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| author | Sebastian Andrzej Siewior | 2019-04-03 18:41:51 +0200 |
|---|---|---|
| committer | Borislav Petkov | 2019-04-12 15:41:25 +0200 |
| commit | c2ff9e9a3d9d6c019394a22989a228d02970a8b1 (patch) | |
| tree | 3069365bf511eb5c04beb311ae1b3b730c360891 /arch/x86/kernel/process_64.c | |
| parent | x86/fpu: Restore from kernel memory on the 64-bit path too (diff) | |
| download | kernel-qcow2-linux-c2ff9e9a3d9d6c019394a22989a228d02970a8b1.tar.gz kernel-qcow2-linux-c2ff9e9a3d9d6c019394a22989a228d02970a8b1.tar.xz kernel-qcow2-linux-c2ff9e9a3d9d6c019394a22989a228d02970a8b1.zip | |
x86/fpu: Merge the two code paths in __fpu__restore_sig()
The ia32_fxstate case (32bit with fxsr) and the other (64bit frames or
32bit frames without fxsr) restore both from kernel memory and sanitize
the content.
The !ia32_fxstate version restores missing xstates from "init state"
while the ia32_fxstate doesn't and skips it.
Merge the two code paths and keep the !ia32_fxstate one. Copy only the
user_i387_ia32_struct data structure in the ia32_fxstate.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: kvm ML <kvm@vger.kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190403164156.19645-23-bigeasy@linutronix.de
Diffstat (limited to 'arch/x86/kernel/process_64.c')
0 files changed, 0 insertions, 0 deletions