From: Dave Young <dyoung@redhat.com>
To: matt@codeblueprint.co.uk
Cc: mingo@kernel.org, ard.biesheuvel@linaro.org,
linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org
Subject: [PATCH V2] x86/efi: fix kernel param add_efi_memmap regression
Date: Sat, 16 Dec 2017 12:19:53 +0800 [thread overview]
Message-ID: <20171216041953.GA1690@dhcp-128-65.nay.redhat.com> (raw)
'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>
---
arch/x86/kernel/setup.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- linux-x86.orig/arch/x86/kernel/setup.c
+++ linux-x86/arch/x86/kernel/setup.c
@@ -906,9 +906,6 @@ 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();
@@ -962,6 +959,8 @@ 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
next reply other threads:[~2017-12-16 4:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-16 4:19 Dave Young [this message]
2017-12-18 14:23 ` Matt Fleming
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