Messages in this thread | | | Date | Mon, 06 Oct 2014 09:57:22 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH v4 0/2] x86_64,entry: Clear NT on entry and speed up switch_to |
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On 10/06/2014 09:45 AM, Andy Lutomirski wrote: > On Mon, Oct 6, 2014 at 9:41 AM, H. Peter Anvin <hpa@zytor.com> wrote: >> On 10/06/2014 09:39 AM, Andy Lutomirski wrote: >>> On Wed, Oct 1, 2014 at 11:49 AM, Andy Lutomirski <luto@amacapital.net> wrote: >>>> Anish Bhatt noticed that user programs can set RFLAGS.NT before >>>> syscall or sysenter, and the kernel entry code doesn't filter out >>>> NT. This causes kernel C code and, depending on thread flags, the >>>> exit slow path to run with NT set. >>>> >>> >>> Quick ping: now that the merge window is (sort of) open, what's >>> happening with these patches? >>> >>> Thanks, >>> Andy >>> >> >> My preference would be to queue them up for 3.19 since they arrived late >> in the 3.18 cycle. > > I see nothing wrong with deferring patch 2 for 3.19, but deferring > patch 1, which is tagged for stable, for an entire release seems a bit > silly to me. >
Yes, that is probably going to get pushed later in this merge window; that is usually how we deal with that sort of thing.
-hpa
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