From: Juergen Gross <jgr...@suse.com> 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 <jgr...@suse.com> Cc: "H. Peter Anvin" <h...@zytor.com> Cc: Ingo Molnar <mi...@kernel.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Ard Biesheuvel <ard.biesheu...@linaro.org> Cc: <sta...@vger.kernel.org> # v4.9+ Signed-off-by: Matt Fleming <m...@codeblueprint.co.uk> --- arch/x86/platform/efi/quirks.c | 3 +++ 1 file changed, 3 insertions(+) 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) { -- 2.12.2