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| author |   Andy Lutomirski <luto@kernel.org> | 2017-11-02 00:59:09 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2017-11-02 11:04:43 +0100 |
| commit | bd7dc5a6afac719d8ce4092391eef2c7e83c2a75 (patch) | |
| tree | 2ee8471b8b2443be14f0badffe69befd7a76f8d2 /arch/x86/include/asm/paravirt.h | |
| parent | x86/entry/64: De-Xen-ify our NMI code (diff) | |
| download | linux-dev-bd7dc5a6afac719d8ce4092391eef2c7e83c2a75.tar.xz linux-dev-bd7dc5a6afac719d8ce4092391eef2c7e83c2a75.zip | |
x86/entry/32: Pull the MSR_IA32_SYSENTER_CS update code out of native_load_sp0()
This causes the MSR_IA32_SYSENTER_CS write to move out of the
paravirt callback. This shouldn't affect Xen PV: Xen already ignores
MSR_IA32_SYSENTER_ESP writes. In any event, Xen doesn't support
vm86() in a useful way.
Note to any potential backporters: This patch won't break lguest, as
lguest didn't have any SYSENTER support at all.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bpetkov@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/75cf09fe03ae778532d0ca6c65aa58e66bc2f90c.1509609304.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/paravirt.h')
0 files changed, 0 insertions, 0 deletions