target/ppc: Moved XSTSTDC[QDS]P to decodetree

Moved XSTSTDCSP, XSTSTDCDP and XSTSTDCQP to decodetree and moved some of
its decoding away from the helper as previously the DCMX, XB and BF were
calculated in the helper with the help of cpu_env, now that part was
moved to the decodetree with the rest.

xvtstdcsp:
rept    loop    master             patch
8       12500   1,85393600         1,94683600 (+5.0%)
25      4000    1,78779800         1,92479000 (+7.7%)
100     1000    2,12775000         2,28895500 (+7.6%)
500     200     2,99655300         3,23102900 (+7.8%)
2500    40      6,89082200         7,44827500 (+8.1%)
8000    12     17,50585500        18,95152100 (+8.3%)

xvtstdcdp:
rept    loop    master             patch
8       12500   1,39043100         1,33539800 (-4.0%)
25      4000    1,35731800         1,37347800 (+1.2%)
100     1000    1,51514800         1,56053000 (+3.0%)
500     200     2,21014400         2,47906000 (+12.2%)
2500    40      5,39488200         6,68766700 (+24.0%)
8000    12     13,98623900        18,17661900 (+30.0%)

xvtstdcdp:
rept    loop    master             patch
8       12500   1,35123800         1,34455800 (-0.5%)
25      4000    1,36441200         1,36759600 (+0.2%)
100     1000    1,49763500         1,54138400 (+2.9%)
500     200     2,19020200         2,46196400 (+12.4%)
2500    40      5,39265700         6,68147900 (+23.9%)
8000    12     14,04163600        18,19669600 (+29.6%)

As some values are now decoded outside the helper and passed to it as an
argument the number of arguments of the helper increased, the number
of TCGop needed to load the arguments increased. I suspect that's why
the slow-down in the tests with a high REPT but low LOOP.

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-12-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: Moved XVTSTDC[DS]P to decodetree

Moved XVTSTDCSP and XVTSTDCDP to decodetree an restructured the helper
to be simpler and do all decoding in the decodetree (so XB, XT and DCMX
are all calculated outside the helper).

Obs: The tests in this one are slightly different, these are the sum of
these instructions with all possible immediate and those instructions
are repeated 10 times.

xvtstdcsp:
rept    loop    master             patch
8       12500   2,76402100         2,70699100 (-2.1%)
25      4000    2,64867100         2,67884100 (+1.1%)
100     1000    2,73806300         2,78701000 (+1.8%)
500     200     3,44666500         3,61027600 (+4.7%)
2500    40      5,85790200         6,47475500 (+10.5%)
8000    12     15,22102100        17,46062900 (+14.7%)

xvtstdcdp:
rept    loop    master             patch
8       12500   2,11818000         1,61065300 (-24.0%)
25      4000    2,04573400         1,60132200 (-21.7%)
100     1000    2,13834100         1,69988100 (-20.5%)
500     200     2,73977000         2,48631700 (-9.3%)
2500    40      5,05067000         5,25914100 (+4.1%)
8000    12     14,60507800        15,93704900 (+9.1%)

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-11-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: Use gvec to decode XVCPSGN[SD]P

Moved XVCPSGNSP and XVCPSGNDP to decodetree and used gvec to translate
them.

xvcpsgnsp:
rept    loop    master             patch
8       12500   0,00561400         0,00537900 (-4.2%)
25      4000    0,00562100         0,00400000 (-28.8%)
100     1000    0,00696900         0,00416300 (-40.3%)
500     200     0,02211900         0,00840700 (-62.0%)
2500    40      0,09328600         0,02728300 (-70.8%)
8000    12      0,27295300         0,06867800 (-74.8%)

xvcpsgndp:
rept    loop    master             patch
8       12500   0,00556300         0,00584200 (+5.0%)
25      4000    0,00482700         0,00431700 (-10.6%)
100     1000    0,00585800         0,00464400 (-20.7%)
500     200     0,01565300         0,00839700 (-46.4%)
2500    40      0,05766500         0,02430600 (-57.8%)
8000    12      0,19875300         0,07947100 (-60.0%)

Like the previous instructions there seemed to be a improvement on
translation time.

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-10-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: Use gvec to decode XV[N]ABS[DS]P/XVNEG[DS]P

Moved XVABSSP, XVABSDP, XVNABSSP,XVNABSDP, XVNEGSP and XVNEGDP to
decodetree and used gvec to translate them.

xvabssp:
rept    loop    master             patch
8       12500   0,00477900         0,00476000 (-0.4%)
25      4000    0,00442800         0,00353300 (-20.2%)
100     1000    0,00478700         0,00366100 (-23.5%)
500     200     0,00973200         0,00649400 (-33.3%)
2500    40      0,03165200         0,02226700 (-29.7%)
8000    12      0,09315900         0,06674900 (-28.3%)

xvabsdp:
rept    loop    master             patch
8       12500   0,00475000         0,00474400 (-0.1%)
25      4000    0,00355600         0,00367500 (+3.3%)
100     1000    0,00444200         0,00366000 (-17.6%)
500     200     0,00942700         0,00732400 (-22.3%)
2500    40      0,02990000         0,02308500 (-22.8%)
8000    12      0,08770300         0,06683800 (-23.8%)

xvnabssp:
rept    loop    master             patch
8       12500   0,00494500         0,00492900 (-0.3%)
25      4000    0,00397700         0,00338600 (-14.9%)
100     1000    0,00421400         0,00353500 (-16.1%)
500     200     0,01048000         0,00707100 (-32.5%)
2500    40      0,03251500         0,02238300 (-31.2%)
8000    12      0,08889100         0,06469800 (-27.2%)

xvnabsdp:
rept    loop    master             patch
8       12500   0,00511000         0,00492700 (-3.6%)
25      4000    0,00398800         0,00381500 (-4.3%)
100     1000    0,00390500         0,00365900 (-6.3%)
500     200     0,00924800         0,00784600 (-15.2%)
2500    40      0,03138900         0,02391600 (-23.8%)
8000    12      0,09654200         0,05684600 (-41.1%)

xvnegsp:
rept    loop    master             patch
8       12500   0,00493900         0,00452800 (-8.3%)
25      4000    0,00369100         0,00366800 (-0.6%)
100     1000    0,00371100         0,00380000 (+2.4%)
500     200     0,00991100         0,00652300 (-34.2%)
2500    40      0,03025800         0,02422300 (-19.9%)
8000    12      0,09251100         0,06457600 (-30.2%)

xvnegdp:
rept    loop    master             patch
8       12500   0,00474900         0,00454400 (-4.3%)
25      4000    0,00353100         0,00325600 (-7.8%)
100     1000    0,00398600         0,00366800 (-8.0%)
500     200     0,01032300         0,00702400 (-32.0%)
2500    40      0,03125000         0,02422400 (-22.5%)
8000    12      0,09475100         0,06173000 (-34.9%)

This one to me seemed the opposite of the previous instructions, as it
looks like there was an improvement in the translation time (itself not
a surprise as operations were done twice before so there was the need to
translate twice as many TCGop)

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-9-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: Move VABSDU[BHW] to decodetree and use gvec

Moved VABSDUB, VABSDUH and VABSDUW to decodetree and use gvec to
translate them.

vabsdub:
rept    loop    master             patch
8       12500   0,03601600         0,00688500 (-80.9%)
25      4000    0,03651000         0,00532100 (-85.4%)
100     1000    0,03666900         0,00595300 (-83.8%)
500     200     0,04305800         0,01244600 (-71.1%)
2500    40      0,06893300         0,04273700 (-38.0%)
8000    12      0,14633200         0,12660300 (-13.5%)

vabsduh:
rept    loop    master             patch
8       12500   0,02172400         0,00687500 (-68.4%)
25      4000    0,02154100         0,00531500 (-75.3%)
100     1000    0,02235400         0,00596300 (-73.3%)
500     200     0,02827500         0,01245100 (-56.0%)
2500    40      0,05638400         0,04285500 (-24.0%)
8000    12      0,13166000         0,12641400 (-4.0%)

vabsduw:
rept    loop    master             patch
8       12500   0,01646400         0,00688300 (-58.2%)
25      4000    0,01454500         0,00475500 (-67.3%)
100     1000    0,01545800         0,00511800 (-66.9%)
500     200     0,02168200         0,01114300 (-48.6%)
2500    40      0,04571300         0,04138800 (-9.5%)
8000    12      0,12209500         0,12178500 (-0.3%)

Same as VADDCUW and VSUBCUW, overall performance gain but it uses more
TCGop (4 before the patch, 6 after).

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-8-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: Move VAVG[SU][BHW] to decodetree and use gvec

Moved the instructions VAVGUB, VAVGUH, VAVGUW, VAVGSB, VAVGSH, VAVGSW,
to decodetree and use gvec with them. For these one the right shift
had to be made before the sum as to avoid an overflow, so add 1 at the
end if any of the entries had 1 in its LSB as to replicate the "+ 1"
before the shift described by the ISA.

vavgub:
rept    loop    master             patch
8       12500   0,02616600         0,00754200 (-71.2%)
25      4000    0,02530000         0,00637700 (-74.8%)
100     1000    0,02604600         0,00790100 (-69.7%)
500     200     0,03189300         0,01838400 (-42.4%)
2500    40      0,06006900         0,06851000 (+14.1%)
8000    12      0,13941000         0,20548500 (+47.4%)

vavguh:
rept    loop    master             patch
8       12500   0,01818200         0,00780600 (-57.1%)
25      4000    0,01789300         0,00641600 (-64.1%)
100     1000    0,01899100         0,00787200 (-58.5%)
500     200     0,02527200         0,01828400 (-27.7%)
2500    40      0,05361800         0,06773000 (+26.3%)
8000    12      0,12886600         0,20291400 (+57.5%)

vavguw:
rept    loop    master             patch
8       12500   0,01423100         0,00776600 (-45.4%)
25      4000    0,01780800         0,00638600 (-64.1%)
100     1000    0,02085500         0,00787000 (-62.3%)
500     200     0,02737100         0,01828800 (-33.2%)
2500    40      0,05572600         0,06774200 (+21.6%)
8000    12      0,13101700         0,20311600 (+55.0%)

vavgsb:
rept    loop    master             patch
8       12500   0,03006000         0,00788600 (-73.8%)
25      4000    0,02882200         0,00637800 (-77.9%)
100     1000    0,02958000         0,00791400 (-73.2%)
500     200     0,03548800         0,01860400 (-47.6%)
2500    40      0,06360000         0,06850800 (+7.7%)
8000    12      0,13816500         0,20550300 (+48.7%)

vavgsh:
rept    loop    master             patch
8       12500   0,01965900         0,00776600 (-60.5%)
25      4000    0,01875400         0,00638700 (-65.9%)
100     1000    0,01952200         0,00786900 (-59.7%)
500     200     0,02562000         0,01760300 (-31.3%)
2500    40      0,05384300         0,06742800 (+25.2%)
8000    12      0,13240800         0,20330000 (+53.5%)

vavgsw:
rept    loop    master             patch
8       12500   0,01407700         0,00775600 (-44.9%)
25      4000    0,01762300         0,00640000 (-63.7%)
100     1000    0,02046500         0,00788500 (-61.5%)
500     200     0,02745600         0,01843000 (-32.9%)
2500    40      0,05375500         0,06820500 (+26.9%)
8000    12      0,13068300         0,20304900 (+55.4%)

These results to me seems to indicate that with gvec the results have a
slower translation but faster execution.

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-7-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: Move VPRTYB[WDQ] to decodetree and use gvec

Moved VPRTYBW and VPRTYBD to use gvec and both of them and VPRTYBQ to
decodetree. VPRTYBW and VPRTYBD now also use .fni4 and .fni8,
respectively.

vprtybw:
rept    loop    master             patch
8       12500   0,01198900         0,00703100 (-41.4%)
25      4000    0,01070100         0,00571400 (-46.6%)
100     1000    0,01123300         0,00678200 (-39.6%)
500     200     0,01601500         0,01535600 (-4.1%)
2500    40      0,03872900         0,05562100 (43.6%)
8000    12      0,10047000         0,16643000 (65.7%)

vprtybd:
rept    loop    master             patch
8       12500   0,00757700         0,00788100 (4.0%)
25      4000    0,00652500         0,00669600 (2.6%)
100     1000    0,00714400         0,00825400 (15.5%)
500     200     0,01211000         0,01903700 (57.2%)
2500    40      0,03483800         0,07021200 (101.5%)
8000    12      0,09591800         0,21036200 (119.3%)

vprtybq:
rept    loop    master             patch
8       12500   0,00675600         0,00667200 (-1.2%)
25      4000    0,00619400         0,00643200 (3.8%)
100     1000    0,00707100         0,00751100 (6.2%)
500     200     0,01199300         0,01342000 (11.9%)
2500    40      0,03490900         0,04092900 (17.2%)
8000    12      0,09588200         0,11465100 (19.6%)

I wasn't expecting such a performance lost in both VPRTYBD and VPRTYBQ,
I'm not sure if it's worth to move those instructions. Comparing the
assembly of the helper with the TCGop they are pretty similar, so
I'm not sure why vprtybd took so much more time.

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-6-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: Move VNEG[WD] to decodtree and use gvec

Moved the instructions VNEGW and VNEGD to decodetree and used gvec to
decode it.

vnegw:
rept    loop    master             patch
8       12500   0,01053200         0,00548400 (-47.9%)
25      4000    0,01030500         0,00390000 (-62.2%)
100     1000    0,01096300         0,00395400 (-63.9%)
500     200     0,01472000         0,00712300 (-51.6%)
2500    40      0,03809000         0,02147700 (-43.6%)
8000    12      0,09957100         0,06202100 (-37.7%)

vnegd:
rept    loop    master             patch
8       12500   0,00594600         0,00543800 (-8.5%)
25      4000    0,00575200         0,00396400 (-31.1%)
100     1000    0,00676100         0,00394800 (-41.6%)
500     200     0,01149300         0,00709400 (-38.3%)
2500    40      0,03441500         0,02169600 (-37.0%)
8000    12      0,09516900         0,06337000 (-33.4%)

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-5-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: Move V(ADD|SUB)CUW to decodetree and use gvec

This patch moves VADDCUW and VSUBCUW to decodtree with gvec using an
implementation based on the helper, with the main difference being
changing the -1 (aka all bits set to 1) result returned by cmp when
true to +1. It also implemented a .fni4 version of those instructions
and dropped the helper.

vaddcuw:
rept    loop    master             patch
8       12500   0,01008200         0,00612400 (-39.3%)
25      4000    0,01091500         0,00471600 (-56.8%)
100     1000    0,01332500         0,00593700 (-55.4%)
500     200     0,01998500         0,01275700 (-36.2%)
2500    40      0,04704300         0,04364300 (-7.2%)
8000    12      0,10748200         0,11241000 (+4.6%)

vsubcuw:
rept    loop    master             patch
8       12500   0,01226200         0,00571600 (-53.4%)
25      4000    0,01493500         0,00462100 (-69.1%)
100     1000    0,01522700         0,00455100 (-70.1%)
500     200     0,02384600         0,01133500 (-52.5%)
2500    40      0,04935200         0,03178100 (-35.6%)
8000    12      0,09039900         0,09440600 (+4.4%)

Overall there was a gain in performance, but the TCGop code was still
slightly bigger in the new version (it went from 4 to 5).

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-4-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: Move VMH[R]ADDSHS instruction to decodetree

This patch moves VMHADDSHS and VMHRADDSHS to decodetree I couldn't find
a satisfactory implementation with TCG inline.

vmhaddshs:
rept    loop    master             patch
8       12500   0,02983400         0,02648500 (-11.2%)
25      4000    0,02946000         0,02518000 (-14.5%)
100     1000    0,03104300         0,02638000 (-15.0%)
500     200     0,04002000         0,03502500 (-12.5%)
2500    40      0,08090100         0,07562200 (-6.5%)
8000    12      0,19242600         0,18626800 (-3.2%)

vmhraddshs:
rept    loop    master             patch
8       12500   0,03078600         0,02851000 (-7.4%)
25      4000    0,02793200         0,02746900 (-1.7%)
100     1000    0,02886000         0,02839900 (-1.6%)
500     200     0,03714700         0,03799200 (+2.3%)
2500    40      0,07948000         0,07852200 (-1.2%)
8000    12      0,19049800         0,18813900 (-1.2%)

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-3-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: Moved VMLADDUHM to decodetree and use gvec

This patch moves VMLADDUHM to decodetree a creates a gvec implementation
using mul_vec and add_vec.

rept    loop    master             patch
8       12500   0,01810500         0,00903100 (-50.1%)
25      4000    0,01739400         0,00747700 (-57.0%)
100     1000    0,01843600         0,00901400 (-51.1%)
500     200     0,02574600         0,01971000 (-23.4%)
2500    40      0,05921600         0,07121800 (+20.3%)
8000    12      0,15326700         0,21725200 (+41.7%)

The significant difference in performance when REPT is low and LOOP is
high I think is due to the fact that the new implementation has a higher
translation time, as when using a helper only 5 TCGop are used but with
the patch a total of 10 TCGop are needed (Power lacks a direct mul_vec
equivalent so this instruction is implemented with the help of 5 others,
vmuleu, vmulou, vmrgh, vmrgl and vpkum).

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-2-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: move msgsync to decodetree

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20221006200654.725390-7-matheus.ferst@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: move msgclrp/msgsndp to decodetree

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20221006200654.725390-6-matheus.ferst@eldorado.org.br>
[danielhb: ppc32 build fix in trans_(MSGCLRP|MSGSNDP)]
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: move msgclr/msgsnd to decodetree

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20221006200654.725390-5-matheus.ferst@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: fix REQUIRE_HV macro definition

The macro is missing a '{' after the if condition. Any use of REQUIRE_HV
would cause a compilation error.

Fixes: fc34e81acd51 ("target/ppc: add macros to check privilege level")
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20221006200654.725390-4-matheus.ferst@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: fix msgsync insns flags

This instruction was added by Power ISA 3.0, using PPC2_PRCNTL makes it
available for older processors, like de e5500 and e6500.

Fixes: 7af1e7b02264 ("target/ppc: add support for hypervisor doorbells on book3s CPUs")
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20221006200654.725390-3-matheus.ferst@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc: fix msgclr/msgsnd insns flags

On Power ISA v2.07, the category for these instructions became
"Embedded.Processor Control" or "Book S".

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20221006200654.725390-2-matheus.ferst@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

Merge tag 'dump-pull-request' of https://gitlab.com/marcandre.lureau/qemu into staging

dump queue

Hi

The "dump" queue, with:
- [PATCH v3/v4 0/9] dump: Cleanup and consolidation
- [PATCH v4 0/4] dump: add 32-bit guest Windows support

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# gpg: Signature made Wed 26 Oct 2022 04:55:31 EDT
# gpg:                using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg:                issuer "marcandre.lureau@redhat.com"
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [full]
# gpg:                 aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [full]
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276  F62D DAE8 E109 7596 9CE5

* tag 'dump-pull-request' of https://gitlab.com/marcandre.lureau/qemu:
  dump/win_dump: limit number of processed PRCBs
  s390x: pv: Add dump support
  s390x: Add KVM PV dump interface
  include/elf.h: add s390x note types
  s390x: Introduce PV query interface
  s390x: Add protected dump cap
  dump: Add architecture section and section string table support
  dump: Reintroduce memory_offset and section_offset
  dump: Reorder struct DumpState
  dump: Write ELF section headers right after ELF header
  dump: Use a buffer for ELF section data and headers

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Merge tag 'pull-tcg-20221026' of https://gitlab.com/rth7680/qemu into staging

Revert incorrect cflags initialization.
Add direct jumps for tcg/loongarch64.
Speed up breakpoint check.
Improve assertions for atomic.h.
Move restore_state_to_opc to TCGCPUOps.
Cleanups to TranslationBlock maintenance.

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# gpg: Signature made Tue 25 Oct 2022 22:08:14 EDT
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# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* tag 'pull-tcg-20221026' of https://gitlab.com/rth7680/qemu: (47 commits)
  accel/tcg: Remove restore_state_to_opc function
  target/xtensa: Convert to tcg_ops restore_state_to_opc
  target/tricore: Convert to tcg_ops restore_state_to_opc
  target/sparc: Convert to tcg_ops restore_state_to_opc
  target/sh4: Convert to tcg_ops restore_state_to_opc
  target/s390x: Convert to tcg_ops restore_state_to_opc
  target/rx: Convert to tcg_ops restore_state_to_opc
  target/riscv: Convert to tcg_ops restore_state_to_opc
  target/ppc: Convert to tcg_ops restore_state_to_opc
  target/openrisc: Convert to tcg_ops restore_state_to_opc
  target/nios2: Convert to tcg_ops restore_state_to_opc
  target/mips: Convert to tcg_ops restore_state_to_opc
  target/microblaze: Convert to tcg_ops restore_state_to_opc
  target/m68k: Convert to tcg_ops restore_state_to_opc
  target/loongarch: Convert to tcg_ops restore_state_to_opc
  target/i386: Convert to tcg_ops restore_state_to_opc
  target/hppa: Convert to tcg_ops restore_state_to_opc
  target/hexagon: Convert to tcg_ops restore_state_to_opc
  target/cris: Convert to tcg_ops restore_state_to_opc
  target/avr: Convert to tcg_ops restore_state_to_opc
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Merge tag 'pull-aspeed-20221025' of https://github.com/legoater/qemu into staging

aspeed queue :

* Performance improvement with Object class caching
* Serial Flash Discovery Parameters support for m25p80 device
* Various small adjustments on intructions and models

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# gpg: Signature made Tue 25 Oct 2022 11:14:41 EDT
# gpg:                using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@kaod.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
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* tag 'pull-aspeed-20221025' of https://github.com/legoater/qemu:
  arm/aspeed: Replace mx25l25635e chip model
  m25p80: Add the w25q01jvq SFPD table
  m25p80: Add the w25q512jv SFPD table
  m25p80: Add the w25q256 SFPD table
  m25p80: Add the mx66l1g45g SFDP table
  m25p80: Add the mx25l25635f SFPD table
  m25p80: Add the mx25l25635e SFPD table
  m25p80: Add erase size for mx25l25635e
  m25p80: Add the n25q256a SFDP table
  m25p80: Add basic support for the SFDP command
  hw/arm/aspeed: increase Bletchley memory size
  ast2600: Drop NEON from the CPU features
  aspeed/smc: Cache AspeedSMCClass
  ssi: cache SSIPeripheralClass to avoid GET_CLASS()
  tests/avocado/machine_aspeed.py: Fix typos on buildroot
  hw/i2c/aspeed: Fix old reg slave receive

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

dump/win_dump: limit number of processed PRCBs

When number of CPUs utilized by guest Windows is less than defined in
QEMU (i.e., desktop versions of Windows severely limits number of CPU
sockets), patch_and_save_context routine accesses non-existent PRCB and
fails. So, limit number of processed PRCBs by NumberProcessors taken
from guest Windows driver.

Signed-off-by: Viktor Prutyanov <viktor.prutyanov@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221019235948.656411-1-viktor.prutyanov@redhat.com>

s390x: pv: Add dump support

Sometimes dumping a guest from the outside is the only way to get the
data that is needed. This can be the case if a dumping mechanism like
KDUMP hasn't been configured or data needs to be fetched at a specific
point. Dumping a protected guest from the outside without help from
fw/hw doesn't yield sufficient data to be useful. Hence we now
introduce PV dump support.

The PV dump support works by integrating the firmware into the dump
process. New Ultravisor calls are used to initiate the dump process,
dump cpu data, dump memory state and lastly complete the dump process.
The UV calls are exposed by KVM via the new KVM_PV_DUMP command and
its subcommands. The guest's data is fully encrypted and can only be
decrypted by the entity that owns the customer communication key for
the dumped guest. Also dumping needs to be allowed via a flag in the
SE header.

On the QEMU side of things we store the PV dump data in the newly
introduced architecture ELF sections (storage state and completion
data) and the cpu notes (for cpu dump data).

Users can use the zgetdump tool to convert the encrypted QEMU dump to an
unencrypted one.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Message-Id: <20221017083822.43118-11-frankja@linux.ibm.com>

s390x: Add KVM PV dump interface

Let's add a few bits of code which hide the new KVM PV dump API from
us via new functions.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
[ Marc-André: fix up for compilation issue ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017083822.43118-10-frankja@linux.ibm.com>

include/elf.h: add s390x note types

Adding two s390x note types

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20221017083822.43118-9-frankja@linux.ibm.com>

s390x: Introduce PV query interface

Introduce an interface over which we can get information about UV data.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20221017083822.43118-8-frankja@linux.ibm.com>

s390x: Add protected dump cap

Add a protected dump capability for later feature checking.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Message-Id: <20221017083822.43118-7-frankja@linux.ibm.com>
[ Marc-André - Add missing stubs when !kvm ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

accel/tcg: Remove restore_state_to_opc function

All targets have been updated.  Use the tcg_ops target hook
exclusively, which allows the compat code to be removed.

Reviewed-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/xtensa: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/tricore: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/sparc: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/sh4: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/s390x: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/rx: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/riscv: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/ppc: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/openrisc: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/nios2: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/mips: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/microblaze: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/m68k: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/loongarch: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/i386: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/hppa: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/hexagon: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/cris: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/avr: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/alpha: Convert to tcg_ops restore_state_to_opc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Add restore_state_to_opc to TCGCPUOps

Add a tcg_ops hook to replace the restore_state_to_opc
function call.  Because these generic hooks cannot depend
on target-specific types, temporarily, copy the current
target_ulong data[] into uint64_t d64[].

Reviewed-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Simplify page_get/alloc_target_data

Since the only user, Arm MTE, always requires allocation,
merge the get and alloc functions to always produce a
non-null result.  Also assume that the user has already
checked page validity.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Move TARGET_PAGE_DATA_SIZE impl to user-exec.c

Since "target data" is always user-only, move it out of
translate-all.c to user-exec.c.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Use tb_invalidate_phys_range in page_set_flags

Flush translation blocks in bulk, rather than page-by-page.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Use page_reset_target_data in page_set_flags

Use the existing function for clearing target data.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Call tb_invalidate_phys_page for PAGE_RESET

When PAGE_RESET is set, we are replacing pages with new
content, which means that we need to invalidate existing
cached data, such as TranslationBlocks.  Perform the
reset invalidate while we're doing other invalidates,
which allows us to remove the separate invalidates from
the user-only mmap/munmap/mprotect routines.

In addition, restrict invalidation to PAGE_EXEC pages.
Since cdf713085131, we have validated PAGE_EXEC is present
before translation, which means we can assume that if the
bit is not present, there are no translations to invalidate.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Use tb_invalidate_phys_page in page_set_flags

We do not require detection of overlapping TBs here,
so use the more appropriate function.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Unify declarations of tb_invalidate_phys_range

We missed this function when we introduced tb_page_addr_t.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Rename tb_invalidate_phys_page_range and drop end parameter

This function is is never called with a real range,
only for a single page.  Drop the second parameter
and rename to tb_invalidate_phys_page.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Rename tb_invalidate_phys_page

Rename to tb_invalidate_phys_page_unwind to emphasize that
we also detect invalidating the current TB, and also to free
up that name for other usage.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Introduce tb_{set_}page_addr{0,1}

This data structure will be replaced for user-only: add accessors.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Remove duplicate store to tb->page_addr[]

When we added the fast path, we initialized page_addr[] early.
These stores in and around tb_page_add() are redundant; remove them.

Fixes: 50627f1b7b1 ("accel/tcg: Add fast path for translator_ld*")
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Drop cpu_get_tb_cpu_state from TARGET_HAS_PRECISE_SMC

The results of the calls to cpu_get_tb_cpu_state,
current_{pc,cs_base,flags}, are not used.
In tb_invalidate_phys_page, use bool for current_tb_modified.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Move assert_no_pages_locked to internal.h

There are no users outside of accel/tcg; this function
does not need to be defined in exec-all.h.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Split out tb-maint.c

Move all of the TranslationBlock flushing and page linking
code from translate-all.c to tb-maint.c.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Split out PageDesc to internal.h

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Remove disabled debug in translate-all.c

These items printf, and could be replaced with proper
tracepoints if we really cared.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Make page_alloc_target_data allocation constant

Use a constant target data allocation size for all pages.
This will be necessary to reduce overhead of page tracking.
Since TARGET_PAGE_DATA_SIZE is now required, we can use this
to omit data tracking for targets that don't require it.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/qemu/thread: Use qatomic_* functions

Use qatomic_*, which expands to __atomic_* in preference
to the "legacy" __sync_* functions.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/qemu/atomic: Use qemu_build_assert

Change from QEMU_BUILD_BUG_ON, which requires ifdefs to avoid
problematic code, to qemu_build_assert, which can use C ifs.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/qemu/osdep: Add qemu_build_assert

This differs from assert, in that with optimization enabled it
triggers at build-time.  It differs from QEMU_BUILD_BUG_ON,
aka _Static_assert, in that it is sensitive to control flow
and is subject to dead-code elimination.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Add a quicker check for breakpoints

Profiling QEMU during Fedora 35 for PPC64 boot revealed that a
considerable amount of time was being spent in
check_for_breakpoints() (0.61% of total time on PPC64 and 2.19% on
amd64), even though it was just checking that its queue was empty
and returning, when no breakpoints were set. It turns out this
function is not inlined by the compiler and it's always called by
helper_lookup_tb_ptr(), one of the most called functions.

By leaving only the check for empty queue in
check_for_breakpoints() and moving the remaining code to
check_for_breakpoints_slow(), called only when the queue is not
empty, it's possible to avoid the call overhead. An improvement of
about 3% in total time was measured on POWER9.

Signed-off-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221025202424.195984-2-leandro.lupori@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Merge tag 'trivial-branch-for-7.2-pull-request' of https://gitlab.com/laurent_vivier/qemu into staging

Pull request

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# gpg: Signature made Tue 25 Oct 2022 03:53:08 EDT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* tag 'trivial-branch-for-7.2-pull-request' of https://gitlab.com/laurent_vivier/qemu:
  accel/tcg/tcg-accel-ops-rr: fix trivial typo
  ui: remove useless typecasts
  treewide: Remove the unnecessary space before semicolon
  include/hw/scsi/scsi.h: Remove unused scsi_legacy_handle_cmdline() prototype
  vmstate-static-checker:remove this redundant return
  tests/qtest: vhost-user-test: Fix [-Werror=format-overflow=] build warning
  tests/qtest: migration-test: Fix [-Werror=format-overflow=] build warning
  Drop useless casts from g_malloc() & friends to pointer
  elf2dmp: free memory in failure
  hw/core: Tidy up unnecessary casting away of const
  .gitignore: add multiple items to .gitignore

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Merge tag 'linux-user-for-7.2-pull-request' of https://gitlab.com/laurent_vivier/qemu into staging

linux-user pull request 20221025

Add faccess2()
Fix ioclt(), execve(), pidfd_send_signal() and MIPS n32 syscall ABI
Improve EXCP_DUMP()

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# gpg: Signature made Tue 25 Oct 2022 03:35:08 EDT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* tag 'linux-user-for-7.2-pull-request' of https://gitlab.com/laurent_vivier/qemu:
  linux-user: Add guest memory layout to exception dump
  linux-user: Implement faccessat2
  linux-user: remove conditionals for many fs.h ioctls
  linux-user: add more compat ioctl definitions
  linux-user: don't use AT_EXECFD in do_openat()
  linux-user: handle /proc/self/exe with execve() syscall
  linux-user: fix pidfd_send_signal()
  linux-user: Fix more MIPS n32 syscall ABI issues

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

tcg/aarch64: Remove unused code in tcg_out_op

AArch64 defines the TCG_TARGET_HAS_direct_jump. So the "else" block is
useless in the case of "INDEX_op_goto_tb" in function "tcg_out_op". Add
an assertion and delete these codes for clarity.

Suggested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Qi Hu <huqi@loongson.cn>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221017020826.990729-1-huqi@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg/loongarch64: Add direct jump support

Similar to the ARM64, LoongArch has PC-relative instructions such as
PCADDU18I. These instructions can be used to support direct jump for
LoongArch. Additionally, if instruction "B offset" can cover the target
address(target is within ±128MB range), a single "B offset" plus a nop
will be used by "tb_target_set_jump_target".

Signed-off-by: Qi Hu <huqi@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Message-Id: <20221015092754.91971-1-huqi@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Revert "accel/tcg: Init TCG cflags in vCPU thread handler"

Commit a82fd5a4ec24d was intended to be a code cleanup, but
unfortunately it has a bug. It moves the initialization of the
TCG cflags from the "start a new vcpu" function to the
thread handler; this is fine when each vcpu has its own thread,
but when we are doing round-robin of vcpus on a single thread
we end up only initializing the cflags for CPU 0, not for any
of the others.

The most obvious effect of this bug is that running in icount
mode with more than one CPU is broken; typically the guest
hangs shortly after it brings up the secondary CPUs.

This reverts commit a82fd5a4ec24d923ff1e6da128c0fd4a74079d99.

Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20221021163409.3674911-1-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

linux-user: Add guest memory layout to exception dump

When the emulation stops with a hard exception it's very useful for
debugging purposes to dump the current guest memory layout (for an
example see /proc/self/maps) beside the CPU registers.

The open_self_maps() function provides such a memory dump, but since
it's located in the syscall.c file, various changes (add #includes, make
this function externally visible, ...) are needed to be able to call it
from the existing EXCP_DUMP() macro.

This patch takes another approach by re-defining EXCP_DUMP() to call
target_exception_dump(), which is in syscall.c, consolidates the log
print functions and allows to add the call to dump the memory layout.

Beside a reduced code footprint, this approach keeps the changes across
the various callers minimal, and keeps EXCP_DUMP() highlighted as
important macro/function.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <Y1bzAWbw07WBKPxw@p100>
[lv: remove pc declaration and setting]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

dump: Add architecture section and section string table support

Add hooks which architectures can use to add arbitrary data to custom
sections.

Also add a section name string table in order to identify section
contents

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017113210.41674-1-frankja@linux.ibm.com>

dump: Reintroduce memory_offset and section_offset

section_offset will later be used to store the offset to the section
data which will be stored last. For now memory_offset is only needed
to make section_offset look nicer.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017083822.43118-5-frankja@linux.ibm.com>

dump: Reorder struct DumpState

Let's move ELF related members into one block and guest memory related
ones into another to improve readability.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017083822.43118-4-frankja@linux.ibm.com>

dump: Write ELF section headers right after ELF header

Let's start bundling the writes of the headers and of the data so we
have a clear ordering between them. Since the ELF header uses offsets
to the headers we can freely order them.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017083822.43118-3-frankja@linux.ibm.com>

dump: Use a buffer for ELF section data and headers

Currently we're writing the NULL section header if we overflow the
physical header number in the ELF header. But in the future we'll add
custom section headers AND section data.

To facilitate this we need to rearange section handling a bit. As with
the other ELF headers we split the code into a prepare and a write
step.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20221017083822.43118-2-frankja@linux.ibm.com>

Merge tag 'pull-9p-20221024' of https://github.com/cschoenebeck/qemu into staging

9pfs: performance, Windows host prep, tests restructure

* Highlight of this PR is Linus Heckemann's GHashTable patch which
  brings massive general performance improvements of 9p server
  somewhere between factor 6 .. 12.

* Bin Meng's g_mkdir patch is a preparatory patch for upcoming
  Windows host support of 9p server.

* The rest of the patches in this PR are 9p test code restructuring
  and refactoring changes to improve readability and to ease
  maintenance of 9p test code on the long-term.

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# gpg: Signature made Mon 24 Oct 2022 06:54:07 EDT
# gpg:                using RSA key 96D8D110CF7AF8084F88590134C2B58765A47395
# gpg:                issuer "qemu_oss@crudebyte.com"
# gpg: Good signature from "Christian Schoenebeck <qemu_oss@crudebyte.com>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: ECAB 1A45 4014 1413 BA38  4926 30DB 47C3 A012 D5F4
#      Subkey fingerprint: 96D8 D110 CF7A F808 4F88  5901 34C2 B587 65A4 7395

* tag 'pull-9p-20221024' of https://github.com/cschoenebeck/qemu: (23 commits)
  tests/9p: remove unnecessary g_strdup() calls
  tests/9p: merge v9fs_tunlinkat() and do_unlinkat()
  tests/9p: merge v9fs_tlink() and do_hardlink()
  tests/9p: merge v9fs_tsymlink() and do_symlink()
  tests/9p: merge v9fs_tlcreate() and do_lcreate()
  tests/9p: merge v9fs_tmkdir() and do_mkdir()
  tests/9p: convert v9fs_tflush() to declarative arguments
  tests/9p: simplify callers of twrite()
  tests/9p: convert v9fs_twrite() to declarative arguments
  tests/9p: simplify callers of tlopen()
  tests/9p: convert v9fs_tlopen() to declarative arguments
  tests/9p: simplify callers of treaddir()
  tests/9p: convert v9fs_treaddir() to declarative arguments
  tests/9p: simplify callers of tgetattr()
  tests/9p: convert v9fs_tgetattr() to declarative arguments
  tests/9p: simplify callers of tattach()
  tests/9p: merge v9fs_tattach(), do_attach(), do_attach_rqid()
  tests/9p: merge v9fs_tversion() and do_version()
  tests/9p: simplify callers of twalk()
  tests/9p: merge *walk*() functions
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* target/i386: new decoder bugfix
* target/i386: complete x86-v3 support for TCG

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# gpg: Signature made Sat 22 Oct 2022 03:07:16 EDT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  target/i386: implement FMA instructions
  target/i386: implement F16C instructions
  target/i386: introduce function to set rounding mode from FPCW or MXCSR bits
  target/i386: decode-new: avoid out-of-bounds access to xmm_regs[-1]

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Merge tag 'm68k-for-7.2-pull-request' of https://github.com/vivier/qemu-m68k into staging

Pull request m68k branch 20221024

Update rng seed boot parameter

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# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 24 Oct 2022 04:58:30 EDT
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* tag 'm68k-for-7.2-pull-request' of https://github.com/vivier/qemu-m68k:
  m68k: write bootinfo as rom section and re-randomize on reboot
  m68k: rework BI_VIRT_RNG_SEED as BI_RNG_SEED

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

accel/tcg/tcg-accel-ops-rr: fix trivial typo

Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Message-Id: <5dc556dbe241ae03859b7890d1998de5c77b7c6c.1666373742.git.quic_mathbern@quicinc.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

ui: remove useless typecasts

Commit 8f9abdf586 ("chardev: src buffer const for write functions")
changed the type of the second parameter of qemu_chr_be_write()
from uint8_t * to const uint8_t *. Remove the now useless type
casts from qemu_chr_be_write() function calls in ui/console.c and
ui/gtk.c.

Cc: qemu-trivial@nongnu.org
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Message-Id: <20221022141204.29358-1-vr_qemu@t-online.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

treewide: Remove the unnecessary space before semicolon

%s/return ;/return;

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <20221024072802.457832-1-bmeng@tinylab.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

tests/9p: remove unnecessary g_strdup() calls

This is a leftover from before the recent function merge and
refactoring patches:

As these functions do not return control to the caller in
between, it is not necessary to duplicate strings passed to them.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <0f80141cde3904ed0591354059da49d1d60bcdbc.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: merge v9fs_tunlinkat() and do_unlinkat()

As with previous patches, unify those 2 functions into a single function
v9fs_tunlinkat() by using a declarative function arguments approach.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <1dea593edd464908d92501933c068388c01f1744.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: merge v9fs_tlink() and do_hardlink()

As with previous patches, unify those 2 functions into a single function
v9fs_tlink() by using a declarative function arguments approach.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <cb4d42203e1e4e6027df4924bbe4bdbc002f668b.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: merge v9fs_tsymlink() and do_symlink()

As with previous patches, unify those 2 functions into a single function
v9fs_tsymlink() by using a declarative function arguments approach.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <563f3ad04fe596ce0ae1e2654d1d08237f18c830.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: merge v9fs_tlcreate() and do_lcreate()

As with previous patches, unify those 2 functions into a single function
v9fs_tlcreate() by using a declarative function arguments approach.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <4c01b2caa5f5b54a2020fc92701deadd2abf0571.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: merge v9fs_tmkdir() and do_mkdir()

As with previous patches, unify those 2 functions into a single function
v9fs_tmkdir() by using a declarative function arguments approach.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <b87b2c972921df980440ff5b2d3e6bb8163d6551.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: convert v9fs_tflush() to declarative arguments

Use declarative function arguments for function v9fs_tflush().

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <91b7b154298c500d100b05137146c2905c3acdec.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: simplify callers of twrite()

Now as twrite() is using a declarative approach, simplify the
code of callers of this function.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <7f280ec6a1f9d8afed46567a796562c4dc28afa9.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: convert v9fs_twrite() to declarative arguments

Use declarative function arguments for function v9fs_twrite().

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <be0326e2d9ab66f68c06b1766ddf103849d570b4.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: simplify callers of tlopen()

Now as tlopen() is using a declarative approach, simplify the
code of callers of this function.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <f74b6153e079fc7a340e5cb575ee32e0fe1e0ae6.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: convert v9fs_tlopen() to declarative arguments

Use declarative function arguments for function v9fs_tlopen().

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <765ab515353c56f88f0a163631f626a44e9565d6.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: simplify callers of treaddir()

Now as treaddir() is using a declarative approach, simplify the
code of callers of this function.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <7cec6f2c7011a481806c34908893b7282702a7a6.1664917004.git.qemu_oss@crudebyte.com>

tests/9p: convert v9fs_treaddir() to declarative arguments

Use declarative function arguments for function v9fs_treaddir().

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <a66aae4ceb19ec12d245b8c7f33a639584c8e272.1664917004.git.qemu_oss@crudebyte.com>