU_ISOLATION=y depend on SMP or COMPILE_TEST
ia64, sched/cputime: Fix build error if CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y
Linus Torvalds [Fri, 12 Jan 2018 18:14:09 +0000 (10:14 -0800)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar:
"No functional effects intended: removes leftovers from recent lockdep
and refcounts work"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/refcounts: Remove stale comment from the ARCH_HAS_REFCOUNT Kconfig entry
locking/lockdep: Remove cross-release leftovers
locking/Documentation: Remove stale crossrelease_fullstack parameter
Linus Torvalds [Fri, 12 Jan 2018 18:00:15 +0000 (10:00 -0800)]
Merge tag 'for-linus-4.15-rc8-tag' of git://git./linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"This contains two build fixes for clang and two fixes for rather
unlikely situations in the Xen gntdev driver"
* tag 'for-linus-4.15-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/gntdev: Fix partial gntdev_mmap() cleanup
xen/gntdev: Fix off-by-one error when unmapping with holes
x86: xen: remove the use of VLAIS
x86/xen/time: fix section mismatch for xen_init_time_ops()
Linus Torvalds [Fri, 12 Jan 2018 17:56:52 +0000 (09:56 -0800)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"PPC:
- user-triggerable use-after-free in HPT resizing
- stale TLB entries in the guest
- trap-and-emulate (PR) KVM guests failing to start under pHyp
x86:
- Another "Spectre" fix.
- async pagefault fix
- Revert an old fix for x86 nested virtualization, which turned out
to do more harm than good
- Check shrinker registration return code, to avoid warnings from
upcoming 4.16 -mm patches"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: Add memory barrier on vmcs field lookup
KVM: x86: emulate #UD while in guest mode
x86: kvm: propagate register_shrinker return code
KVM MMU: check pending exception before injecting APF
KVM: PPC: Book3S HV: Always flush TLB in kvmppc_alloc_reset_hpt()
KVM: PPC: Book3S PR: Fix WIMG handling under pHyp
KVM: PPC: Book3S HV: Fix use after free in case of multiple resize requests
KVM: PPC: Book3S HV: Drop prepare_done from struct kvm_resize_hpt
Linus Torvalds [Fri, 12 Jan 2018 17:47:58 +0000 (09:47 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
"This fixes a NULL pointer dereference in crypto_remove_spawns that can
be triggered through af_alg"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: algapi - fix NULL dereference in crypto_remove_spawns()
Jens Axboe [Fri, 12 Jan 2018 17:42:36 +0000 (10:42 -0700)]
Merge branch 'nvme-4.15' of git://git.infradead.org/nvme into for-linus
Pull a single NVMe fix from Christoph for 4.15.
Linus Torvalds [Fri, 12 Jan 2018 17:34:20 +0000 (09:34 -0800)]
Merge tag 'mmc-v4.15-rc2-2' of git://git./linux/kernel/git/ulfh/mmc
Pull MMC host fixes from Ulf Hansson:
- s3mci: mark debug_regs[] as static
- renesas_sdhi: Add MODULE_LICENSE
* tag 'mmc-v4.15-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: s3mci: mark debug_regs[] as static
mmc: renesas_sdhi: Add MODULE_LICENSE
Linus Torvalds [Fri, 12 Jan 2018 17:28:28 +0000 (09:28 -0800)]
Merge tag 'drm-fixes-for-v4.15-rc8' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
- Nouveau: regression fix
- Tegra: regression fix
- vmwgfx: crasher + freed data leak
- i915: KASAN use after free fix, whitelist register to avoid hang fix,
GVT fixes
- vc4: irq/pm fix
* tag 'drm-fixes-for-v4.15-rc8' of git://people.freedesktop.org/~airlied/linux:
drm/i915: Don't adjust priority on an already signaled fence
drm/i915: Whitelist SLICE_COMMON_ECO_CHICKEN1 on Geminilake.
drm/vmwgfx: Potential off by one in vmw_view_add()
drm/tegra: sor: Fix hang on Tegra124 eDP
drm/vmwgfx: Don't cache framebuffer maps
drm/nouveau/disp/gf119: add missing drive vfunc ptr
drm/i915/gvt: Fix stack-out-of-bounds bug in cmd parser
drm/i915/gvt: Clear the shadow page table entry after post-sync
drm/vc4: Move IRQ enable to PM path
David Woodhouse [Fri, 12 Jan 2018 11:11:27 +0000 (11:11 +0000)]
x86/retpoline: Fill return stack buffer on vmexit
In accordance with the Intel and AMD documentation, we need to overwrite
all entries in the RSB on exiting a guest, to prevent malicious branch
target predictions from affecting the host kernel. This is needed both
for retpoline and for IBRS.
[ak: numbers again for the RSB stuffing labels]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Link: https://lkml.kernel.org/r/1515755487-8524-1-git-send-email-dwmw@amazon.co.uk
Dave Airlie [Fri, 12 Jan 2018 02:16:58 +0000 (12:16 +1000)]
Merge branch 'drm-next-4.16' of git://people.freedesktop.org/~agd5f/linux into drm-next
A few fixes for 4.16:
- Cleanup the the remains of ttm io_mem_pfn
- A couple dpm quirks for SI
- Add Chunming as another amdgpu maintainer
- A few more huge page fixes
- A few other misc fixes
* 'drm-next-4.16' of git://people.freedesktop.org/~agd5f/linux:
drm/amd/pp: Implement get_max_high_clocks for CI/VI
MAINTAINERS: add David (Chunming) Zhou as additional amdgpu maintainer
drm/amdgpu: fix 64bit BAR detection
drm/amdgpu: optimize moved handling only when vm_debug is inactive
drm/amdgpu: simplify huge page handling
drm/amdgpu: update VM PDs after the PTs
drm/amdgpu: minor optimize VM moved handling v2
drm/amdgpu: loosen the criteria for huge pages a bit
drm/amd/powerplay: set pp_num_states as 0 on error situation
drm/ttm: specify DMA_ATTR_NO_WARN for huge page pools
drm/ttm: remove ttm_bo_default_io_mem_pfn
staging: remove the default io_mem_pfn set
drm/amd/powerplay: fix memory leakage when reload (v2)
drm/amdgpu/gfx9: only init the apertures used by KGD (v2)
drm/amdgpu: add atpx quirk handling (v2)
drm/amdgpu: Add dpm quirk for Jet PRO (v2)
drm/radeon: Add dpm quirk for Jet PRO (v2)
Dave Airlie [Fri, 12 Jan 2018 01:48:06 +0000 (11:48 +1000)]
Merge tag 'drm-intel-fixes-2018-01-11-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
Hopefully final drm/i915 fixes for v4.15:
- Fix a KASAN reported use after free
- Whitelist a register to avoid hangs
- GVT fixes
* tag 'drm-intel-fixes-2018-01-11-1' of git://anongit.freedesktop.org/drm/drm-intel:
drm/i915: Don't adjust priority on an already signaled fence
drm/i915: Whitelist SLICE_COMMON_ECO_CHICKEN1 on Geminilake.
drm/i915/gvt: Fix stack-out-of-bounds bug in cmd parser
drm/i915/gvt: Clear the shadow page table entry after post-sync
Dave Airlie [Fri, 12 Jan 2018 01:47:40 +0000 (11:47 +1000)]
Merge branch 'vmwgfx-fixes-4.15' of git://people.freedesktop.org/~thomash/linux into drm-fixes
Two important fixes for vmwgfx.
The off-by-one fix could cause a malicious user to potentially crash the
kernel.
The framebuffer map cache fix can under some circumstances enable a user to
read from or write to freed pages.
* 'vmwgfx-fixes-4.15' of git://people.freedesktop.org/~thomash/linux:
drm/vmwgfx: Potential off by one in vmw_view_add()
drm/vmwgfx: Don't cache framebuffer maps
Dave Airlie [Fri, 12 Jan 2018 01:47:11 +0000 (11:47 +1000)]
Merge tag 'drm/tegra/for-4.15-rc8' of git://anongit.freedesktop.org/tegra/linux into drm-fixes
drm/tegra: Fixes for v4.15-rc8
A single fix for a Tegra124 eDP regression introduced by the SOR changes
in v4.15-rc1.
* tag 'drm/tegra/for-4.15-rc8' of git://anongit.freedesktop.org/tegra/linux:
drm/tegra: sor: Fix hang on Tegra124 eDP
Dave Airlie [Fri, 12 Jan 2018 01:46:19 +0000 (11:46 +1000)]
Merge tag 'drm/tegra/for-4.16-rc1-fixes' of git://anongit.freedesktop.org/tegra/linux into drm-next
drm/tegra: Changes for v4.16-rc1
The bulk of these changes are preparation work and addition of support
for Tegra186. Currently only HDMI output (the primary output on Jetson
TX2) is supported, but the hardware is also capable of doing DSI and
DisplayPort.
Tegra DRM now also uses the atomic commit helpers instead of the open-
coded variant that was only doing half its job. As a bit of a byproduct
of the Tegra186 support the driver also gained HDMI 2.0 as well as zpos
property support.
Along the way there are also a few patches to clean up a few things and
fix minor issues.
* tag 'drm/tegra/for-4.16-rc1-fixes' of git://anongit.freedesktop.org/tegra/linux: (51 commits)
drm/tegra: dc: Properly cleanup overlay planes
drm/tegra: dc: Fix possible_crtcs mask for planes
drm/tegra: dc: Restore YUV overlay support
drm/tegra: dc: Implement legacy blending
drm/tegra: Correct timeout in tegra_syncpt_wait
drm/tegra: gem: Correct iommu_map_sg() error checking
drm/tegra: dc: Link DC1 to DC0 on Tegra20
drm/tegra: Fix non-debugfs builds
drm/tegra: dpaux: Keep reset defaults for hybrid pad parameters
drm/tegra: Mark Tegra186 display hub PM functions __maybe_unused
drm/tegra: Use IOMMU groups
gpu: host1x: Use IOMMU groups
drm/tegra: Implement zpos property
drm/tegra: dc: Remove redundant spinlock
drm/tegra: dc: Use direct offset to plane registers
drm/tegra: dc: Support more formats
drm/tegra: fb: Force alpha formats
drm/tegra: dpaux: Add Tegra186 support
drm/tegra: dpaux: Implement runtime PM
drm/tegra: sor: Support HDMI 2.0 modes
...
Dave Airlie [Fri, 12 Jan 2018 01:45:18 +0000 (11:45 +1000)]
Merge tag 'drm-msm-next-2018-01-10' of git://people.freedesktop.org/~robclark/linux into drm-next
Updates for 4.16.. fairly small this time around, main thing is
devfreq support for the gpu.
* tag 'drm-msm-next-2018-01-10' of git://people.freedesktop.org/~robclark/linux:
drm/msm: Add devfreq support for the GPU
drm/msm/adreno: a5xx: Explicitly program the CP0 performance counter
drm/msm/adreno: Read the speed bins for a5xx targets
drm/msm/adreno: Move clock parsing to adreno_gpu_init()
drm/msm/adreno: Cleanup chipid parsing
drm/msm/gpu: Remove unused bus scaling code
drm/msm/adreno: Remove a useless call to dev_pm_opp_get_freq()
drm/msm/adreno: Call dev_pm_opp_put()
drm/msm: Fix NULL deref in adreno_load_gpu
drm/msm: gpu: Only sync fences on rings that exist
drm/msm: fix leak in failed get_pages
drm/msm: avoid false-positive -Wmaybe-uninitialized warning
drm/msm/mdp4: Deduplicate bus_find_device() by name matching
drm/msm: add missing MODULE_FIRMWARE declarations
drm/msm: update adreno firmware path in MODULE_FIRMWARE
drm/msm: free kstrdup'd cmdline
drm/msm: fix msm_rd_dump_submit prototype
drm/msm: fix spelling mistake: "ringubffer" -> "ringbuffer"
Linus Torvalds [Fri, 12 Jan 2018 00:57:32 +0000 (16:57 -0800)]
Merge tag 'ceph-for-4.15-rc8' of git://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"Two rbd fixes for 4.12 and 4.2 issues respectively, marked for
stable"
* tag 'ceph-for-4.15-rc8' of git://github.com/ceph/ceph-client:
rbd: set max_segments to USHRT_MAX
rbd: reacquire lock should update lock owner client id
Linus Torvalds [Fri, 12 Jan 2018 00:54:35 +0000 (16:54 -0800)]
Merge tag 'gpio-v4.15-4' of git://git./linux/kernel/git/linusw/linux-gpio
Pull GPIO fix from Linus Walleij:
"Fix a raw vs elaborate GPIO descriptor bug introduced by yours truly"
* tag 'gpio-v4.15-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: Add missing open drain/source handling to gpiod_set_value_cansleep()
Andi Kleen [Thu, 11 Jan 2018 21:46:33 +0000 (21:46 +0000)]
x86/retpoline/irq32: Convert assembler indirect jumps
Convert all indirect jumps in 32bit irq inline asm code to use non
speculative sequences.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Link: https://lkml.kernel.org/r/1515707194-20531-12-git-send-email-dwmw@amazon.co.uk
David Woodhouse [Thu, 11 Jan 2018 21:46:32 +0000 (21:46 +0000)]
x86/retpoline/checksum32: Convert assembler indirect jumps
Convert all indirect jumps in 32bit checksum assembler code to use
non-speculative sequences when CONFIG_RETPOLINE is enabled.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Link: https://lkml.kernel.org/r/1515707194-20531-11-git-send-email-dwmw@amazon.co.uk
David Woodhouse [Thu, 11 Jan 2018 21:46:31 +0000 (21:46 +0000)]
x86/retpoline/xen: Convert Xen hypercall indirect jumps
Convert indirect call in Xen hypercall to use non-speculative sequence,
when CONFIG_RETPOLINE is enabled.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Link: https://lkml.kernel.org/r/1515707194-20531-10-git-send-email-dwmw@amazon.co.uk
David Woodhouse [Thu, 11 Jan 2018 21:46:30 +0000 (21:46 +0000)]
x86/retpoline/hyperv: Convert assembler indirect jumps
Convert all indirect jumps in hyperv inline asm code to use non-speculative
sequences when CONFIG_RETPOLINE is enabled.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Link: https://lkml.kernel.org/r/1515707194-20531-9-git-send-email-dwmw@amazon.co.uk
David Woodhouse [Thu, 11 Jan 2018 21:46:29 +0000 (21:46 +0000)]
x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
Convert all indirect jumps in ftrace assembler code to use non-speculative
sequences when CONFIG_RETPOLINE is enabled.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Link: https://lkml.kernel.org/r/1515707194-20531-8-git-send-email-dwmw@amazon.co.uk
David Woodhouse [Thu, 11 Jan 2018 21:46:28 +0000 (21:46 +0000)]
x86/retpoline/entry: Convert entry assembler indirect jumps
Convert indirect jumps in core 32/64bit entry assembler code to use
non-speculative sequences when CONFIG_RETPOLINE is enabled.
Don't use CALL_NOSPEC in entry_SYSCALL_64_fastpath because the return
address after the 'call' instruction must be *precisely* at the
.Lentry_SYSCALL_64_after_fastpath label for stub_ptregs_64 to work,
and the use of alternatives will mess that up unless we play horrid
games to prepend with NOPs and make the variants the same length. It's
not worth it; in the case where we ALTERNATIVE out the retpoline, the
first instruction at __x86.indirect_thunk.rax is going to be a bare
jmp *%rax anyway.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Link: https://lkml.kernel.org/r/1515707194-20531-7-git-send-email-dwmw@amazon.co.uk
David Woodhouse [Thu, 11 Jan 2018 21:46:27 +0000 (21:46 +0000)]
x86/retpoline/crypto: Convert crypto assembler indirect jumps
Convert all indirect jumps in crypto assembler code to use non-speculative
sequences when CONFIG_RETPOLINE is enabled.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Link: https://lkml.kernel.org/r/1515707194-20531-6-git-send-email-dwmw@amazon.co.uk
David Woodhouse [Thu, 11 Jan 2018 21:46:26 +0000 (21:46 +0000)]
x86/spectre: Add boot time option to select Spectre v2 mitigation
Add a spectre_v2= option to select the mitigation used for the indirect
branch speculation vulnerability.
Currently, the only option available is retpoline, in its various forms.
This will be expanded to cover the new IBRS/IBPB microcode features.
The RETPOLINE_AMD feature relies on a serializing LFENCE for speculation
control. For AMD hardware, only set RETPOLINE_AMD if LFENCE is a
serializing instruction, which is indicated by the LFENCE_RDTSC feature.
[ tglx: Folded back the LFENCE/AMD fixes and reworked it so IBRS
integration becomes simple ]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Link: https://lkml.kernel.org/r/1515707194-20531-5-git-send-email-dwmw@amazon.co.uk