From: Linus Torvalds <torvalds@linux-foundation.org>
To: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
Michal Hocko <mhocko@suse.com>, Borislav Petkov <bp@alien8.de>,
Andrew Morton <akpm@linux-foundation.org>,
the arch/x86 maintainers <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andi Kleen <ak@linux.intel.com>, linux-mm <linux-mm@kvack.org>,
Dave Hansen <dave@sr71.net>
Subject: Re: [PATCH 6/6] x86: Fix stray A/D bit setting into non-present PTEs
Date: Thu, 30 Jun 2016 20:21:15 -0700 [thread overview]
Message-ID: <CA+55aFwVMHWH=Xiu7o8RXNgSQ6C6==RZhMNoWJ=kMwA5LAQXdg@mail.gmail.com> (raw)
In-Reply-To: <CAMzpN2iLBKF7vK3TuTPwYn2nZOw2q_Pn=q+g6pNuVs0k6Xd5LQ@mail.gmail.com>
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On Jun 30, 2016 8:06 PM, "Brian Gerst" <brgerst@gmail.com> wrote:
>
> Could this affect a 32-bit guest VM?
Even on 32-bit, all the distros do PAE to get NX and access to more
physical memory, and that has a 64-bit page table entry.
The 32-bit page table case is pretty unusual.
Linus
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next prev parent reply other threads:[~2016-07-01 3:21 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-01 0:12 [PATCH 0/6] [v3] Workaround for Xeon Phi PTE A/D bits erratum Dave Hansen
2016-07-01 0:12 ` [PATCH 1/6] x86: fix duplicated X86_BUG(9) macro Dave Hansen
2016-07-01 9:23 ` Borislav Petkov
2016-07-01 16:30 ` Andy Lutomirski
2016-07-01 16:46 ` Borislav Petkov
2016-07-03 14:36 ` Andy Lutomirski
2016-07-03 18:44 ` Borislav Petkov
2016-07-01 0:12 ` [PATCH 2/6] mm, tlb: add mmu_gather->saw_unset_a_or_d Dave Hansen
2016-07-01 0:12 ` [PATCH 3/6] mm: add force_batch_flush to mmu_gather Dave Hansen
2016-07-01 0:12 ` [PATCH 4/6] mm: move flush in madvise_free_pte_range() Dave Hansen
2016-07-01 0:12 ` [PATCH 5/6] mm: make tlb_flush_mmu_tlbonly() return whether it flushed Dave Hansen
2016-07-01 0:12 ` [PATCH 6/6] x86: Fix stray A/D bit setting into non-present PTEs Dave Hansen
2016-07-01 1:50 ` Nadav Amit
2016-07-01 1:54 ` Dave Hansen
2016-07-01 2:55 ` Linus Torvalds
2016-07-01 3:06 ` Brian Gerst
2016-07-01 3:21 ` Linus Torvalds [this message]
2016-07-03 17:10 ` Dave Hansen
2016-07-01 4:39 ` Dave Hansen
2016-07-01 5:43 ` Linus Torvalds
2016-07-01 14:25 ` Eric W. Biederman
2016-07-01 15:51 ` Dave Hansen
2016-07-01 18:12 ` Eric W. Biederman
2016-07-01 16:07 ` Linus Torvalds
2016-07-01 16:14 ` Dave Hansen
2016-07-01 16:25 ` Linus Torvalds
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