x86: Secure Memory Encryption (SME) fixes 2017-07-26

This patch series addresses some issues found during further testing of Secure Memory Encryption (SME).

The following fixes are included in this update series:

- Fix a cache-related memory corruption when kexec is invoked in successive instances
- Remove the encryption mask from the protection properties returned by arch_apei_get_mem_attribute() when SME is active

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This patch series is based off of the master branch of tip:
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git master

Commit 8333bcad393c ("Merge branch 'x86/asm'")

Changes since v1:
- Patch #1:
- Only issue wbinvd if SME is active
- Patch #2:
- Create a no encryption version of the PAGE_KERNEL protection type and use that in arch_apei_get_mem_attribute()
- General comment and patch description clean up

Tom Lendacky (2):
x86/mm, kexec: Fix memory corruption with SME on successive kexecs acpi, x86: Remove encryption mask from ACPI page protection type

 arch/x86/include/asm/acpi.h          | 11 ++++++-----
 arch/x86/include/asm/kexec.h         |  3 ++-
 arch/x86/include/asm/pgtable_types.h |  1 +
 arch/x86/kernel/machine_kexec_64.c   |  3 ++-
 arch/x86/kernel/relocate_kernel_64.S | 14 ++++++++++++++
 5 files changed, 25 insertions(+), 7 deletions(-)

1.9.1