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| author | Julien Thierry <julien.thierry@arm.com> | 2019-01-31 14:58:49 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-02-06 10:05:19 +0000 |
| commit | 13b210ddf474d9f3368766008a89fe82a6f90b48 (patch) | |
| tree | da5655d9ca58bfbd215634df7ec9064242846a8c /include/linux/efi.h | |
| parent | 85738e05dc38a80921e1e1944e5b835f6668fc30 (diff) | |
| download | lwn-13b210ddf474d9f3368766008a89fe82a6f90b48.tar.gz lwn-13b210ddf474d9f3368766008a89fe82a6f90b48.zip | |
efi: Let architectures decide the flags that should be saved/restored
Currently, irqflags are saved before calling runtime services and
checked for mismatch on return.
Provide a pair of overridable macros to save and restore (if needed) the
state that need to be preserved on return from a runtime service.
This allows to check for flags that are not necesarly related to
irqflags.
Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: linux-efi@vger.kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'include/linux/efi.h')
| -rw-r--r-- | include/linux/efi.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/efi.h b/include/linux/efi.h index 45ff763fba76..bd80b7ec35db 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1607,6 +1607,7 @@ efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg, bool efi_runtime_disabled(void); extern void efi_call_virt_check_flags(unsigned long flags, const char *call); +extern unsigned long efi_call_virt_save_flags(void); enum efi_secureboot_mode { efi_secureboot_mode_unset, @@ -1652,7 +1653,7 @@ void efi_retrieve_tpm2_eventlog(efi_system_table_t *sys_table); \ arch_efi_call_virt_setup(); \ \ - local_save_flags(__flags); \ + __flags = efi_call_virt_save_flags(); \ __s = arch_efi_call_virt(p, f, args); \ efi_call_virt_check_flags(__flags, __stringify(f)); \ \ @@ -1667,7 +1668,7 @@ void efi_retrieve_tpm2_eventlog(efi_system_table_t *sys_table); \ arch_efi_call_virt_setup(); \ \ - local_save_flags(__flags); \ + __flags = efi_call_virt_save_flags(); \ arch_efi_call_virt(p, f, args); \ efi_call_virt_check_flags(__flags, __stringify(f)); \ \ |