| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 034/119] efi: Dont issue error message when booted under Xen | Date | Mon, 12 Jun 2017 17:24:56 +0200 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Juergen Gross <jgross@suse.com>
commit 1ea34adb87c969b89dfd83f1905a79161e9ada26 upstream.
When booted as Xen dom0 there won't be an EFI memmap allocated. Avoid issuing an error message in this case:
[ 0.144079] efi: Failed to allocate new EFI memmap
Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: 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/20170526113652.21339-2-matt@codeblueprint.co.uk Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/x86/platform/efi/quirks.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/arch/x86/platform/efi/quirks.c +++ b/arch/x86/platform/efi/quirks.c @@ -358,6 +358,9 @@ void __init efi_free_boot_services(void) free_bootmem_late(start, size); } + if (!num_entries) + return; + new_size = efi.memmap.desc_size * num_entries; new_phys = efi_memmap_alloc(num_entries); if (!new_phys) {
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