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authorJuergen Gross <jgross@suse.com>2017-05-26 13:36:47 +0200
committerIngo Molnar <mingo@kernel.org>2017-05-28 11:06:16 +0200
commit1ea34adb87c969b89dfd83f1905a79161e9ada26 (patch)
tree354be06ec560f8db15bbc0b7fc3cc6ac612a41b3 /arch/x86
parentMerge tag 'tty-4.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gre... (diff)
downloadlinux-1ea34adb87c969b89dfd83f1905a79161e9ada26.tar.xz
linux-1ea34adb87c969b89dfd83f1905a79161e9ada26.zip
efi: Don't issue error message when booted under Xen
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: <stable@vger.kernel.org> # v4.9+ 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>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/platform/efi/quirks.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/platform/efi/quirks.c b/arch/x86/platform/efi/quirks.c
index 26615991d69c..e0cf95a83f3f 100644
--- a/arch/x86/platform/efi/quirks.c
+++ b/arch/x86/platform/efi/quirks.c
@@ -360,6 +360,9 @@ 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) {