diff options
| author | Andy Lutomirski <luto@kernel.org> | 2017-11-02 08:59:10 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-11-02 11:04:44 +0100 |
| commit | da51da189a24bb9b7e2d5a123be096e51a4695a5 (patch) | |
| tree | 39b88e6bed96687f02eabe22ed211f7bc78c9c0b /arch/x86/include/asm/paravirt.h | |
| parent | x86/entry/32: Pull the MSR_IA32_SYSENTER_CS update code out of native_load_sp0() (diff) | |
| download | linux-da51da189a24bb9b7e2d5a123be096e51a4695a5.tar.xz linux-da51da189a24bb9b7e2d5a123be096e51a4695a5.zip | |
x86/entry/64: Pass SP0 directly to load_sp0()
load_sp0() had an odd signature:
void load_sp0(struct tss_struct *tss, struct thread_struct *thread);
Simplify it to:
void load_sp0(unsigned long sp0);
Also simplify a few get_cpu()/put_cpu() sequences to
preempt_disable()/preempt_enable().
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
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/2655d8b42ed940aa384fe18ee1129bbbcf730a08.1509609304.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/paravirt.h')
| -rw-r--r-- | arch/x86/include/asm/paravirt.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 12deec722cf0..43d4f90edebc 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -15,10 +15,9 @@ #include <linux/cpumask.h> #include <asm/frame.h> -static inline void load_sp0(struct tss_struct *tss, - struct thread_struct *thread) +static inline void load_sp0(unsigned long sp0) { - PVOP_VCALL2(pv_cpu_ops.load_sp0, tss, thread); + PVOP_VCALL1(pv_cpu_ops.load_sp0, sp0); } /* The paravirtualized CPUID instruction. */ |