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x86/paravirt: Properly align PV functions

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Ensure inline asm functions are consistently aligned with compiler
generated and SYM_FUNC_START*() functions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20220915111144.038540008@infradead.org
This commit is contained in:
Thomas Gleixner
2022-09-15 13:10:50 +02:00
committed by Peter Zijlstra
parent 1934dc9a8a
commit 1d293758e5
4 changed files with 5 additions and 1 deletions
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1
arch/x86/include/asm/paravirt.h
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@@ -665,6 +665,7 @@ bool __raw_callee_save___native_vcpu_is_preempted(long cpu);
asm(".pushsection " section ", \"ax\";" \
".globl " PV_THUNK_NAME(func) ";" \
".type " PV_THUNK_NAME(func) ", @function;" \
ASM_FUNC_ALIGN \
PV_THUNK_NAME(func) ":" \
ASM_ENDBR \
FRAME_BEGIN \

2
arch/x86/include/asm/qspinlock_paravirt.h
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@@ -40,7 +40,7 @@ __PV_CALLEE_SAVE_REGS_THUNK(__pv_queued_spin_unlock_slowpath, ".spinlock.text");
asm (".pushsection .spinlock.text;"
".globl " PV_UNLOCK ";"
".type " PV_UNLOCK ", @function;"
".align 4,0x90;"
ASM_FUNC_ALIGN
PV_UNLOCK ": "
ASM_ENDBR
FRAME_BEGIN

1
arch/x86/kernel/kvm.c
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@@ -802,6 +802,7 @@ asm(
".pushsection .text;"
".global __raw_callee_save___kvm_vcpu_is_preempted;"
".type __raw_callee_save___kvm_vcpu_is_preempted, @function;"
ASM_FUNC_ALIGN
"__raw_callee_save___kvm_vcpu_is_preempted:"
ASM_ENDBR
"movq __per_cpu_offset(,%rdi,8), %rax;"

2
arch/x86/kernel/paravirt.c
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@@ -40,6 +40,7 @@
extern void _paravirt_nop(void);
asm (".pushsection .entry.text, \"ax\"\n"
".global _paravirt_nop\n"
ASM_FUNC_ALIGN
"_paravirt_nop:\n\t"
ASM_ENDBR
ASM_RET
@@ -50,6 +51,7 @@ asm (".pushsection .entry.text, \"ax\"\n"
/* stub always returning 0. */
asm (".pushsection .entry.text, \"ax\"\n"
".global paravirt_ret0\n"
ASM_FUNC_ALIGN
"paravirt_ret0:\n\t"
ASM_ENDBR
"xor %" _ASM_AX ", %" _ASM_AX ";\n\t"