From: Linus Torvalds <torvalds@linux-foundation.org>
To: Tony Luck <tony.luck@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Peter Anvin <hpa@zytor.com>,
Borislav Petkov <bp@alien8.de>,
linux-edac <linux-edac@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Dave Jiang <dave.jiang@intel.com>
Subject: [V2] x86/mce: Fix set_mce_nospec() to avoid #GP fault
Date: Fri, 31 Aug 2018 09:57:59 -0700 [thread overview]
Message-ID: <CA+55aFyu0gwg4hSmx7yMmryGb0EKYfg7Jp3FE9YafR9U=7v9Ng@mail.gmail.com> (raw)
Ack. This looks good with the big comment and explanation.
Linus
On Fri, Aug 31, 2018 at 9:55 AM Luck, Tony <tony.luck@intel.com> wrote:
>
> The trick with flipping bit 63 to avoid loading the address of the
> 1:1 mapping of the poisoned page while we update the 1:1 map used
> to work when we wanted to unmap the page. But it falls down horribly
> when we try to directly set the page as uncacheable.
> [ ... ]
next reply other threads:[~2018-08-31 16:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-31 16:57 Linus Torvalds [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-08-31 16:55 [V2] x86/mce: Fix set_mce_nospec() to avoid #GP fault Luck, Tony
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