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Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit?

From Dave Hansen <dave.hansen@linux.intel.com>
Newsgroups linux.kernel
Subject Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit?
Date 2015-12-18 18:00 +0100
Message-ID <qH6xR-8aD-17@gated-at.bofh.it> (permalink)
References (2 earlier) <qGT7A-81l-15@gated-at.bofh.it> <qGTqW-885-3@gated-at.bofh.it> <qGVM5-1nL-11@gated-at.bofh.it> <qGX1v-25a-1@gated-at.bofh.it> <qH5Ls-7Ro-21@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 12/18/2015 08:04 AM, Andy Lutomirski wrote:
> Which reminds me: __get_user, etc all respect PKRU because the SDM
> says that PKRU affects all user *and* kernel accesses to user memory
> (i.e. anything with _PAGE_USER).  Should get_user_pages also respect
> PKRU?

It does.  There are a couple of parts to it, but the most important are
in these patches:

> http://git.kernel.org/cgit/linux/kernel/git/daveh/x86-pkeys.git/commit/?h=pkeys-v018&id=c64acbe036487d07968ea6a5b9090169d6e40160
> http://git.kernel.org/cgit/linux/kernel/git/daveh/x86-pkeys.git/commit/?h=pkeys-v018&id=331c62eb789f969e187964e28ac80b1e0e26b69d


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Thread

Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@kernel.org> - 2015-12-18 02:50 +0100
  Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-18 03:20 +0100
    Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-18 03:40 +0100
      Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-18 04:00 +0100
        Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-18 06:30 +0100
          Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? "H. Peter Anvin" <hpa@zytor.com> - 2015-12-18 07:50 +0100
            Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-18 17:10 +0100
              Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-18 18:00 +0100
              Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-18 19:50 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-18 20:30 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-18 21:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-18 21:30 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Linus Torvalds <torvalds@linux-foundation.org> - 2015-12-18 21:40 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-18 21:50 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? "H. Peter Anvin" <hpa@zytor.com> - 2015-12-18 22:00 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-18 22:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-18 22:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Linus Torvalds <torvalds@linux-foundation.org> - 2015-12-18 22:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-18 22:20 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Linus Torvalds <torvalds@linux-foundation.org> - 2015-12-18 22:50 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-18 23:30 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Linus Torvalds <torvalds@linux-foundation.org> - 2015-12-19 00:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-19 00:20 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Linus Torvalds <torvalds@linux-foundation.org> - 2015-12-19 00:30 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-21 18:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-22 00:00 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-22 00:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-22 00:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-22 00:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-22 00:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Andy Lutomirski <luto@amacapital.net> - 2015-12-22 00:10 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Dave Hansen <dave.hansen@linux.intel.com> - 2015-12-30 00:50 +0100
                Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Linus Torvalds <torvalds@linux-foundation.org> - 2015-12-18 22:20 +0100
          Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Ingo Molnar <mingo@kernel.org> - 2015-12-18 09:40 +0100
  Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Christoph Hellwig <hch@infradead.org> - 2015-12-18 10:00 +0100
    Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Borislav Petkov <bp@alien8.de> - 2015-12-18 14:00 +0100

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