Commit b1d17761 authored Apr 04, 2017 by Baoquan He Committed by Ingo Molnar Apr 05, 2017

x86/efi: Clean up a minor mistake in comment



EFI allocates runtime services regions from EFI_VA_START, -4G, down
to -68G, EFI_VA_END - 64G altogether, top-down.

The mechanism was introduced in commit:

  d2f7cbe7 ("x86/efi: Runtime services virtual mapping")

Fix the comment that still says bottom-up.

Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20170404160245.27812-10-ard.biesheuvel@linaro.org


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent fee929ba

arch/x86/platform/efi/efi_64.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -47,7 +47,7 @@
	#include <asm/pgalloc.h>		#include <asm/pgalloc.h>

	/*		/*
	* We allocate runtime services regions bottom-up, starting from -4G, i.e.		* We allocate runtime services regions top-down, starting from -4G, i.e.
	* 0xffff_ffff_0000_0000 and limit EFI VA mapping space to 64G.		* 0xffff_ffff_0000_0000 and limit EFI VA mapping space to 64G.
	*/		*/
	static u64 efi_va = EFI_VA_START;		static u64 efi_va = EFI_VA_START;