From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tom Lendacky Subject: Re: [PATCH v5 22/32] x86, swiotlb: DMA support for memory encryption Date: Fri, 19 May 2017 14:54:08 -0500 Message-ID: References: <20170418211612.10190.82788.stgit@tlendack-t1.amdoffice.net> <20170418212010.10190.78119.stgit@tlendack-t1.amdoffice.net> <20170516142740.sxfzkvghxubj2okr@pd.tnic> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20170516142740.sxfzkvghxubj2okr@pd.tnic> Sender: owner-linux-mm@kvack.org To: Borislav Petkov Cc: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Rik van Riel , =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= , Toshimitsu Kani , Arnd Bergmann , Jonathan Corbet , Matt Fleming , "Michael S. Tsirkin" , Joerg Roedel , Konrad Rzeszutek Wilk , Paolo Bonzini , Larry Woodman , Brijesh Singh , Ingo Molnar , Andy Lutomirski , "H. Peter Anvin" , Andrey Ryabinin List-Id: linux-efi@vger.kernel.org On 5/16/2017 9:27 AM, Borislav Petkov wrote: > On Tue, Apr 18, 2017 at 04:20:10PM -0500, Tom Lendacky wrote: >> 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. > > Use a verb in the subject: > > Subject: x86, swiotlb: Add memory encryption support > > or similar. Will do. Thanks, Tom > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org