x86/mm: Centralize PMD flags in sme_encrypt_kernel()
authorTom Lendacky <thomas.lendacky@amd.com>
Wed, 10 Jan 2018 19:26:16 +0000 (13:26 -0600)
committerIngo Molnar <mingo@kernel.org>
Tue, 16 Jan 2018 00:50:58 +0000 (01:50 +0100)
commit2b5d00b6c2cdd94f6d6a494a6f6c0c0fc7b8e711
treeabfb1332c04ee4ebf69c8759e61fea0827d653fe
parentbacf6b499e11760aef73a3bb5ce4e5eea74a3fd4
x86/mm: Centralize PMD flags in sme_encrypt_kernel()

In preparation for encrypting more than just the kernel during early
boot processing, centralize the use of the PMD flag settings based
on the type of mapping desired.  When 4KB aligned encryption is added,
this will allow either PTE flags or large page PMD flags to be used
without requiring the caller to adjust.

Tested-by: Gabriel Craciunescu <nix.or.die@gmail.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180110192615.6026.14767.stgit@tlendack-t1.amdoffice.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/mm/mem_encrypt.c