linux/arch/x86/platform
Kirill A. Shutemov cfe1957704 x86/efi: Fix efi_call_phys_epilog() with CONFIG_X86_5LEVEL=y
Open-coded page table entry checks don't work correctly when we fold the
page table level at runtime.

pgd_present() on 4-level paging machine always returns true, but
open-coded version of the check may return false-negative result and
we silently skip the rest of the loop body in efi_call_phys_epilog().

Replace open-coded checks with proper helpers.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org # v4.12+
Fixes: 94133e46a0 ("x86/efi: Correct EFI identity mapping under 'efi=old_map' when KASLR is enabled")
Link: http://lkml.kernel.org/r/20180625120852.18300-1-kirill.shutemov@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-06-27 09:52:52 +02:00
..
atom x86/platform/atom: Re-use DEFINE_SHOW_ATTRIBUTE() macro 2018-02-16 10:10:14 +01:00
ce4100 x86/init: Remove i8042_detect() from platform ops 2016-12-19 11:34:15 +01:00
efi x86/efi: Fix efi_call_phys_epilog() with CONFIG_X86_5LEVEL=y 2018-06-27 09:52:52 +02:00
geode x86/platform: Make platform/geode/net5501.c explicitly non-modular 2016-02-16 09:11:09 +01:00
goldfish x86/platform/goldfish: Prevent unconditional loading 2017-02-15 08:49:58 -08:00
intel x86/platform/intel/iosf_mbi: Add unlocked PMIC bus access notifier unregister 2017-11-10 13:14:02 +01:00
intel-mid x86: Convert x86_platform_ops to timespec64 2018-05-19 14:03:14 +02:00
intel-quark x86/platform/quark: Re-use DEFINE_SHOW_ATTRIBUTE() macro 2018-02-16 10:10:14 +01:00
iris x86: platform: iris: drop owner assignment from platform_drivers 2014-10-20 16:20:15 +02:00
olpc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scx200 X86: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
sfi x86: Cleanup irq_domain ops 2015-04-24 15:36:55 +02:00
ts5500 x86/platform: Delete extraneous MODULE_* tags fromm ts5500 2016-07-16 22:41:00 +02:00
uv treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00