| Age | Commit message (Collapse) | Author |
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Vector instructions in general are not supposed to change the FI bit.
However, xvcmp* instructions are calling gen_helper_float_check_status,
which is leading to a cleared FI flag where it should be kept
unchanged.
As helper_float_check_status only affects inexact, overflow and
underflow, and the xvcmp* instructions don't change these flags, this
issue can be fixed by removing the call to helper_float_check_status.
By doing this, the FI bit in FPSCR will be preserved as expected.
Fixes: 00084a25adf ("target/ppc: introduce separate VSX_CMP macro for xvcmp* instructions")
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221005121551.27957-1-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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This partially reverts commit 9dc20cc37db9 ("target/ppc: Simplify
powerpc_excp_booke"), which removed DOORI and DOORCI interrupts.
Without this patch, a -cpu e5500 -smp 2 machine booting Linux
crashes with:
qemu: fatal: Invalid PowerPC exception 36. Aborting
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220924114436.1422786-1-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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* scsi-disk: support setting CD-ROM block size via device options
* target/i386: Implement MSR_CORE_THREAD_COUNT MSR
* target/i386: notify VM exit support
* target/i386: PC-relative translation block support
* target/i386: support for XSAVE state in signal frames (linux-user)
# -----BEGIN PGP SIGNATURE-----
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# =tqeJ
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 11 Oct 2022 04:27:42 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: (37 commits)
linux-user: i386/signal: support XSAVE/XRSTOR for signal frame fpstate
linux-user: i386/signal: support FXSAVE fpstate on 32-bit emulation
linux-user: i386/signal: move fpstate at the end of the 32-bit frames
KVM: x86: Implement MSR_CORE_THREAD_COUNT MSR
i386: kvm: Add support for MSR filtering
x86: Implement MSR_CORE_THREAD_COUNT MSR
target/i386: Enable TARGET_TB_PCREL
target/i386: Inline gen_jmp_im
target/i386: Add cpu_eip
target/i386: Create eip_cur_tl
target/i386: Merge gen_jmp_tb and gen_goto_tb into gen_jmp_rel
target/i386: Remove MemOp argument to gen_op_j*_ecx
target/i386: Use gen_jmp_rel for DISAS_TOO_MANY
target/i386: Use gen_jmp_rel for gen_jcc
target/i386: Use gen_jmp_rel for loop, repz, jecxz insns
target/i386: Create gen_jmp_rel
target/i386: Use DISAS_TOO_MANY to exit after gen_io_start
target/i386: Create eip_next_*
target/i386: Truncate values for lcall_real to i32
target/i386: Introduce DISAS_JUMP
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Several hypervisor capabilities in KVM are target-specific. When exposed
to QEMU users as accelerator properties (i.e. -accel kvm,prop=value), they
should not be available for all targets.
Add a hook for targets to add their own properties to -accel kvm, for
now no such property is defined.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220929072014.20705-3-chenyi.qiang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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It's always better to convey the type of a pointer if at all
possible. So let's add the DumpState typedef to typedefs.h and move
the dump note functions from the opaque pointers to DumpState
pointers.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
CC: Peter Maydell <peter.maydell@linaro.org>
CC: Cédric Le Goater <clg@kaod.org>
CC: Daniel Henrique Barboza <danielhb413@gmail.com>
CC: David Gibson <david@gibson.dropbear.id.au>
CC: Greg Kurz <groug@kaod.org>
CC: Palmer Dabbelt <palmer@dabbelt.com>
CC: Alistair Francis <alistair.francis@wdc.com>
CC: Bin Meng <bin.meng@windriver.com>
CC: Cornelia Huck <cohuck@redhat.com>
CC: Thomas Huth <thuth@redhat.com>
CC: Richard Henderson <richard.henderson@linaro.org>
CC: David Hildenbrand <david@redhat.com>
Acked-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220811121111.9878-2-frankja@linux.ibm.com>
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Populate this new method for all targets. Always match
the result that would be given by cpu_get_tb_cpu_state,
as we will want these values to correspond in the logs.
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> (target/sparc)
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
Cc: Eduardo Habkost <eduardo@habkost.net> (supporter:Machine core)
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> (supporter:Machine core)
Cc: "Philippe Mathieu-Daudé" <f4bug@amsat.org> (reviewer:Machine core)
Cc: Yanan Wang <wangyanan55@huawei.com> (reviewer:Machine core)
Cc: Michael Rolnik <mrolnik@gmail.com> (maintainer:AVR TCG CPUs)
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> (maintainer:CRIS TCG CPUs)
Cc: Taylor Simpson <tsimpson@quicinc.com> (supporter:Hexagon TCG CPUs)
Cc: Song Gao <gaosong@loongson.cn> (maintainer:LoongArch TCG CPUs)
Cc: Xiaojuan Yang <yangxiaojuan@loongson.cn> (maintainer:LoongArch TCG CPUs)
Cc: Laurent Vivier <laurent@vivier.eu> (maintainer:M68K TCG CPUs)
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> (reviewer:MIPS TCG CPUs)
Cc: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com> (reviewer:MIPS TCG CPUs)
Cc: Chris Wulff <crwulff@gmail.com> (maintainer:NiosII TCG CPUs)
Cc: Marek Vasut <marex@denx.de> (maintainer:NiosII TCG CPUs)
Cc: Stafford Horne <shorne@gmail.com> (odd fixer:OpenRISC TCG CPUs)
Cc: Yoshinori Sato <ysato@users.sourceforge.jp> (reviewer:RENESAS RX CPUs)
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> (maintainer:SPARC TCG CPUs)
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> (maintainer:TriCore TCG CPUs)
Cc: Max Filippov <jcmvbkbc@gmail.com> (maintainer:Xtensa TCG CPUs)
Cc: qemu-arm@nongnu.org (open list:ARM TCG CPUs)
Cc: qemu-ppc@nongnu.org (open list:PowerPC TCG CPUs)
Cc: qemu-riscv@nongnu.org (open list:RISC-V TCG CPUs)
Cc: qemu-s390x@nongnu.org (open list:S390 TCG CPUs)
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In ppc emulation, exception flags are not cleared at the end of an
instruction. Instead, the next instruction is responsible to clear
it before its emulation. However, some helpers are not doing it,
causing an issue where the previously set exception flags are being
used and leading to incorrect values being set in FPSCR.
Fix this by clearing fp_status before doing the instruction 'real' work
for the following helpers that were missing this behavior:
- VSX_CVT_INT_TO_FP_VECTOR
- VSX_CVT_FP_TO_FP
- VSX_CVT_FP_TO_INT_VECTOR
- VSX_CVT_FP_TO_INT2
- VSX_CVT_FP_TO_INT
- VSX_CVT_FP_TO_FP_HP
- VSX_CVT_FP_TO_FP_VECTOR
- VSX_CMP
- VSX_ROUND
- xscvqpdp
- xscvdpsp[n]
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220906125523.38765-9-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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FPR register are mapped to the first doubleword of the VSR registers.
Since PowerISA v3.1, the second doubleword of the target register
must be zeroed for FP instructions.
This patch does it by writting 0 to the second dw everytime the
first dw is being written using set_fpr.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220906125523.38765-8-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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According to PowerISA: "OV32 is set whenever OV is implicitly set, and
is set to the same value that OV is defined to be set to in 32-bit
mode".
This patch changes helper_update_ov_legacy to set/clear ov32 when
applicable.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220906125523.38765-7-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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In 205eb5a89e we updated most VSX instructions to zero the
second doubleword, as is requested by PowerISA since v3.1.
However, VSX_MADD helper was left behind unchanged, while it
is also affected and should be fixed as well.
This patch applies the fix for MADD instructions.
Fixes: 205eb5a89e ("target/ppc: Change VSX instructions behavior to fill with zeros")
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220906125523.38765-6-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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According to the ISA, for instruction DENBCD:
"If an invalid BCD digit or sign code is detected in the source
operand, an invalid-operation exception (VXCVI) occurs."
In the Invalid Operation Exception section, there is the situation:
"When Invalid Operation Exception is disabled (VE=0) and Invalid
Operation occurs (...) If the operation is an (...) or format the
target FPR is set to a Quiet NaN". This was not being done in
QEMU.
This patch sets the result to QNaN when the instruction DENBCD causes
an Invalid Operation Exception.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220906125523.38765-5-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Starting at PowerISA v3.1, the second doubleword of the registers
used to store results in DFP instructions are supposed to be zeroed.
From the ISA, chapter 7.2.1.1 Floating-Point Registers:
"""
Chapter 4. Floating-Point Facility provides 32 64-bit
FPRs. Chapter 5. Decimal Floating-Point also employs
FPRs in decimal floating-point (DFP) operations. When
VSX is implemented, the 32 FPRs are mapped to
doubleword 0 of VSRs 0-31. (...)
All instructions that operate on an FPR are redefined
to operate on doubleword element 0 of the
corresponding VSR. (...)
and the contents of doubleword element 1 of the
VSR corresponding to the target FPR or FPR pair for these
instructions are set to 0.
"""
Before, the result stored at doubleword 1 was said to be undefined.
With that, this patch changes the DFP facility to zero doubleword 1
when using set_dfp64 and set_dfp128. This fixes the behavior for ISA
3.1 while keeping the behavior correct for previous ones.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220906125523.38765-4-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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The macros xer_ov, xer_ca, xer_ov32, and xer_ca32 are both unused and
hiding the usage of env. Remove them.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220906125523.38765-3-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Very trivial rogue space removal. There are two spaces between Int128
and s128 in ppc_vsr_t struct, where it should be only one.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220906125523.38765-2-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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These two helpers are almost identical, differing only by the softfloat
operation it calls. Merge them into one using a macro.
Also, take this opportunity to capitalize the helper name as we moved
the instruction to decodetree in a previous patch.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220905123746.54659-4-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220905123746.54659-3-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220905123746.54659-2-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Implementation for instructions hashstp and hashchkp, the privileged
versions of hashst and hashchk, which were added in Power ISA 3.1B.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Lucas Mateus Castro <lucas.araujo@eldorado.org.br>
Message-Id: <20220715205439.161110-4-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Implementation for instructions hashst and hashchk, which were added
in Power ISA 3.1B.
It was decided to implement the hash algorithm from ground up in this
patch exactly as described in Power ISA.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Lucas Mateus Castro <lucas.araujo@eldorado.org.br>
Message-Id: <20220715205439.161110-3-victor.colombo@eldorado.org.br>
[danielhb: fix block comment in excp_helper.c]
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Add the Special Purpose Registers HASHKEYR and HASHPKEYR, which were
introduced by the Power ISA 3.1B. They are used by the new instructions
hashchk(p) and hashst(p).
The ISA states that the Operating System should generate the value for
these registers when creating a process, so it's its responsability to
do so. We initialize it with 0 for qemu-softmmu, and set a random 64
bits value for linux-user.
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Lucas Mateus Castro <lucas.araujo@eldorado.org.br>
Message-Id: <20220715205439.161110-2-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Pass these along to translator_loop -- pc may be used instead
of tb->pc, and host_pc is currently unused. Adjust all targets
at one time.
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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When an overflow exception occurs and OE is set the intermediate result
should be adjusted (by subtracting from the exponent) to avoid rounding
to inf. The same applies to an underflow exceptionion and UE (but adding
to the exponent). To do this set the fp_status.rebias_overflow when OE
is set and fp_status.rebias_underflow when UE is set as the FPU will
recalculate in case of a overflow/underflow if the according rebias* is
set.
Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220805141522.412864-3-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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ppc_cpu_compare_class_pvr_mask() should match the best CPU class in the
family, because it is used by the KVM subsystem to find the host CPU
class. Since commit 03ae4133ab8 ("target-ppc: Add pvr_match()
callback"), it matches any class in the family (the first one in the
comparison list).
Since commit f30c843ced5 ("ppc/pnv: Introduce PowerNV machines with
fixed CPU models"), pnv has relied on pnv_match having these new
semantics to check machine compatibility with a CPU family.
Resolve this by adding a parameter to the pvr_match function to select
the best or any match, and restore the old behaviour for the KVM case.
Prior to this fix, e.g., a POWER9 DD2.3 KVM host matches to the
power9_v1.0 class (because that happens to be the first POWER9 family
CPU compared). After the patch, it matches the power9_v2.0 class.
This approach requires pnv_match contain knowledge of the CPU classes
implemented in the same family, which feels ugly. But pushing the 'best'
match down to the class would still require they know about one another
which is not obviously much better. For now this gets things working.
Fixes: 03ae4133ab8 ("target-ppc: Add pvr_match() callback")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220731013358.170187-1-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220728201135.223-1-luoyonggang@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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ISA v2.06 adds new variations of wait, specified by the WC field. These
are not all compatible with the prior wait implementation, because they
add additional conditions that cause the processor to resume, which can
cause software to hang or run very slowly.
At this moment, with the current wait implementation and a pseries guest
using mainline kernel with new wait upcodes [1], QEMU hangs during boot if
more than one CPU is present:
qemu-system-ppc64 -M pseries,x-vof=on -cpu POWER10 -smp 2 -nographic
-kernel zImage.pseries -no-reboot
QEMU will exit (as there's no filesystem) if the test "passes", or hang
during boot if it hits the bug.
ISA v3.0 changed the wait opcode and removed the new variants (retaining
the WC field but making non-zero values reserved).
ISA v3.1 added new WC values to the new wait opcode, and added a PL
field.
This patch implements the new wait encoding and supports WC variants
with no-op implementations, which provides basic correctness as
explained in comments.
[1] https://lore.kernel.org/all/20220720132132.903462-1-npiggin@gmail.com/
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Tested-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220720133352.904263-1-npiggin@gmail.com>
[danielhb: added information about the bug being fixed]
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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According to PowerISA 3.1B, Book III 6.7.6 programming note, the
page directory base addresses are expected to be aligned to their
size. Real hardware seems to rely on that and will access the
wrong address if they are misaligned. This results in a
translation failure even if the page tables seem to be properly
populated.
Signed-off-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220628133959.15131-4-leandro.lupori@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Check if the number and size of Radix levels are valid on
POWER9/POWER10 CPUs, according to the supported Radix Tree
Configurations described in their User Manuals.
Signed-off-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220628133959.15131-3-leandro.lupori@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Check if partition and process tables are properly aligned, in
their size, according to PowerISA 3.1B, Book III 6.7.6 programming
note. Hardware and KVM also raise an exception in these cases.
Signed-off-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220628133959.15131-2-leandro.lupori@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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When using "-machine none", env->tb_env is not allocated, causing the
segmentation fault reported in issue #85 (launchpad bug #811683). To
avoid this problem, check if the pointer != NULL before calling the
methods to print TBU/TBL/DECR.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/85
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220714172343.80539-1-matheus.ferst@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Reviewed-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Message-Id: <20220701133507.740619-12-lucas.coutinho@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Reviewed-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Message-Id: <20220701133507.740619-11-lucas.coutinho@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Reviewed-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Message-Id: <20220701133507.740619-10-lucas.coutinho@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Reviewed-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Message-Id: <20220701133507.740619-9-lucas.coutinho@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Reviewed-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Message-Id: <20220701133507.740619-8-lucas.coutinho@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Reviewed-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Message-Id: <20220701133507.740619-7-lucas.coutinho@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Reviewed-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Message-Id: <20220701133507.740619-6-lucas.coutinho@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Reviewed-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Message-Id: <20220701133507.740619-5-lucas.coutinho@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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Reviewed-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Message-Id: <20220701133507.740619-4-lucas.coutinho@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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