From: Dave Hansen <dave.hansen@intel.com>
To: "Thomas Hellström (VMware)" <thomas_os@shipmail.org>,
linux-kernel@vger.kernel.org
Cc: pv-drivers@vmware.com, linux-graphics-maintainer@vmware.com,
x86@kernel.org, "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: [PATCH v3 1/2] x86: Don't let pgprot_modify() change the page encryption bit
Date: Wed, 18 Sep 2019 10:57:40 -0700 [thread overview]
Message-ID: <d893ef47-443e-0759-8f1e-d496a4ad3dfd@intel.com> (raw)
In-Reply-To: <20190917130115.51748-2-thomas_os@shipmail.org>
On 9/17/19 6:01 AM, Thomas Hellström (VMware) wrote:
> diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
> index b5e49e6bac63..8267dd426b15 100644
> --- a/arch/x86/include/asm/pgtable_types.h
> +++ b/arch/x86/include/asm/pgtable_types.h
> @@ -123,7 +123,7 @@
> */
> #define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \
> _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY | \
> - _PAGE_SOFT_DIRTY | _PAGE_DEVMAP)
> + _PAGE_SOFT_DIRTY | _PAGE_DEVMAP | _PAGE_ENC)
> #define _HPAGE_CHG_MASK (_PAGE_CHG_MASK | _PAGE_PSE)
My only nit with what remains is that it expands the infestation of
things that look like a simple macro but are not.
I'm debating whether we want to go fix that now, though.
next prev parent reply other threads:[~2019-09-18 17:57 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-17 13:01 [PATCH v3 0/2] Fix SEV user-space mapping of unencrypted coherent memory Thomas Hellström (VMware)
2019-09-17 13:01 ` [PATCH v3 1/2] x86: Don't let pgprot_modify() change the page encryption bit Thomas Hellström (VMware)
2019-09-18 17:57 ` Dave Hansen [this message]
2019-10-01 5:54 ` Thomas Hellstrom
2019-10-01 16:07 ` Dave Hansen
2019-09-17 13:01 ` [PATCH v3 2/2] dma-mapping: Fix dma_pgprot() for unencrypted coherent pages Thomas Hellström (VMware)
2019-09-18 13:39 ` [PATCH v3 0/2] Fix SEV user-space mapping of unencrypted coherent memory Christoph Hellwig
2020-03-04 11:45 [PATCH v4 " Thomas Hellström (VMware)
2020-03-04 11:45 ` [PATCH v3 1/2] x86: Don't let pgprot_modify() change the page encryption bit Thomas Hellström (VMware)
2020-03-16 19:43 ` Tom Lendacky
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