Intel introduces XFD faulting mechanism for extended
XSAVE features to dynamically enable the features in
runtime. If CPUID (EAX=0Dh, ECX=n, n>1).ECX[2] is set
as 1, it indicates support for XFD faulting of this
state component.
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20220217060434.52460-5-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Kernel allocates 4K xstate buffer by default. For XSAVE features
which require large state component (e.g. AMX), Linux kernel
dynamically expands the xstate buffer only after the process has
acquired the necessary permissions. Those are called dynamically-
enabled XSAVE features (or dynamic xfeatures).
There are separate permissions for native tasks and guests.
Qemu should request the guest permissions for dynamic xfeatures
which will be exposed to the guest. This only needs to be done
once before the first vcpu is created.
KVM implemented one new ARCH_GET_XCOMP_SUPP system attribute API to
get host side supported_xcr0 and Qemu can decide if it can request
dynamically enabled XSAVE features permission.
https://lore.kernel.org/all/20220126152210.3044876-1-pbonzini@redhat.com/
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Message-Id: <20220217060434.52460-4-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The AMX TILECFG register and the TMMx tile data registers are
saved/restored via XSAVE, respectively in state component 17
(64 bytes) and state component 18 (8192 bytes).
Add AMX feature bits to x86_ext_save_areas array to set
up AMX components. Add structs that define the layout of
AMX XSAVE areas and use QEMU_BUILD_BUG_ON to validate the
structs sizes.
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20220217060434.52460-3-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The extended state subleaves (EAX=0Dh, ECX=n, n>1).ECX[1]
indicate whether the extended state component locates
on the next 64-byte boundary following the preceding state
component when the compacted format of an XSAVE area is
used.
Right now, they are all zero because no supported component
needed the bit to be set, but the upcoming AMX feature will
use it. Fix the subleaves value according to KVM's supported
cpuid.
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20220217060434.52460-2-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Loading a non-canonical address into rsp when handling an interrupt or
performing a far call should raise a #SS not a #GP.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/870
Signed-off-by: Gareth Webb <gareth.webb@umbralsoftware.co.uk>
Message-Id: <164529651121.25406.15337137068584246397-0@git.sr.ht>
[Move get_pg_mode to seg_helper.c for user-mode emulators. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
LA57/PKE/PKS is only relevant in 64-bit mode, and NXE is only relevant if
PAE is in use. Since there is code that checks PG_MODE_LA57 to determine
the canonicality of addresses, make sure that the bit is not set by
mistake in 32-bit mode. While it would not be a problem because 32-bit
addresses by definition fit in both 48-bit and 57-bit address spaces,
it is nicer if get_pg_mode() actually returns whether a feature is enabled,
and it allows a few simplifications in the page table walker.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We invoke the kvm_irqchip_commit_routes() for each addition to MSI route
table, which is not efficient if we are adding lots of routes in some cases.
This patch lets callers invoke the kvm_irqchip_commit_routes(), so the
callers can decide how to optimize.
[1] https://lists.gnu.org/archive/html/qemu-devel/2021-11/msg00967.html
Signed-off-by: Longpeng <longpeng2@huawei.com>
Message-Id: <20220222141116.2091-3-longpeng2@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This fixes the following error triggered when stopping and resuming a 64-bit
Linux kernel via gdb:
qemu-system-x86_64.exe: WHPX: Failed to set virtual processor context, hr=c0350005
The previous logic for synchronizing the values did not take into account
that the lower 4 bits of the CR8 register, containing the priority level,
mapped to bits 7:4 of the APIC.TPR register (see section 10.8.6.1 of
Volume 3 of Intel 64 and IA-32 Architectures Software Developer's Manual).
The caused WHvSetVirtualProcessorRegisters() to fail with an error,
effectively preventing GDB from changing the guest context.
Signed-off-by: Ivan Shcherbakov <ivan@sysprogs.com>
Message-Id: <010b01d82874$bb4ef160$31ecd420$@sysprogs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Make sure that pausing the VM while in 64-bit mode will set the
HF_CS64_MASK flag in env->hflags (see x86_update_hflags() in
target/i386/cpu.c).
Without it, the code in gdbstub.c would only use the 32-bit register values
when debugging 64-bit targets, making debugging effectively impossible.
Signed-off-by: Ivan Shcherbakov <ivan@sysprogs.com>
Message-Id: <00f701d82874$68b02000$3a106000$@sysprogs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When building with clang version 13.0.0 (eg. Fedora 13.0.0-3.fc35),
two unused variables introduced by macro GATHER_FUNCTION and
SCATTER_FUNCTION will cause building process failure due to
[-Werror -Wunused-variable].
Signed-off-by: Zongyuan Li <zongyuan.li@smartx.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/831
Message-Id: <20220124064339.56027-1-zongyuan.li@smartx.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
On Hexagon, c4 is an alias for predicate registers P3:0. If we assign to
c4 inside a packet with reads from predicate registers, the predicate
reads should get the old values.
Test case added to tests/tcg/hexagon/preg_alias.c
Co-authored-by: Michael Lambert <mlambert@cuicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-13-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Fix typo that checked for 32 bit nan instead of 64 bit
Test case added in tests/tcg/hexagon/usr.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-11-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
The float??_minnum implementation differs from Hexagon for SNaN,
it returns NaN, but Hexagon returns the other input. So, we use
float??_minimum_number.
Test cases added to tests/tcg/hexagon/fpstuff.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220308190410.22355-1-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
The arch_sf_recip_common function was calling float32_getexp which
adjusts for denorm, but the we actually need the raw exponent bits.
This function is called from 3 instructions
sfrecipa
sffixupn
sffixupd
Test cases added to tests/tcg/hexagon/fpstuff.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-6-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Instead of checking for nan arguments, use float??_unordered_quiet
test cases added in a subsequent patch to more extensively test USR bits
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-4-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Versions V3 and earlier should treat the "K_const" and "length" values
as unsigned.
Modified circ_test_v3() in tests/tcg/hexagon/circ.c to reproduce the bug
Signed-off-by: Michael Lambert <mlambert@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220210021556.9217-2-tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* cleanups of qemu_oom_check() and qemu_memalign()
* target/arm/translate-neon: UNDEF if VLD1/VST1 stride bits are non-zero
* target/arm/translate-neon: Simplify align field check for VLD3
* GICv3 ITS: add more trace events
* GICv3 ITS: implement 8-byte accesses properly
* GICv3: fix minor issues with some trace/log messages
* ui/cocoa: Use the standard about panel
* target/arm: Provide cpu property for controling FEAT_LPA2
* hw/arm/virt: Disable LPA2 for -machine virt-6.2
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20220307' into staging
target-arm queue:
* cleanups of qemu_oom_check() and qemu_memalign()
* target/arm/translate-neon: UNDEF if VLD1/VST1 stride bits are non-zero
* target/arm/translate-neon: Simplify align field check for VLD3
* GICv3 ITS: add more trace events
* GICv3 ITS: implement 8-byte accesses properly
* GICv3: fix minor issues with some trace/log messages
* ui/cocoa: Use the standard about panel
* target/arm: Provide cpu property for controling FEAT_LPA2
* hw/arm/virt: Disable LPA2 for -machine virt-6.2
# gpg: Signature made Mon 07 Mar 2022 16:46:06 GMT
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20220307:
hw/arm/virt: Disable LPA2 for -machine virt-6.2
target/arm: Provide cpu property for controling FEAT_LPA2
ui/cocoa: Use the standard about panel
hw/intc/arm_gicv3_cpuif: Fix register names in ICV_HPPIR read trace event
hw/intc/arm_gicv3: Fix missing spaces in error log messages
hw/intc/arm_gicv3: Specify valid and impl in MemoryRegionOps
hw/intc/arm_gicv3_its: Add trace events for table reads and writes
hw/intc/arm_gicv3_its: Add trace events for commands
target/arm/translate-neon: Simplify align field check for VLD3
target/arm/translate-neon: UNDEF if VLD1/VST1 stride bits are non-zero
osdep: Move memalign-related functions to their own header
util: Put qemu_vfree() in memalign.c
util: Use meson checks for valloc() and memalign() presence
util: Share qemu_try_memalign() implementation between POSIX and Windows
meson.build: Don't misdetect posix_memalign() on Windows
util: Return valid allocation for qemu_try_memalign() with zero size
util: Unify implementations of qemu_memalign()
util: Make qemu_oom_check() a static function
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Since the previous commit 9ea89876f9d ("target/mips: Fix cycle
counter timing calculations"), MIPSCPU::cp0_count_rate is not
used anymore. We don't need it since it is already expressed
as mips_def_t::CCRes. Remove the duplicate and clean.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <>20211213102340.1847248-1-f4bug@amsat.org>
The cp0_count_ns value is calculated from the CP0_COUNT_RATE_DEFAULT
constant in target/mips/cpu.c. The cycle counter resolution is defined
per-CPU in target/mips/cpu-defs.c.inc; use this value for calculating
cp0_count_ns. Fixings timing problems on guest OSs for the 20Kc CPU
which has a CCRes of 1.
Signed-off-by: Simon Burge <simonb@NetBSD.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211213135125.18378-1-simonb@NetBSD.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
There is a Linux kernel bug present until v5.12 that prevents
booting with FEAT_LPA2 enabled. As a workaround for TCG, allow
the feature to be disabled from -cpu max.
Since this kernel bug is present in the Fedora 31 image that
we test in avocado, disable lpa2 on the command-line.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For VLD3 (single 3-element structure to one lane), there is no
alignment specification and the alignment bits in the instruction
must be zero. This is bit [4] for the size=0 and size=1 cases, and
bits [5:4] for the size=2 case. We do this check correctly in
VLDST_single(), but we write it a bit oddly: in the 'case 3' code we
check for bit 0 of a->align (bit [4] of the insn), and then we fall
through to the 'case 2' code which checks bit 1 of a->align (bit [5]
of the insn) in the size 2 case. Replace this with just checking "is
a->align non-zero" for VLD3, which lets us drop the fall-through and
put the cases in this switch in numerical order.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220303113741.2156877-3-peter.maydell@linaro.org
For VLD1/VST1 (single element to one lane) we are only accessing one
register, and so the 'stride' is meaningless. The bits that would
specify stride (insn bit [4] for size=1, bit [6] for size=2) are
specified to be zero in the encoding (which would correspond to a
stride of 1 for VLD2/VLD3/VLD4 etc), and we must UNDEF if they are
not.
We failed to make this check, which meant that we would incorrectly
handle some instruction patterns as loads or stores instead of
UNDEFing them. Enforce that stride == 1 for the nregs == 1 case.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/890
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220303113741.2156877-2-peter.maydell@linaro.org
Move the various memalign-related functions out of osdep.h and into
their own header, which we include only where they are used.
While we're doing this, add some brief documentation comments.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20220226180723.1706285-10-peter.maydell@linaro.org
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220305233415.64627-3-philippe.mathieu.daude@gmail.com>
ArchCPU is our interface with target-specific code. Use it as
a forward-declared opaque pointer (abstract type), having its
structure defined by each target.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-15-f4bug@amsat.org>
Replace the boilerplate code to declare CPU QOM types
and macros, and forward-declare the CPU instance type.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-14-f4bug@amsat.org>
While CPUState is our interface with generic code, CPUArchState is
our interface with target-specific code. Use CPUArchState as an
abstract type, defined by each target.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-13-f4bug@amsat.org>
HexagonCPU field parent_class is of type CPUClass, which
is declared in "hw/core/cpu.h".
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-11-f4bug@amsat.org>
These target-specific files use the target-specific CPU state
but lack to include "cpu.h"; i.e.:
../target/riscv/pmp.h:61:23: error: unknown type name 'CPURISCVState'
void pmpcfg_csr_write(CPURISCVState *env, uint32_t reg_index,
^
../target/nios2/mmu.h:43:18: error: unknown type name 'CPUNios2State'
void mmu_flip_um(CPUNios2State *env, unsigned int um);
^
../target/microblaze/mmu.h:88:19: error: unknown type name 'CPUMBState'; did you mean 'CPUState'?
uint32_t mmu_read(CPUMBState *env, bool ea, uint32_t rn);
^~~~~~~~~~
CPUState
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-10-f4bug@amsat.org>
excp_helper.c requires "exec/exec-all.h" for tlb_set_page_with_attrs()
and misc_helper.c for tlb_flush().
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220214183144.27402-8-f4bug@amsat.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220207075426.81934-18-f4bug@amsat.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220207075426.81934-17-f4bug@amsat.org>
Add cpu_thread_is_idle() to AccelOps, and implement it for the
KVM / WHPX accelerators.
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220207075426.81934-11-f4bug@amsat.org>
Mirror "sysemu/kvm.h" #ifdef'ry to define CONFIG_HAX_IS_POSSIBLE,
expose hax_allowed to hax_enabled() macro.
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220207075426.81934-9-f4bug@amsat.org>
Some ISA v2.03 Vector Multiply instructions marked to be ISA v2.07 only.
This patch fixes it.
Fixes: 80eca687c8 ("target/ppc: moved vector even and odd multiplication to decodetree")
Reported-by: Howard Spoelstra <hsp.cat7@gmail.com>
Suggested-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220304175156.2012315-2-matheus.ferst@eldorado.org.br>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Change VSX Scalar Multiply-Add/Subtract Type-A/M Single Precision
helpers to use float64r32_muladd. This method should correctly handle
all rounding modes, so the workaround for float_round_nearest_even can
be dropped.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20220304165417.1981159-3-matheus.ferst@eldorado.org.br>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
* Fixup checks for ext_zb[abcs]
* Add AIA support for virt machine
* Increase maximum number of CPUs in virt machine
* Fixup OpenTitan SPI address
* Add support for zfinx, zdinx and zhinx{min} extensions
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Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20220303' into staging
Fifth RISC-V PR for QEMU 7.0
* Fixup checks for ext_zb[abcs]
* Add AIA support for virt machine
* Increase maximum number of CPUs in virt machine
* Fixup OpenTitan SPI address
* Add support for zfinx, zdinx and zhinx{min} extensions
# gpg: Signature made Thu 03 Mar 2022 05:26:55 GMT
# gpg: using RSA key F6C4AC46D4934868D3B8CE8F21E10D29DF977054
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [full]
# Primary key fingerprint: F6C4 AC46 D493 4868 D3B8 CE8F 21E1 0D29 DF97 7054
* remotes/alistair/tags/pull-riscv-to-apply-20220303:
target/riscv: expose zfinx, zdinx, zhinx{min} properties
target/riscv: add support for zhinx/zhinxmin
target/riscv: add support for zdinx
target/riscv: add support for zfinx
target/riscv: hardwire mstatus.FS to zero when enable zfinx
target/riscv: add cfg properties for zfinx, zdinx and zhinx{min}
hw: riscv: opentitan: fixup SPI addresses
hw/riscv: virt: Increase maximum number of allowed CPUs
docs/system: riscv: Document AIA options for virt machine
hw/riscv: virt: Add optional AIA IMSIC support to virt machine
hw/intc: Add RISC-V AIA IMSIC device emulation
hw/riscv: virt: Add optional AIA APLIC support to virt machine
target/riscv: fix inverted checks for ext_zb[abcs]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Previously, we would avoid setting CPU_INTERRUPT_HARD when interrupts
are disabled at a particular point in time, instead queuing the value
into cpu->irq_pending. This is more complicated than required.
Instead, set CPU_INTERRUPT_HARD any time there is a pending interrupt,
and exclusively check for interrupts disabled in nios2_cpu_exec_interrupt.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
It was never correct to be able to write to ipending.
Until the rest of the irq code is tidied, the read of
ipending will generate an "unnecessary" mask.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
