diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2020-01-21 09:44:43 +0100 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2020-02-23 21:59:42 +0100 |
| commit | 59f2a619a2db86111e8bb30f349aebff6eb75baa (patch) | |
| tree | dc1aeac5b0479e863dd6feb11960d6680b8d4955 /drivers | |
| parent | 09308012d8546dda75e96c02bed19e2ba1e875fd (diff) | |
| download | linux-59f2a619a2db86111e8bb30f349aebff6eb75baa.tar.bz2 | |
efi: Add 'runtime' pointer to struct efi
Instead of going through the EFI system table each time, just copy the
runtime services table pointer into struct efi directly. This is the
last use of the system table pointer in struct efi, allowing us to
drop it in a future patch, along with a fair amount of quirky handling
of the translated address.
Note that usually, the runtime services pointer changes value during
the call to SetVirtualAddressMap(), so grab the updated value as soon
as that call returns. (Mixed mode uses a 1:1 mapping, and kexec boot
enters with the updated address in the system table, so in those cases,
we don't need to do anything here)
Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/efi/arm-init.c | 1 | ||||
| -rw-r--r-- | drivers/firmware/efi/runtime-wrappers.c | 4 |
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/firmware/efi/arm-init.c b/drivers/firmware/efi/arm-init.c index 5fc2f6813b84..77048f7a9659 100644 --- a/drivers/firmware/efi/arm-init.c +++ b/drivers/firmware/efi/arm-init.c @@ -104,6 +104,7 @@ static int __init uefi_init(void) if (retval) goto out; + efi.runtime = efi.systab->runtime; efi.runtime_version = efi.systab->hdr.revision; efi_systab_report_header(&efi.systab->hdr, diff --git a/drivers/firmware/efi/runtime-wrappers.c b/drivers/firmware/efi/runtime-wrappers.c index 65fffaa22210..1410beaef5c3 100644 --- a/drivers/firmware/efi/runtime-wrappers.c +++ b/drivers/firmware/efi/runtime-wrappers.c @@ -40,9 +40,9 @@ * code doesn't get too cluttered: */ #define efi_call_virt(f, args...) \ - efi_call_virt_pointer(efi.systab->runtime, f, args) + efi_call_virt_pointer(efi.runtime, f, args) #define __efi_call_virt(f, args...) \ - __efi_call_virt_pointer(efi.systab->runtime, f, args) + __efi_call_virt_pointer(efi.runtime, f, args) struct efi_runtime_work efi_rts_work; |