From: Christoph Hellwig <hch@infradead.org>
To: "Thomas Hellström (VMware)" <thomas_os@shipmail.org>
Cc: "Dave Hansen" <dave.hansen@intel.com>,
linux-kernel@vger.kernel.org, x86@kernel.org,
pv-drivers@vmware.com, "Thomas Hellstrom" <thellstrom@vmware.com>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Andy Lutomirski" <luto@kernel.org>,
"Peter Zijlstra" <peterz@infradead.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"Christoph Hellwig" <hch@infradead.org>,
"Christian König" <christian.koenig@amd.com>,
"Marek Szyprowski" <m.szyprowski@samsung.com>,
"Tom Lendacky" <thomas.lendacky@amd.com>
Subject: Re: [RFC PATCH 1/2] x86: Don't let pgprot_modify() change the page encryption bit
Date: Thu, 5 Sep 2019 08:24:38 -0700 [thread overview]
Message-ID: <20190905152438.GA18286@infradead.org> (raw)
In-Reply-To: <b84d1dca-4542-a491-e585-a96c9d178466@shipmail.org>
On Thu, Sep 05, 2019 at 05:21:24PM +0200, Thomas Hellström (VMware) wrote:
> On 9/5/19 4:15 PM, Dave Hansen wrote:
> > Hi Thomas,
> >
> > Thanks for the second batch of patches! These look much improved on all
> > fronts.
>
> Yes, although the TTM functionality isn't in yet. Hopefully we won't have to
> bother you with those though, since this assumes TTM will be using the dma
> API.
Please take a look at dma_mmap_prepare and dma_mmap_fault in this
branch:
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/dma-mmap-improvements
they should allow to fault dma api pages in the page fault handler. But
this is totally hot off the press and not actually tested for the last
few patches. Note that I've also included your two patches from this
series to handle SEV.
next prev parent reply other threads:[~2019-09-05 15:24 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 10:35 [RFC PATCH 0/2] Fix SEV user-space mapping of unencrypted coherent memory Thomas Hellström (VMware)
2019-09-05 10:35 ` [RFC PATCH 1/2] x86: Don't let pgprot_modify() change the page encryption bit Thomas Hellström (VMware)
2019-09-05 14:15 ` Dave Hansen
2019-09-05 15:21 ` Thomas Hellström (VMware)
2019-09-05 15:24 ` Christoph Hellwig [this message]
2019-09-05 16:40 ` Thomas Hellström (VMware)
2019-09-05 17:05 ` dma_mmap_fault discussion Thomas Hellström (VMware)
2019-09-06 6:32 ` Christoph Hellwig
2019-09-06 7:10 ` Thomas Hellström (VMware)
2019-09-06 7:20 ` Christoph Hellwig
2019-09-10 8:37 ` Thomas Hellström (VMware)
2019-09-10 16:11 ` [RFC PATCH 1/2] x86: Don't let pgprot_modify() change the page encryption bit Andy Lutomirski
2019-09-10 19:26 ` Thomas Hellström (VMware)
2019-09-11 4:18 ` Andy Lutomirski
2019-09-11 7:49 ` Thomas Hellström (VMware)
2019-09-11 18:03 ` Andy Lutomirski
2019-09-12 8:29 ` Thomas Hellström (VMware)
2019-09-11 9:08 ` Koenig, Christian
2019-09-11 10:10 ` TTM huge page-faults WAS: " Thomas Hellström (VMware)
2019-09-11 14:06 ` Koenig, Christian
2019-09-11 15:08 ` Thomas Hellström (VMware)
2019-09-24 12:03 ` Koenig, Christian
2019-09-05 15:59 ` Dave Hansen
2019-09-05 16:29 ` Thomas Hellström (VMware)
2019-09-05 10:35 ` [RFC PATCH 2/2] dma-mapping: Fix dma_pgprot() for unencrypted coherent pages Thomas Hellström (VMware)
2019-09-05 11:23 ` [RFC PATCH 0/2] Fix SEV user-space mapping of unencrypted coherent memory Christoph Hellwig
2019-09-10 6:11 ` Christoph Hellwig
2019-09-10 6:25 ` Thomas Hellström (VMware)
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