]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
x86, swiotlb: Add memory encryption support
authorTom Lendacky <thomas.lendacky@amd.com>
Mon, 17 Jul 2017 21:10:21 +0000 (16:10 -0500)
committerIngo Molnar <mingo@kernel.org>
Tue, 18 Jul 2017 09:38:03 +0000 (11:38 +0200)
commitc7753208a94c73d5beb1e4bd843081d6dc7d4678
tree9206890b53db25e5619f3affe170f0bd9feb7e25
parent163ea3c83aeeb3908a51162c79cb3a7c374d92b4
x86, swiotlb: Add memory encryption support

Since DMA addresses will effectively look like 48-bit addresses when the
memory encryption mask is set, SWIOTLB is needed if the DMA mask of the
device performing the DMA does not support 48-bits. SWIOTLB will be
initialized to create decrypted bounce buffers for use by these devices.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Toshimitsu Kani <toshi.kani@hpe.com>
Cc: kasan-dev@googlegroups.com
Cc: kvm@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: linux-efi@vger.kernel.org
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/aa2d29b78ae7d508db8881e46a3215231b9327a7.1500319216.git.thomas.lendacky@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/include/asm/dma-mapping.h
arch/x86/include/asm/mem_encrypt.h
arch/x86/kernel/pci-dma.c
arch/x86/kernel/pci-nommu.c
arch/x86/kernel/pci-swiotlb.c
arch/x86/mm/mem_encrypt.c
include/linux/swiotlb.h
init/main.c
lib/swiotlb.c