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linux-stable/arch/x86
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Thomas Gleixner 1d9bffab11 x86/fpu: Move FXSAVE_LEAK quirk info __copy_kernel_to_fpregs() 
copy_kernel_to_fpregs() restores all xfeatures but it is also the place
where the AMD FXSAVE_LEAK bug is handled.

That prevents fpregs_restore_userregs() to limit the restored features,
which is required to untangle PKRU and XSTATE handling and also for the
upcoming supervisor state management.

Move the FXSAVE_LEAK quirk into __copy_kernel_to_fpregs() and deinline that
function which has become rather fat.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210623121456.114271278@linutronix.de
2021-06-23 19:26:37 +02:00
..
boot x86/boot/compressed: Enable -Wundef 2021-05-12 21:39:56 +02:00
configs
crypto Objtool updates in this cycle were: 2021-04-28 12:53:24 -07:00
entry quota: Disable quotactl_path syscall 2021-05-17 14:39:56 +02:00
events x86/fpu/xstate: Sanitize handling of independent features 2021-06-23 18:46:20 +02:00
hyperv The x86 MM changes in this cycle were: 2021-04-29 11:41:43 -07:00
ia32
include x86/fpu: Move FXSAVE_LEAK quirk info __copy_kernel_to_fpregs() 2021-06-23 19:26:37 +02:00
kernel x86/fpu: Move FXSAVE_LEAK quirk info __copy_kernel_to_fpregs() 2021-06-23 19:26:37 +02:00
kvm x86/pkeys: Move read_pkru() and write_pkru() 2021-06-23 18:52:57 +02:00
lib - turn the stack canary into a normal __percpu variable on 32-bit which 2021-04-27 17:45:09 -07:00
math-emu x86/math-emu: Rename frstor() 2021-06-23 18:16:33 +02:00
mm x86/fpu: Use pkru_write_default() in copy_init_fpstate_to_fpregs() 2021-06-23 19:15:16 +02:00
net Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
pci pci-v5.13-fixes-2 2021-06-18 13:54:11 -07:00
platform x86/setup: Always reserve the first 1M of RAM 2021-06-03 19:57:55 +02:00
power - turn the stack canary into a normal __percpu variable on 32-bit which 2021-04-27 17:45:09 -07:00
purgatory
ras
realmode x86/setup: Always reserve the first 1M of RAM 2021-06-03 19:57:55 +02:00
tools x86/tools/insn_sanity: Convert to insn_decode() 2021-03-15 12:21:11 +01:00
um um: elf.h: Fix W=1 warning for empty body in 'do' statement 2021-04-15 23:10:50 +02:00
video
xen x86/Xen: swap NX determination and GDT setup on BSP 2021-05-21 09:53:52 +02:00
.gitignore
Kbuild
Kconfig x86/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE 2021-05-05 11:27:27 -07:00
Kconfig.assembler
Kconfig.cpu
Kconfig.debug
Makefile x86, lto: Pass -stack-alignment only on LLD < 13.0.0 2021-06-11 10:33:45 -07:00
Makefile.um
Makefile_32.cpu