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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-02-06 09:25:56 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-02-06 09:25:56 -0300 |
| commit | ab809efaeba0cca20cfcda23852b0ee958f6ea69 (patch) | |
| tree | 36b168deb9908cba8605bb8fa026bdacc26560db /arch/arm64/include/asm/efi.h | |
| parent | 17f248aa8664ff5b3643491136283e73b5c18166 (diff) | |
| parent | d2d11f342b179f1894a901f143ec7c008caba43e (diff) | |
| download | linux-stable-ab809efaeba0cca20cfcda23852b0ee958f6ea69.tar.gz linux-stable-ab809efaeba0cca20cfcda23852b0ee958f6ea69.tar.bz2 linux-stable-ab809efaeba0cca20cfcda23852b0ee958f6ea69.zip | |
Merge remote-tracking branch 'torvalds/master' into perf/core
To sync with libbpf, etc.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'arch/arm64/include/asm/efi.h')
| -rw-r--r-- | arch/arm64/include/asm/efi.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h index 31d13a6001df..de4ff90785b2 100644 --- a/arch/arm64/include/asm/efi.h +++ b/arch/arm64/include/asm/efi.h @@ -48,8 +48,17 @@ int efi_set_mapping_permissions(struct mm_struct *mm, efi_memory_desc_t *md); }) extern spinlock_t efi_rt_lock; +extern u64 *efi_rt_stack_top; efi_status_t __efi_rt_asm_wrapper(void *, const char *, ...); +/* + * efi_rt_stack_top[-1] contains the value the stack pointer had before + * switching to the EFI runtime stack. + */ +#define current_in_efi() \ + (!preemptible() && efi_rt_stack_top != NULL && \ + on_task_stack(current, READ_ONCE(efi_rt_stack_top[-1]), 1)) + #define ARCH_EFI_IRQ_FLAGS_MASK (PSR_D_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT) /* |