From: Borislav Petkov <bp@alien8.de>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Paolo Bonzini <pbonzini@redhat.com>,
xen-devel <Xen-devel@lists.xen.org>,
Arjan van de Ven <arjan@linux.intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
KVM list <kvm@vger.kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v2 1/2] x86/msr: Carry on after a non-"safe" MSR access fails without !panic_on_oops
Date: Mon, 21 Sep 2015 20:36:34 +0200 [thread overview]
Message-ID: <20150921183634.GE3666@pd.tnic> (raw)
In-Reply-To: <CALCETrUBcDxvtjKC-m97GPwCOHvcoDdGjnMJLukSue8ha55mng@mail.gmail.com>
On Mon, Sep 21, 2015 at 11:16:30AM -0700, Andy Lutomirski wrote:
> In the interest of sanity, I want to drop the "native_", too, since
> there appear to be few or no good use cases for native_read_msr as
> such. I'm tempted to add new functions read_msr and write_msr that
> forward to rdmsrl_safe and wrmsrl_safe.
Just change the msr_read/msr_write() ones in arch/x86/lib/msr.c to take
a u64 and you're there.
> It looks like the msr helpers are every bit as bad as the TSC helpers
> used to be :(
Yap.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
next prev parent reply other threads:[~2015-09-21 18:36 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-21 0:02 [PATCH v2 0/2] x86/msr: MSR access failure changes Andy Lutomirski
2015-09-21 0:02 ` [PATCH v2 1/2] x86/msr: Carry on after a non-"safe" MSR access fails without !panic_on_oops Andy Lutomirski
2015-09-21 0:15 ` Linus Torvalds
2015-09-21 1:13 ` Andy Lutomirski
2015-09-21 8:46 ` Ingo Molnar
2015-09-21 12:27 ` Paolo Bonzini
2015-09-21 16:36 ` Linus Torvalds
2015-09-21 16:49 ` Arjan van de Ven
2015-09-21 17:27 ` Linus Torvalds
2015-09-21 17:43 ` Andy Lutomirski
2015-09-22 8:12 ` Paolo Bonzini
2015-09-21 18:16 ` Andy Lutomirski
2015-09-21 18:36 ` Borislav Petkov [this message]
2015-09-21 18:47 ` Linus Torvalds
2015-09-22 7:14 ` Ingo Molnar
2015-09-30 13:10 ` Peter Zijlstra
2015-09-30 14:01 ` Ingo Molnar
2015-09-30 18:04 ` Andy Lutomirski
2015-10-01 7:15 ` Ingo Molnar
2016-03-11 16:48 ` Andy Lutomirski
2016-03-12 16:02 ` Ingo Molnar
2015-09-30 18:32 ` H. Peter Anvin
2015-09-21 0:02 ` [PATCH v2 2/2] x86/msr: Set the return value to zero when native_rdmsr_safe fails Andy Lutomirski
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