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| author |   Sai Praneeth <sai.praneeth.prakhya@intel.com> | 2018-07-11 11:40:34 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2018-07-16 00:43:12 +0200 |
| commit | 5a58bc1b1edc18a9edff606ec99e6f6b723975f4 (patch) | |
| tree | 250e426e45b10c2d1c29aa3e6951fbe4af3caf1b /arch/x86/platform | |
| parent | efi/x86: Clean up the eboot code (diff) | |
| download | wireguard-linux-5a58bc1b1edc18a9edff606ec99e6f6b723975f4.tar.xz wireguard-linux-5a58bc1b1edc18a9edff606ec99e6f6b723975f4.zip | |
efi/x86: Use non-blocking SetVariable() for efi_delete_dummy_variable()
Presently, efi_delete_dummy_variable() uses set_variable() which might
block, which the scheduler is rightfully upset about when used from
the idle thread, producing this splat:
"bad: scheduling from the idle thread!"
So, make efi_delete_dummy_variable() use set_variable_nonblocking(),
which, as the name suggests, doesn't block.
Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180711094040.12506-3-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/platform')
| -rw-r--r-- | arch/x86/platform/efi/quirks.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/x86/platform/efi/quirks.c b/arch/x86/platform/efi/quirks.c index 36c1f8b9f7e0..6af39dc40325 100644 --- a/arch/x86/platform/efi/quirks.c +++ b/arch/x86/platform/efi/quirks.c @@ -105,12 +105,11 @@ early_param("efi_no_storage_paranoia", setup_storage_paranoia); */ void efi_delete_dummy_variable(void) { - efi.set_variable((efi_char16_t *)efi_dummy_name, - &EFI_DUMMY_GUID, - EFI_VARIABLE_NON_VOLATILE | - EFI_VARIABLE_BOOTSERVICE_ACCESS | - EFI_VARIABLE_RUNTIME_ACCESS, - 0, NULL); + efi.set_variable_nonblocking((efi_char16_t *)efi_dummy_name, + &EFI_DUMMY_GUID, + EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, 0, NULL); } /* |