From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kroah-Hartman Subject: [PATCH 4.11 048/150] efi: Dont issue error message when booted under Xen Date: Mon, 12 Jun 2017 17:24:15 +0200 Message-ID: <20170612152521.515939674@linuxfoundation.org> References: <20170612152519.404936272@linuxfoundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: In-Reply-To: <20170612152519.404936272@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Juergen Gross , Matt Fleming , Ard Biesheuvel , Linus Torvalds , Peter Zijlstra , Thomas Gleixner , linux-efi@vger.kernel.org, Ingo Molnar List-Id: linux-efi@vger.kernel.org 4.11-stable review patch. If anyone has any objections, please let me know. ------------------ From: Juergen Gross 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 Signed-off-by: Matt Fleming Cc: Ard Biesheuvel Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20170526113652.21339-2-matt@codeblueprint.co.uk Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- 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) {