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| author | Thomas Gleixner <tglx@linutronix.de> | 2022-09-15 14:10:50 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-10-17 17:40:59 +0300 |
| commit | 1d293758e548aa6ff65e4dd3f5a9bc2a34b38ce3 (patch) | |
| tree | b11599591dda098388b26fe07291e5cef69064f8 | |
| parent | 1934dc9a8a92fda36ab80cfd55edab1708dcdf9a (diff) | |
| download | linux-1d293758e548aa6ff65e4dd3f5a9bc2a34b38ce3.tar.xz | |
x86/paravirt: Properly align PV functions
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
| -rw-r--r-- | arch/x86/include/asm/paravirt.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/qspinlock_paravirt.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/kvm.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/paravirt.c | 2 |
4 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 2a0b8dd4ec33..1be66c15ecbd 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -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 \ diff --git a/arch/x86/include/asm/qspinlock_paravirt.h b/arch/x86/include/asm/qspinlock_paravirt.h index 60ece592b220..082551b3c75e 100644 --- a/arch/x86/include/asm/qspinlock_paravirt.h +++ b/arch/x86/include/asm/qspinlock_paravirt.h @@ -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 diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index d4e48b4a438b..95fb85bea111 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -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;" diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 7ca2d46c08cc..e244c49b52d7 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -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" |