diff options
| author | Daniel Kiper <daniel.kiper@oracle.com> | 2017-06-22 12:51:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-21 07:00:09 +0200 |
| commit | 5c5b4bff5f4edb04285e8affb717e4830e4fc6bc (patch) | |
| tree | 7e22749b011c3edec39649bc321d238d6e4a9a5b | |
| parent | 046f5b7733ab3363ec0f5b430ac98030411e5e69 (diff) | |
efi: Process the MEMATTR table only if EFI_MEMMAP is enabled
commit 457ea3f7e97881f937136ce0ba1f29f82b9abdb0 upstream.
Otherwise e.g. Xen dom0 on x86_64 EFI platforms crashes.
In theory we can check EFI_PARAVIRT too, however,
EFI_MEMMAP looks more targeted and covers more cases.
Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>
Reviewed-by: 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: andrew.cooper3@citrix.com
Cc: boris.ostrovsky@oracle.com
Cc: jgross@suse.com
Cc: linux-efi@vger.kernel.org
Cc: matt@codeblueprint.co.uk
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/1498128697-12943-2-git-send-email-daniel.kiper@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/firmware/efi/efi.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index b372aad3b449..045d6d311bde 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) { |