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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-07 13:14:23 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-07 13:14:23 +0000 |
| commit | dcfb98cf8931dc6bce38eff8e1c82972e1adf484 (patch) | |
| tree | 5395e7ca0effa58c164a86740b6470cbb47fe05e /arch/powerpc/include/asm/interrupt.h | |
| parent | Adding upstream version 6.9.8. (diff) | |
| download | linux-upstream/6.9.9.tar.xz linux-upstream/6.9.9.zip | |
Adding upstream version 6.9.9.upstream/6.9.9
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/include/asm/interrupt.h')
| -rw-r--r-- | arch/powerpc/include/asm/interrupt.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/interrupt.h b/arch/powerpc/include/asm/interrupt.h index 7b610864b3..2d6c886b40 100644 --- a/arch/powerpc/include/asm/interrupt.h +++ b/arch/powerpc/include/asm/interrupt.h @@ -336,6 +336,14 @@ static inline void interrupt_nmi_enter_prepare(struct pt_regs *regs, struct inte if (IS_ENABLED(CONFIG_KASAN)) return; + /* + * Likewise, do not use it in real mode if percpu first chunk is not + * embedded. With CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK enabled there + * are chances where percpu allocation can come from vmalloc area. + */ + if (percpu_first_chunk_is_paged) + return; + /* Otherwise, it should be safe to call it */ nmi_enter(); } @@ -351,6 +359,8 @@ static inline void interrupt_nmi_exit_prepare(struct pt_regs *regs, struct inter // no nmi_exit for a pseries hash guest taking a real mode exception } else if (IS_ENABLED(CONFIG_KASAN)) { // no nmi_exit for KASAN in real mode + } else if (percpu_first_chunk_is_paged) { + // no nmi_exit if percpu first chunk is not embedded } else { nmi_exit(); } |