This is a note to let you know that I've just added the patch titled
x86/efi: Fix kernel param add_efi_memmap regression
to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: x86-efi-fix-kernel-param-add_efi_memmap-regression.patch and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Wed Feb 28 16:23:28 CET 2018
From: Dave Young dyoung@redhat.com Date: Tue, 2 Jan 2018 17:21:09 +0000 Subject: x86/efi: Fix kernel param add_efi_memmap regression
From: Dave Young dyoung@redhat.com
[ Upstream commit 835bcec5fdf3f9e880111b482177e7e70e3596da ]
'add_efi_memmap' is an early param, but do_add_efi_memmap() has no chance to run because the code path is before parse_early_param(). I believe it worked when the param was introduced but probably later some other changes caused the wrong order and nobody noticed it.
Move efi_memblock_x86_reserve_range() after parse_early_param() to fix it.
Signed-off-by: Dave Young dyoung@redhat.com Signed-off-by: Matt Fleming matt@codeblueprint.co.uk Signed-off-by: Ard Biesheuvel ard.biesheuvel@linaro.org Cc: Bryan O'Donoghue pure.logic@nexus-software.ie Cc: Ge Song ge.song@hxt-semitech.com 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/20180102172110.17018-2-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar mingo@kernel.org Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/kernel/setup.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
--- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -928,9 +928,6 @@ void __init setup_arch(char **cmdline_p) set_bit(EFI_BOOT, &efi.flags); set_bit(EFI_64BIT, &efi.flags); } - - if (efi_enabled(EFI_BOOT)) - efi_memblock_x86_reserve_range(); #endif
x86_init.oem.arch_setup(); @@ -984,6 +981,8 @@ void __init setup_arch(char **cmdline_p)
parse_early_param();
+ if (efi_enabled(EFI_BOOT)) + efi_memblock_x86_reserve_range(); #ifdef CONFIG_MEMORY_HOTPLUG /* * Memory used by the kernel cannot be hot-removed because Linux
Patches currently in stable-queue which might be from dyoung@redhat.com are
queue-4.14/x86-efi-fix-kernel-param-add_efi_memmap-regression.patch