From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Kiper Subject: [PATCH 1/2] efi: Process MEMATTR table only if EFI_MEMMAP Date: Tue, 20 Jun 2017 22:14:27 +0200 Message-ID: <1497989668-6238-2-git-send-email-daniel.kiper@oracle.com> References: <1497989668-6238-1-git-send-email-daniel.kiper@oracle.com> Return-path: In-Reply-To: <1497989668-6238-1-git-send-email-daniel.kiper@oracle.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org, stable@vger.kernel.org, xen-devel@lists.xenproject.org Cc: boris.ostrovsky@oracle.com, jgross@suse.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, matt@codeblueprint.co.uk, ard.biesheuvel@linaro.org List-Id: linux-efi@vger.kernel.org Otherwise e.g. Xen dom0 on x86_64 EFI platforms crashes. In theory we can check EFI_PARAVIRT too, however, EFI_MEMMAP looks more generic and covers more cases. Signed-off-by: Daniel Kiper --- drivers/firmware/efi/efi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index b372aad..045d6d3 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -528,7 +528,8 @@ int __init efi_config_parse_tables(void *config_tables, int count, int sz, } } - efi_memattr_init(); + if (efi_enabled(EFI_MEMMAP)) + efi_memattr_init(); /* Parse the EFI Properties table if it exists */ if (efi.properties_table != EFI_INVALID_TABLE_ADDR) { -- 1.7.10.4