Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "ARM:
   - support for SVE and Pointer Authentication in guests
   - PMU improvements

  POWER:
   - support for direct access to the POWER9 XIVE interrupt controller
   - memory and performance optimizations

  x86:
   - support for accessing memory not backed by struct page
   - fixes and refactoring

  Generic:
   - dirty page tracking improvements"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (155 commits)
  kvm: fix compilation on aarch64
  Revert "KVM: nVMX: Expose RDPMC-exiting only when guest supports PMU"
  kvm: x86: Fix L1TF mitigation for shadow MMU
  KVM: nVMX: Disable intercept for FS/GS base MSRs in vmcs02 when possible
  KVM: PPC: Book3S: Remove useless checks in 'release' method of KVM device
  KVM: PPC: Book3S HV: XIVE: Fix spelling mistake "acessing" -> "accessing"
  KVM: PPC: Book3S HV: Make sure to load LPID for radix VCPUs
  kvm: nVMX: Set nested_run_pending in vmx_set_nested_state after checks complete
  tests: kvm: Add tests for KVM_SET_NESTED_STATE
  KVM: nVMX: KVM_SET_NESTED_STATE - Tear down old EVMCS state before setting new state
  tests: kvm: Add tests for KVM_CAP_MAX_VCPUS and KVM_CAP_MAX_CPU_ID
  tests: kvm: Add tests to .gitignore
  KVM: Introduce KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2
  KVM: Fix kvm_clear_dirty_log_protect off-by-(minus-)one
  KVM: Fix the bitmap range to copy during clear dirty
  KVM: arm64: Fix ptrauth ID register masking logic
  KVM: x86: use direct accessors for RIP and RSP
  KVM: VMX: Use accessors for GPRs outside of dedicated caching logic
  KVM: x86: Omit caching logic for always-available GPRs
  kvm, x86: Properly check whether a pfn is an MMIO or not
  ...

diff --cc Documentation/virtual/kvm/api.txt
index 64b38df,73a501e..ba6c42c
--- 1/Documentation/virtual/kvm/api.txt
--- 2/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@@ -3809,8 -3936,8 +3936,8 @@@ to I/O ports
  
  4.117 KVM_CLEAR_DIRTY_LOG (vm ioctl)
  
- Capability: KVM_CAP_MANUAL_DIRTY_LOG_PROTECT
+ Capability: KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2
 -Architectures: x86
 +Architectures: x86, arm, arm64, mips
  Type: vm ioctl
  Parameters: struct kvm_dirty_log (in)
  Returns: 0 on success, -1 on error
@@@ -4798,9 -4968,9 +4968,9 @@@ and injected exceptions
  * For the new DR6 bits, note that bit 16 is set iff the #DB exception
    will clear DR6.RTM.
  
- 7.18 KVM_CAP_MANUAL_DIRTY_LOG_PROTECT
+ 7.18 KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2
  
 -Architectures: all
 +Architectures: x86, arm, arm64, mips
  Parameters: args[0] whether feature should be enabled or not
  
  With this capability enabled, KVM_GET_DIRTY_LOG will not automatically

diff --cc arch/arm64/Kconfig
Simple merge

diff --cc arch/arm64/include/asm/kvm_hyp.h
Simple merge

diff --cc arch/arm64/include/asm/sysreg.h
Simple merge

diff --cc arch/arm64/kernel/asm-offsets.c
Simple merge

diff --cc arch/arm64/kernel/cpufeature.c
Simple merge

diff --cc arch/arm64/kernel/fpsimd.c
Simple merge

diff --cc arch/arm64/kernel/perf_event.c
Simple merge

diff --cc arch/powerpc/kvm/book3s_hv_rmhandlers.S
Simple merge

diff --cc arch/s390/include/asm/cpacf.h
Simple merge

diff --cc arch/s390/kvm/Kconfig
Simple merge

diff --cc arch/s390/kvm/interrupt.c
Simple merge

diff --cc arch/x86/events/intel/core.c
Simple merge

diff --cc arch/x86/include/asm/kvm_host.h
Simple merge

diff --cc arch/x86/include/asm/msr-index.h
Simple merge

diff --cc arch/x86/kvm/cpuid.c
Simple merge

diff --cc arch/x86/kvm/hyperv.c
Simple merge

diff --cc arch/x86/kvm/lapic.c
Simple merge

diff --cc arch/x86/kvm/mmu.c
Simple merge

diff --cc arch/x86/kvm/paging_tmpl.h
index 0871503,c40af67..367a47d
--- 1/arch/x86/kvm/paging_tmpl.h
--- 2/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@@ -140,16 -140,36 +140,36 @@@ static int FNAME(cmpxchg_gpte)(struct k
        pt_element_t *table;
        struct page *page;
  
 -      npages = get_user_pages_fast((unsigned long)ptep_user, 1, 1, &page);
 +      npages = get_user_pages_fast((unsigned long)ptep_user, 1, FOLL_WRITE, &page);
-       /* Check if the user is doing something meaningless. */
-       if (unlikely(npages != 1))
-               return -EFAULT;
- 
-       table = kmap_atomic(page);
-       ret = CMPXCHG(&table[index], orig_pte, new_pte);
-       kunmap_atomic(table);
- 
-       kvm_release_page_dirty(page);
+       if (likely(npages == 1)) {
+               table = kmap_atomic(page);
+               ret = CMPXCHG(&table[index], orig_pte, new_pte);
+               kunmap_atomic(table);
+ 
+               kvm_release_page_dirty(page);
+       } else {
+               struct vm_area_struct *vma;
+               unsigned long vaddr = (unsigned long)ptep_user & PAGE_MASK;
+               unsigned long pfn;
+               unsigned long paddr;
+ 
+               down_read(&current->mm->mmap_sem);
+               vma = find_vma_intersection(current->mm, vaddr, vaddr + PAGE_SIZE);
+               if (!vma || !(vma->vm_flags & VM_PFNMAP)) {
+                       up_read(&current->mm->mmap_sem);
+                       return -EFAULT;
+               }
+               pfn = ((vaddr - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
+               paddr = pfn << PAGE_SHIFT;
+               table = memremap(paddr, PAGE_SIZE, MEMREMAP_WB);
+               if (!table) {
+                       up_read(&current->mm->mmap_sem);
+                       return -EFAULT;
+               }
+               ret = CMPXCHG(&table[index], orig_pte, new_pte);
+               memunmap(table);
+               up_read(&current->mm->mmap_sem);
+       }
  
        return (ret != orig_pte);
  }

diff --cc arch/x86/kvm/svm.c
Simple merge

diff --cc arch/x86/kvm/vmx/nested.c
Simple merge

diff --cc arch/x86/kvm/vmx/vmx.c
Simple merge

diff --cc arch/x86/kvm/x86.c
index b9591ab,dc621f7..536b78c
--- 1/arch/x86/kvm/x86.c
--- 2/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@@ -6558,22 -6586,11 +6596,22 @@@ static int complete_fast_pio_out(struc
  static int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size,
                            unsigned short port)
  {
-       unsigned long val = kvm_register_read(vcpu, VCPU_REGS_RAX);
+       unsigned long val = kvm_rax_read(vcpu);
        int ret = emulator_pio_out_emulated(&vcpu->arch.emulate_ctxt,
                                            size, port, &val, 1);
 +      if (ret)
 +              return ret;
  
 -      if (!ret) {
 +      /*
 +       * Workaround userspace that relies on old KVM behavior of %rip being
 +       * incremented prior to exiting to userspace to handle "OUT 0x7e".
 +       */
 +      if (port == 0x7e &&
 +          kvm_check_has_quirk(vcpu->kvm, KVM_X86_QUIRK_OUT_7E_INC_RIP)) {
 +              vcpu->arch.complete_userspace_io =
 +                      complete_fast_pio_out_port_0x7e;
 +              kvm_skip_emulated_instruction(vcpu);
 +      } else {
                vcpu->arch.pio.linear_rip = kvm_get_linear_rip(vcpu);
                vcpu->arch.complete_userspace_io = complete_fast_pio_out;
        }

diff --cc arch/x86/kvm/x86.h
Simple merge

diff --cc include/linux/perf_event.h
Simple merge

diff --cc tools/testing/selftests/kvm/dirty_log_test.c
Simple merge

diff --cc virt/kvm/arm/arm.c
Simple merge

diff --cc virt/kvm/kvm_main.c
Simple merge