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| author | Juergen Gross <jgross@suse.com> | 2017-05-26 14:36:47 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-05-28 12:06:16 +0300 |
| commit | 1ea34adb87c969b89dfd83f1905a79161e9ada26 (patch) | |
| tree | 354be06ec560f8db15bbc0b7fc3cc6ac612a41b3 /arch/x86 | |
| parent | 249f1efd8e3d58f86469fc305b0eda39db18d7ce (diff) | |
| download | linux-1ea34adb87c969b89dfd83f1905a79161e9ada26.tar.xz | |
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.c | 3 |
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) { |