Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1357598

Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access fails without !panic_on_oops

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access fails without !panic_on_oops
Date 2016-03-14 21:20 +0100
Message-ID <rcH85-dk-3@gated-at.bofh.it> (permalink)
References (3 earlier) <rcEaf-6JJ-27@gated-at.bofh.it> <rcEjT-6Ns-3@gated-at.bofh.it> <rcEjT-6Ns-1@gated-at.bofh.it> <rcF6l-7mS-77@gated-at.bofh.it> <rcFfZ-7qA-57@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On Mon, Mar 14, 2016 at 11:10:16AM -0700, Andy Lutomirski wrote:
> A couple of the wrmsr users actually care about performance.  These
> are the ones involved in context switching and, to a lesser extent, in
> switching in and out of guest mode.

Right, this very much includes a number of perf MSRs. Some of those get
called from the context switch path, others from the NMI handler.

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access fails without !panic_on_oops Andy Lutomirski <luto@kernel.org> - 2016-03-12 19:10 +0100
  Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Borislav Petkov <bp@alien8.de> - 2016-03-14 13:10 +0100
    Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Andy Lutomirski <luto@amacapital.net> - 2016-03-14 18:10 +0100
      Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Andy Lutomirski <luto@amacapital.net> - 2016-03-14 18:20 +0100
        Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Linus Torvalds <torvalds@linux-foundation.org> - 2016-03-14 19:10 +0100
          Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Linus Torvalds <torvalds@linux-foundation.org> - 2016-03-14 19:20 +0100
          Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Linus Torvalds <torvalds@linux-foundation.org> - 2016-03-14 19:20 +0100
            Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Andy Lutomirski <luto@amacapital.net> - 2016-03-14 19:30 +0100
              Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Andy Lutomirski <luto@amacapital.net> - 2016-03-14 19:50 +0100
                Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Ingo Molnar <mingo@kernel.org> - 2016-03-15 11:30 +0100
                Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Ingo Molnar <mingo@kernel.org> - 2016-03-15 11:30 +0100
              Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Linus Torvalds <torvalds@linux-foundation.org> - 2016-03-14 19:50 +0100
          Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Andy Lutomirski <luto@amacapital.net> - 2016-03-14 19:20 +0100
            Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Peter Zijlstra <peterz@infradead.org> - 2016-03-14 21:20 +0100
          Re: [PATCH v4 2/5] x86/msr: Carry on after a non-"safe" MSR access  fails without !panic_on_oops Ingo Molnar <mingo@kernel.org> - 2016-03-15 11:30 +0100

csiph-web