* Please revert 7212e37cbdf9 from 4.4-stable
@ 2019-03-11 13:48 Hedi Berriche
2019-03-12 0:29 ` Sasha Levin
0 siblings, 1 reply; 2+ messages in thread
From: Hedi Berriche @ 2019-03-11 13:48 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: linux-kernel, stable, Hedi Berriche, Borislav Petkov,
Ard Biesheuvel, Russ Anderson, Dimitri Sivanich, Steve Wahl,
Mike Travis, Andy Shevchenko, Bhupesh Sharma, Darren Hart,
H. Peter Anvin, Ingo Molnar, linux-efi, platform-driver-x86,
Thomas Gleixner, x86-ml
Hi Greg,
Could you please revert
7212e37cbdf9 x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls
from 4.4-stable?
In 4.4-stable efi_runtime_lock as defined in drivers/firmware/efi/runtime-wrappers.c
is a spinlock (given it predates commit dce48e351c0d) and commit
f331e766c4be x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls
which 7212e37cbdf9 is a backport of, needs it to be a semaphore.
Cheers,
Hedi.
--
Be careful of reading health books, you might die of a misprint.
-- Mark Twain
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Please revert 7212e37cbdf9 from 4.4-stable
2019-03-11 13:48 Please revert 7212e37cbdf9 from 4.4-stable Hedi Berriche
@ 2019-03-12 0:29 ` Sasha Levin
0 siblings, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2019-03-12 0:29 UTC (permalink / raw)
To: Greg Kroah-Hartman, linux-kernel, stable, Borislav Petkov,
Ard Biesheuvel, Russ Anderson, Dimitri Sivanich, Steve Wahl,
Mike Travis, Andy Shevchenko, Bhupesh Sharma, Darren Hart,
H. Peter Anvin, Ingo Molnar, linux-efi, platform-driver-x86,
Thomas Gleixner, x86-ml
On Mon, Mar 11, 2019 at 01:48:14PM +0000, Hedi Berriche wrote:
>Hi Greg,
>
>Could you please revert
>
> 7212e37cbdf9 x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls
>
>from 4.4-stable?
>
>In 4.4-stable efi_runtime_lock as defined in drivers/firmware/efi/runtime-wrappers.c
>is a spinlock (given it predates commit dce48e351c0d) and commit
>
> f331e766c4be x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls
>
>which 7212e37cbdf9 is a backport of, needs it to be a semaphore.
I've queued up the revert. I'm not sure how it ended up on 4.4 to begin
with; sorry about that and thank you.
--
Thanks,
Sasha
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2019-03-11 13:48 Please revert 7212e37cbdf9 from 4.4-stable Hedi Berriche
2019-03-12 0:29 ` Sasha Levin
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