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linux-stable/arch/x86/kernel
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Feng Tang 97640d8e2c x86/fpu: Set X86_FEATURE_OSXSAVE feature after enabling OSXSAVE in CR4 
commit 2c66ca3949 upstream.

0-Day found a 34.6% regression in stress-ng's 'af-alg' test case, and
bisected it to commit b81fac906a ("x86/fpu: Move FPU initialization into
arch_cpu_finalize_init()"), which optimizes the FPU init order, and moves
the CR4_OSXSAVE enabling into a later place:

   arch_cpu_finalize_init
       identify_boot_cpu
	   identify_cpu
	       generic_identify
                   get_cpu_cap --> setup cpu capability
       ...
       fpu__init_cpu
           fpu__init_cpu_xstate
               cr4_set_bits(X86_CR4_OSXSAVE);

As the FPU is not yet initialized the CPU capability setup fails to set
X86_FEATURE_OSXSAVE. Many security module like 'camellia_aesni_avx_x86_64'
depend on this feature and therefore fail to load, causing the regression.

Cure this by setting X86_FEATURE_OSXSAVE feature right after OSXSAVE
enabling.

[ tglx: Moved it into the actual BSP FPU initialization code and added a comment ]

Fixes: b81fac906a ("x86/fpu: Move FPU initialization into arch_cpu_finalize_init()")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/lkml/202307192135.203ac24e-oliver.sang@intel.com
Link: https://lore.kernel.org/lkml/20230823065747.92257-1-feng.tang@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-30 16:27:26 +02:00
..
acpi ACPI / x86: Work around broken XSDT on Advantech DAC-BJ01 board 2022-03-28 08:46:47 +02:00
apic x86/apic: Fix kernel panic when booting with intremap=off and x2apic_phys 2023-06-28 10:18:42 +02:00
cpu x86/cpu/amd: Enable Zenbleed fix for AMD Custom APU 0405 2023-08-16 18:19:23 +02:00
fpu x86/fpu: Set X86_FEATURE_OSXSAVE feature after enabling OSXSAVE in CR4 2023-08-30 16:27:26 +02:00
kprobes x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range 2023-03-11 16:44:02 +01:00
.gitignore
alternative.c x86: Correct misc typos 2019-09-02 14:02:59 +02:00
amd_gart_64.c dma-mapping: provide a better default ->get_required_mask 2019-09-04 11:13:19 +02:00
amd_nb.c x86/amd_nb: Add AMD family 17h model 60h PCI IDs 2020-06-22 09:31:17 +02:00
apb_timer.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
aperture_64.c
apm_32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
asm-offsets.c x86/paravirt: Make read_cr2() CALLEE_SAVE 2019-07-17 23:17:37 +02:00
asm-offsets_32.c
asm-offsets_64.c Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-09-17 12:04:39 -07:00
audit_64.c
bootflag.c
check.c
cpuid.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 142 2019-05-30 11:25:17 -07:00
crash.c x86/crash: Disable virt in core NMI crash handler to avoid double shootdown 2023-03-11 16:44:01 +01:00
crash_dump_32.c
crash_dump_64.c fs/core/vmcore: Move sev_active() reference to x86 arch code 2019-08-09 22:52:10 +10:00
devicetree.c
doublefault.c x86/doublefault/32: Fix stack canaries in the double fault handler 2019-11-29 10:09:51 +01:00
dumpstack.c x86/show_trace_log_lvl: Ensure stack pointer is aligned, again 2023-05-30 12:44:10 +01:00
dumpstack_32.c
dumpstack_64.c x86/dumpstack/64: Don't evaluate exception stacks before setup 2019-11-05 00:51:35 +01:00
e820.c x86/e820: Use proper booleans instead of 0/1 2019-07-16 23:13:49 +02:00
early-quirks.c x86/gpu: Reserve stolen memory for first integrated Intel GPU 2022-01-27 09:19:26 +01:00
early_printk.c
ebda.c
eisa.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 243 2019-06-19 17:09:07 +02:00
espfix_64.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
ftrace.c The main changes in this release include: 2019-07-18 11:51:00 -07:00
ftrace_32.S x86/asm/32: Add ENDs to some functions and relabel with SYM_CODE_* 2021-01-17 14:05:30 +01:00
ftrace_64.S x86/stackframe, x86/ftrace: Add pt_regs frame annotations 2019-06-25 10:23:47 +02:00
head32.c
head64.c x86: Clear .brk area at early boot 2022-07-21 20:59:27 +02:00
head_32.S x86/asm/32: Add ENDs to some functions and relabel with SYM_CODE_* 2021-01-17 14:05:30 +01:00
head_64.S x86/irq/64: Update stale comment 2019-07-22 10:54:27 +02:00
hpet.c x86/hpet: Use another crystalball to evaluate HPET usability 2021-10-13 10:08:21 +02:00
hw_breakpoint.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
i8237.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
i8253.c x86/timer: Skip PIT initialization on modern chipsets 2019-06-29 11:35:35 +02:00
i8259.c x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL 2023-02-06 07:52:47 +01:00
idt.c x86/idt: Keep spurious entries unset in system_vectors 2020-06-24 17:50:43 +02:00
ima_arch.c x86/ima: use correct identifier for SetupMode variable 2020-02-28 17:22:18 +01:00
io_delay.c x86/io_delay: Define IO_DELAY macros in C instead of Kconfig 2019-05-24 08:46:06 +02:00
ioport.c x86: Lock down IO port access when the kernel is locked down 2019-08-19 21:54:16 -07:00
irq.c x86/irq: Ensure PI wakeup handler is unregistered before module unload 2021-11-17 09:48:19 +01:00
irq_32.c x86/irq: Move IS_ERR_OR_NULL() check into common do_IRQ() code 2019-08-19 23:19:06 +02:00
irq_64.c x86: fix vmap arguments in map_irq_stack 2020-06-22 09:30:57 +02:00
irq_work.c
irqflags.S
irqinit.c x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL 2023-02-06 07:52:47 +01:00
itmt.c proc/sysctl: add shared variables for range check 2019-07-18 17:08:07 -07:00
jailhouse.c x86: Add "nopv" parameter to disable PV extensions 2019-07-17 08:09:58 +02:00
jump_label.c x86/jump_label: Make tp_vec_nr static 2019-06-25 09:22:14 +02:00
kdebugfs.c Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
kexec-bzimage64.c x86/kexec: Use up-to-dated screen_info copy to fill boot params 2020-11-10 12:37:29 +01:00
kgdb.c x86/apic: Provide and use helper for send_IPI_allbutself() 2019-07-25 16:12:00 +02:00
ksysfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
kvm.c x86/kvm: Preserve BSP MSR_KVM_POLL_CONTROL across suspend/resume 2022-05-12 12:23:47 +02:00
kvmclock.c x86/kvmclock: Move this_cpu_pvti into kvmclock.h 2021-10-06 15:42:31 +02:00
ldt.c
livepatch.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
machine_kexec_32.c x86/mm: Remove set_pages_x() and set_pages_nx() 2019-09-03 09:26:37 +02:00
machine_kexec_64.c Merge branch 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-07-09 11:52:34 -07:00
Makefile Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-07-08 17:34:44 -07:00
mmconf-fam10h_64.c
module.c x86/build: Treat R_386_PLT32 relocation as R_386_PC32 2021-03-07 12:20:45 +01:00
mpparse.c x86/boot: Fix memory leak in default_get_smp_config() 2019-07-16 23:13:48 +02:00
msr.c x86/msr: Restrict MSR access when the kernel is locked down 2019-08-19 21:54:16 -07:00
nmi.c x86/nmi: Fix nmi_handle() duration miscalculation 2020-10-29 09:57:30 +01:00
nmi_selftest.c
paravirt-spinlocks.c
paravirt.c x86/paravirt: Drop {read,write}_cr8() hooks 2019-07-22 10:12:33 +02:00
paravirt_patch.c
pci-calgary_64.c dma-mapping: explicitly wire up ->mmap and ->get_sgtable 2019-09-04 11:13:18 +02:00
pci-dma.c x86/dma: Get rid of iommu_pass_through 2019-08-23 10:11:01 +02:00
pci-iommu_table.c
pci-swiotlb.c dma-mapping: fix filename references 2019-09-03 08:36:30 +02:00
pcspeaker.c
perf_regs.c perf/x86/regs: Check reserved bits 2019-06-24 19:19:24 +02:00
platform-quirks.c
pmem.c x86/pmem: Fix platform-device leak in error path 2022-08-25 11:17:33 +02:00
probe_roms.c
process.c x86/bugs: Make sure MSR_SPEC_CTRL is updated properly upon resume from S3 2022-12-08 11:23:04 +01:00
process.h x86: Use the correct SPDX License Identifier in headers 2019-10-01 20:31:35 +02:00
process_32.c x86/resctl: fix scheduler confusion with 'current' 2023-03-11 16:44:16 +01:00
process_64.c x86/resctl: fix scheduler confusion with 'current' 2023-03-11 16:44:16 +01:00
ptrace.c x86/ptrace: Mark expected switch fall-through 2019-08-07 15:12:01 +02:00
pvclock.c x86/vdso: Switch to generic vDSO implementation 2019-06-22 21:21:10 +02:00
quirks.c treewide: Remove uninitialized_var() usage 2023-06-09 10:29:01 +02:00
reboot.c x86/reboot: Disable virtualization in an emergency if SVM is supported 2023-03-11 16:44:01 +01:00
reboot_fixups_32.c
relocate_kernel_32.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
relocate_kernel_64.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
resource.c
rtc.c
setup.c ACPI: x86: Call acpi_boot_table_init() after acpi_table_upgrade() 2021-05-07 10:51:37 +02:00
setup_percpu.c
signal.c x86/signal: Detect and prevent an alternate signal stack overflow 2021-07-20 16:10:49 +02:00
signal_compat.c
smp.c x86/reboot: Disable SVM, not just VMX, when stopping CPUs 2023-03-11 16:44:01 +01:00
smpboot.c x86/fpu: Move FPU initialization into arch_cpu_finalize_init() 2023-08-08 19:56:35 +02:00
stacktrace.c x86/stacktrace: Fix reliable check for empty user task stacks 2020-08-05 09:59:51 +02:00
step.c ptrace: Reimplement PTRACE_KILL by always sending SIGKILL 2022-06-14 18:11:24 +02:00
sys_x86_64.c x86/mm: Cleanup the control_va_addr_alignment() __setup handler 2022-06-14 18:11:35 +02:00
sysfb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sysfb_efi.c efi: sysfb_efi: Add quirk for Lenovo Yoga Book X91F/L 2023-04-20 12:07:36 +02:00
sysfb_simplefb.c x86/sysfb: Fix check for bad VRAM size 2020-02-24 08:36:29 +01:00
tboot.c iommu/vt-d: Avoid panic if iommu init fails in tboot system 2020-11-24 13:29:17 +01:00
tce_64.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
time.c x86_64: Fix jiffies ODR violation 2020-06-17 16:40:24 +02:00
tls.c x86/tls: Fix possible spectre-v1 in do_get_thread_area() 2019-06-27 23:48:04 +02:00
tls.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 193 2019-05-30 11:29:21 -07:00
topology.c
trace_clock.c
tracepoint.c
traps.c x86/mm, tracing: Fix CR2 corruption 2019-07-17 23:17:38 +02:00
tsc.c x86/tsc: Disable clocksource watchdog for TSC on qualified platorms 2021-12-08 09:01:14 +01:00
tsc_msr.c x86/tsr: Fix tsc frequency enumeration bug on Lightning Mountain SoC 2020-08-21 13:05:36 +02:00
tsc_sync.c x86/tsc: Add a timer to make sure TSC_adjust is always checked 2021-12-08 09:01:14 +01:00
umip.c x86/umip: Add emulation (spoofing) for UMIP covered instructions in 64-bit processes as well 2019-09-10 08:36:16 +02:00
unwind_frame.c x86/stackframe/32: Provide consistent pt_regs 2019-06-25 10:23:47 +02:00
unwind_guess.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
unwind_orc.c x86/unwind/orc: Fix unreliable stack dump with gcov 2022-11-03 23:56:55 +09:00
uprobes.c uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix 2023-01-18 11:40:57 +01:00
verify_cpu.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
vm86_32.c signal: Remove task parameter from force_sig 2019-05-27 09:36:28 -05:00
vmlinux.lds.S x86, vmlinux.lds: Add RUNTIME_DISCARD_EXIT to generic DISCARDS 2023-03-17 08:32:53 +01:00
vsmp_64.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 346 2019-06-05 17:37:08 +02:00
x86_init.c x86/timer: Don't skip PIT setup when APIC is disabled or in legacy mode 2020-02-11 04:35:52 -08:00