From: Semen Protsenko semen.protsenko@linaro.org
"efi" global data structure contains "runtime_version" field which must be assigned in order to use it later in Runtime Services virtual calls (virt_efi_* functions).
Before this patch "runtime_version" was unassigned (0), so each Runtime Service virtual call that checks revision would fail.
Signed-off-by: Semen Protsenko semen.protsenko@linaro.org Acked-by: Ard Biesheuvel ard.biesheuvel@linaro.org Cc: stable@vger.kernel.org Signed-off-by: Matt Fleming matt.fleming@intel.com --- arch/arm64/kernel/efi.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index 865fdf5c7344..219a59f2ae97 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -455,6 +455,8 @@ static int __init arm64_enter_virtual_mode(void) efi_native_runtime_setup(); set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
+ efi.runtime_version = efi.systab->hdr.revision; + return 0;
err_unmap: