Fix a problem similar to the one fixed by commit 703d03a4aa
("target/s390x: Fix EXECUTE of relative long instructions"), but now
for relative branches.
Reported-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230426235813.198183-2-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
It's RRE, not RXE.
Found by running valgrind's none/tests/s390x/bfp-2.
Fixes: 86b59624c4 ("s390x/tcg: Implement LOAD LENGTHENED short HFP to long HFP")
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230511134726.469651-1-iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
For being able to create a universal QEMU binary one day, core
files like machine-qmp-cmds.c must not contain any "#ifdef TARGET_..."
parts. Thus let's provide the target specific function via a
function pointer in CPUClass instead, as a first step towards
making this file target independent.
Message-Id: <20230424160434.331175-2-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
A few fixes and updates to bring OpenRISC inline with the latest
architecture spec updates:
- Allow FPCSR to be accessed in user mode
- Select tininess detection before rounding
- Fix FPE Exception PC value
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Merge tag 'or1k-pull-request-20230513' of https://github.com/stffrdhrn/qemu into staging
OpenRISC FPU Updates for 8.1
A few fixes and updates to bring OpenRISC inline with the latest
architecture spec updates:
- Allow FPCSR to be accessed in user mode
- Select tininess detection before rounding
- Fix FPE Exception PC value
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# gpg: Signature made Sat 13 May 2023 08:30:09 AM BST
# gpg: using RSA key D9C47354AEF86C103A25EFF1C3B31C2D5E6627E4
# gpg: Good signature from "Stafford Horne <shorne@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: D9C4 7354 AEF8 6C10 3A25 EFF1 C3B3 1C2D 5E66 27E4
* tag 'or1k-pull-request-20230513' of https://github.com/stffrdhrn/qemu:
target/openrisc: Setup FPU for detecting tininess before rounding
target/openrisc: Set PC to cpu state on FPU exception
target/openrisc: Allow fpcsr access in user mode
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
In check_s2_mmu_setup() we have a check that is attempting to
implement the part of AArch64.S2MinTxSZ that is specific to when EL1
is AArch32:
if !s1aarch64 then
// EL1 is AArch32
min_txsz = Min(min_txsz, 24);
Unfortunately we got this wrong in two ways:
(1) The minimum txsz corresponds to a maximum inputsize, but we got
the sense of the comparison wrong and were faulting for all
inputsizes less than 40 bits
(2) We try to implement this as an extra check that happens after
we've done the same txsz checks we would do for an AArch64 EL1, but
in fact the pseudocode is *loosening* the requirements, so that txsz
values that would fault for an AArch64 EL1 do not fault for AArch32
EL1, because it does Min(old_min, 24), not Max(old_min, 24).
You can see this also in the text of the Arm ARM in table D8-8, which
shows that where the implemented PA size is less than 40 bits an
AArch32 EL1 is still OK with a configured stage2 T0SZ for a 40 bit
IPA, whereas if EL1 is AArch64 then the T0SZ must be big enough to
constrain the IPA to the implemented PA size.
Because of part (2), we can't do this as a separate check, but
have to integrate it into aa64_va_parameters(). Add a new argument
to that function to indicate that EL1 is 32-bit. All the existing
callsites except the one in get_phys_addr_lpae() can pass 'false',
because they are either doing a lookup for a stage 1 regime or
else they don't care about the tsz/tsz_oob fields.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1627
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230509092059.3176487-1-peter.maydell@linaro.org
We cannot allow this config to be disabled at the moment as not all of
the relevant code is protected by it.
Commit 29d9efca16 ("arm/Kconfig: Do not build TCG-only boards on a
KVM-only build") moved the CONFIGs of several boards to Kconfig, so it
is now possible that nothing selects ARM_V7M (e.g. when doing a
--without-default-devices build).
Return the CONFIG_ARM_V7M entry to a state where it is always selected
whenever TCG is available.
Fixes: 29d9efca16 ("arm/Kconfig: Do not build TCG-only boards on a KVM-only build")
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230508181611.2621-3-farosas@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Semihosting has been made a 'default y' entry in Kconfig, which does
not work because when building --without-default-devices, the
semihosting code would not be available.
Make semihosting unconditional when TCG is present.
Fixes: 29d9efca16 ("arm/Kconfig: Do not build TCG-only boards on a KVM-only build")
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230508181611.2621-2-farosas@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We currently don't correctly handle the VSTCR_EL2.SW and VTCR_EL2.NSW
configuration bits. These allow configuration of whether the stage 2
page table walks for Secure IPA and NonSecure IPA should do their
descriptor reads from Secure or NonSecure physical addresses. (This
is separate from how the translation table base address and other
parameters are set: an NS IPA always uses VTTBR_EL2 and VTCR_EL2
for its base address and walk parameters, regardless of the NSW bit,
and similarly for Secure.)
Provide a new function ptw_idx_for_stage_2() which returns the
MMU index to use for descriptor reads, and use it to set up
the .in_ptw_idx wherever we call get_phys_addr_lpae().
For a stage 2 walk, wherever we call get_phys_addr_lpae():
* .in_ptw_idx should be ptw_idx_for_stage_2() of the .in_mmu_idx
* .in_secure should be true if .in_mmu_idx is Stage2_S
This allows us to correct S1_ptw_translate() so that it consistently
always sets its (out_secure, out_phys) to the result it gets from the
S2 walk (either by calling get_phys_addr_lpae() or by TLB lookup).
This makes better conceptual sense because the S2 walk should return
us an (address space, address) tuple, not an address that we then
randomly assign to S or NS.
Our previous handling of SW and NSW was broken, so guest code
trying to use these bits to put the s2 page tables in the "other"
address space wouldn't work correctly.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1600
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230504135425.2748672-3-peter.maydell@linaro.org
Bit 63 in a Table descriptor is only the NSTable bit for stage 1
translations; in stage 2 it is RES0. We were incorrectly looking at
it all the time.
This causes problems if:
* the stage 2 table descriptor was incorrectly setting the RES0 bit
* we are doing a stage 2 translation in Secure address space for
a NonSecure stage 1 regime -- in this case we would incorrectly
do an immediate downgrade to NonSecure
A bug elsewhere in the code currently prevents us from getting
to the second situation, but when we fix that it will be possible.
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230504135425.2748672-2-peter.maydell@linaro.org
While we cannot move the main "helper.h" out of target/arm/,
due to usage by generic code, we can move the sub-includes.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Message-id: 20230504110412.1892411-3-richard.henderson@linaro.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
These files got missed when populating tcg/.
Because they are included with "", no change to the users required.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230504110412.1892411-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
OpenRISC defines tininess to be detected before rounding. Setup qemu to
obey this.
Signed-off-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Store the PC to ensure the correct value can be read in the exception
handler.
Signed-off-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
As per OpenRISC spec 1.4 FPCSR can be read and written in user mode.
Update mtspr and mfspr helpers to support this by moving the is_user
check into the helper.
Link: https://raw.githubusercontent.com/openrisc/doc/master/openrisc-arch-1.4-rev0.pdf
Signed-off-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This header is supposed to be private to tcg and in fact
does not need to be included here at all.
Reviewed-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Mark all memory operations that are not already marked with UNALIGN.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
In gen_ldx/gen_stx, the only two locations for memory operations,
mark the operation as either aligned (softmmu) or unaligned
(user-only, as if emulated by the kernel).
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The opposite of MO_UNALN is MO_ALIGN.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Memory operations that are not already aligned, or otherwise
marked up, require addition of ctx->default_tcg_memop_mask.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Case was accidentally dropped in b7a94da955.
Tested-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This list requires a NULL terminator.
Fixes: 16f5396cec ("target/loongarch: Add LSX data type VReg")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230510062405.127260-1-richard.henderson@linaro.org>
Adds the support for AMD EPYC Genoa generation processors. The model
display for the new processor will be EPYC-Genoa.
Adds the following new feature bits on top of the feature bits from
the previous generation EPYC models.
avx512f : AVX-512 Foundation instruction
avx512dq : AVX-512 Doubleword & Quadword Instruction
avx512ifma : AVX-512 Integer Fused Multiply Add instruction
avx512cd : AVX-512 Conflict Detection instruction
avx512bw : AVX-512 Byte and Word Instructions
avx512vl : AVX-512 Vector Length Extension Instructions
avx512vbmi : AVX-512 Vector Byte Manipulation Instruction
avx512_vbmi2 : AVX-512 Additional Vector Byte Manipulation Instruction
gfni : AVX-512 Galois Field New Instructions
avx512_vnni : AVX-512 Vector Neural Network Instructions
avx512_bitalg : AVX-512 Bit Algorithms, add bit algorithms Instructions
avx512_vpopcntdq: AVX-512 AVX-512 Vector Population Count Doubleword and
Quadword Instructions
avx512_bf16 : AVX-512 BFLOAT16 instructions
la57 : 57-bit virtual address support (5-level Page Tables)
vnmi : Virtual NMI (VNMI) allows the hypervisor to inject the NMI
into the guest without using Event Injection mechanism
meaning not required to track the guest NMI and intercepting
the IRET.
auto-ibrs : The AMD Zen4 core supports a new feature called Automatic IBRS.
It is a "set-and-forget" feature that means that, unlike e.g.,
s/w-toggled SPEC_CTRL.IBRS, h/w manages its IBRS mitigation
resources automatically across CPL transitions.
Signed-off-by: Babu Moger <babu.moger@amd.com>
Message-Id: <20230504205313.225073-8-babu.moger@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add the following featute bits.
vnmi: Virtual NMI (VNMI) allows the hypervisor to inject the NMI into the
guest without using Event Injection mechanism meaning not required to
track the guest NMI and intercepting the IRET.
The presence of this feature is indicated via the CPUID function
0x8000000A_EDX[25].
automatic-ibrs :
The AMD Zen4 core supports a new feature called Automatic IBRS.
It is a "set-and-forget" feature that means that, unlike e.g.,
s/w-toggled SPEC_CTRL.IBRS, h/w manages its IBRS mitigation
resources automatically across CPL transitions.
The presence of this feature is indicated via the CPUID function
0x80000021_EAX[8].
The documention for the features are available in the links below.
a. Processor Programming Reference (PPR) for AMD Family 19h Model 01h,
Revision B1 Processors
b. AMD64 Architecture Programmer’s Manual Volumes 1–5 Publication No. Revision
40332 4.05 Date October 2022
Signed-off-by: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Babu Moger <babu.moger@amd.com>
Link: https://www.amd.com/system/files/TechDocs/55898_B1_pub_0.50.zip
Link: https://www.amd.com/system/files/TechDocs/40332_4.05.pdf
Message-Id: <20230504205313.225073-7-babu.moger@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add the following feature bits for EPYC-Milan model and bump the version.
vaes : Vector VAES(ENC|DEC), VAES(ENC|DEC)LAST instruction support
vpclmulqdq : Vector VPCLMULQDQ instruction support
stibp-always-on : Single Thread Indirect Branch Prediction Mode has enhanced
performance and may be left Always on
amd-psfd : Predictive Store Forward Disable
no-nested-data-bp : Processor ignores nested data breakpoints
lfence-always-serializing : LFENCE instruction is always serializing
null-sel-clr-base : Null Selector Clears Base. When this bit is
set, a null segment load clears the segment base
These new features will be added in EPYC-Milan-v2. The "-cpu help" output
after the change will be.
x86 EPYC-Milan (alias configured by machine type)
x86 EPYC-Milan-v1 AMD EPYC-Milan Processor
x86 EPYC-Milan-v2 AMD EPYC-Milan Processor
The documentation for the features are available in the links below.
a. Processor Programming Reference (PPR) for AMD Family 19h Model 01h,
Revision B1 Processors
b. SECURITY ANALYSIS OF AMD PREDICTIVE STORE FORWARDING
c. AMD64 Architecture Programmer’s Manual Volumes 1–5 Publication No. Revision
40332 4.05 Date October 2022
Signed-off-by: Babu Moger <babu.moger@amd.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://www.amd.com/system/files/TechDocs/55898_B1_pub_0.50.zip
Link: https://www.amd.com/system/files/documents/security-analysis-predictive-store-forwarding.pdf
Link: https://www.amd.com/system/files/TechDocs/40332_4.05.pdf
Message-Id: <20230504205313.225073-6-babu.moger@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add the following feature bits.
no-nested-data-bp : Processor ignores nested data breakpoints.
lfence-always-serializing : LFENCE instruction is always serializing.
null-sel-cls-base : Null Selector Clears Base. When this bit is
set, a null segment load clears the segment base.
The documentation for the features are available in the links below.
a. Processor Programming Reference (PPR) for AMD Family 19h Model 01h,
Revision B1 Processors
b. AMD64 Architecture Programmer’s Manual Volumes 1–5 Publication No. Revision
40332 4.05 Date October 2022
Signed-off-by: Babu Moger <babu.moger@amd.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://www.amd.com/system/files/TechDocs/55898_B1_pub_0.50.zip
Link: https://www.amd.com/system/files/TechDocs/40332_4.05.pdf
Message-Id: <20230504205313.225073-5-babu.moger@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add the following feature bits.
amd-psfd : Predictive Store Forwarding Disable:
PSF is a hardware-based micro-architectural optimization
designed to improve the performance of code execution by
predicting address dependencies between loads and stores.
While SSBD (Speculative Store Bypass Disable) disables both
PSF and speculative store bypass, PSFD only disables PSF.
PSFD may be desirable for the software which is concerned
with the speculative behavior of PSF but desires a smaller
performance impact than setting SSBD.
Depends on the following kernel commit:
b73a54321ad8 ("KVM: x86: Expose Predictive Store Forwarding Disable")
stibp-always-on :
Single Thread Indirect Branch Prediction mode has enhanced
performance and may be left always on.
The documentation for the features are available in the links below.
a. Processor Programming Reference (PPR) for AMD Family 19h Model 01h,
Revision B1 Processors
b. SECURITY ANALYSIS OF AMD PREDICTIVE STORE FORWARDING
Signed-off-by: Babu Moger <babu.moger@amd.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://www.amd.com/system/files/documents/security-analysis-predictive-store-forwarding.pdf
Link: https://www.amd.com/system/files/TechDocs/55898_B1_pub_0.50.zip
Message-Id: <20230504205313.225073-4-babu.moger@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Introduce new EPYC cpu versions: EPYC-v4 and EPYC-Rome-v3.
The only difference vs. older models is an updated cache_info with
the 'complex_indexing' bit unset, since this bit is not currently
defined for AMD and may cause problems should it be used for
something else in the future. Setting this bit will also cause
CPUID validation failures when running SEV-SNP guests.
Signed-off-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Babu Moger <babu.moger@amd.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20230504205313.225073-3-babu.moger@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
New EPYC CPUs versions require small changes to their cache_info's.
Because current QEMU x86 CPU definition does not support versioned
cach_info, we would have to declare a new CPU type for each such case.
To avoid the dup work, add "cache_info" in X86CPUVersionDefinition",
to allow new cache_info pointers to be specified for a new CPU version.
Co-developed-by: Wei Huang <wei.huang2@amd.com>
Signed-off-by: Wei Huang <wei.huang2@amd.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Babu Moger <babu.moger@amd.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20230504205313.225073-2-babu.moger@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-45-gaosong@loongson.cn>
Introduce set_fpr() and get_fpr() and remove cpu_fpr.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-44-gaosong@loongson.cn>
This patch includes:
- VLDI.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-43-gaosong@loongson.cn>
This patch includes:
- VFCMP.cond.{S/D}.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-37-gaosong@loongson.cn>
This patch includes:
- VFRSTP[I].{B/H}.
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-33-gaosong@loongson.cn>
This patch includes:
- VPCNT.{B/H/W/D}.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-31-gaosong@loongson.cn>
