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x86: __always_inline __{rd,wr}msr()

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[ Upstream commit 66a425011c ]

When the compiler choses to not inline the trivial MSR helpers:

  vmlinux.o: warning: objtool: __sev_es_nmi_complete()+0xce: call to __wrmsr.constprop.14() leaves .noinstr.text section

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Link: https://lore.kernel.org/r/X/bf3gV+BW7kGEsB@hirez.programming.kicks-ass.net
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Peter Zijlstra
2021-01-07 11:14:25 +01:00
committed by Greg Kroah-Hartman
parent d2c880ed2c
commit 5929bcb4a4
1 changed files with 2 additions and 2 deletions
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4
arch/x86/include/asm/msr.h
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@@ -86,7 +86,7 @@ static inline void do_trace_rdpmc(unsigned int msr, u64 val, int failed) {}
* think of extending them - you will be slapped with a stinking trout or a frozen * think of extending them - you will be slapped with a stinking trout or a frozen
* shark will reach you, wherever you are! You've been warned. * shark will reach you, wherever you are! You've been warned.
*/ */
static inline unsigned long long notrace __rdmsr(unsigned int msr) static __always_inline unsigned long long __rdmsr(unsigned int msr)
{ {
DECLARE_ARGS(val, low, high); DECLARE_ARGS(val, low, high);
@@ -98,7 +98,7 @@ static inline unsigned long long notrace __rdmsr(unsigned int msr)
return EAX_EDX_VAL(val, low, high); return EAX_EDX_VAL(val, low, high);
} }
static inline void notrace __wrmsr(unsigned int msr, u32 low, u32 high) static __always_inline void __wrmsr(unsigned int msr, u32 low, u32 high)
{ {
asm volatile("1: wrmsr\n" asm volatile("1: wrmsr\n"
"2:\n" "2:\n"