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Subject: Re: [Xen-devel] [PATCH v5 0/9] Improve non-"safe" MSR access failure
 handling
To: Andy Lutomirski <luto@kernel.org>, X86 ML <x86@kernel.org>
References: <cover.1459605520.git.luto@kernel.org>
Cc: KVM list <kvm@vger.kernel.org>, Peter Zijlstra <peterz@infradead.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        linux-kernel@vger.kernel.org, xen-devel <Xen-devel@lists.xen.org>,
        Borislav Petkov <bp@alien8.de>, Paolo Bonzini <pbonzini@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Arjan van de Ven <arjan@linux.intel.com>
From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Message-ID: <5703DBDE.5090400@oracle.com>
Date: Tue, 5 Apr 2016 11:38:06 -0400
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On 04/02/2016 10:01 AM, Andy Lutomirski wrote:
>
> Andy Lutomirski (9):
>    x86/head: Pass a real pt_regs and trapnr to early_fixup_exception
>    x86/head: Move the early NMI fixup into C
>    x86/head: Move early exception panic code into early_fixup_exception
>    x86/traps: Enable all exception handler callbacks early
>    x86/paravirt: Add _safe to the read_msr and write_msr PV hooks
>    x86/msr: Carry on after a non-"safe" MSR access fails
>    x86/paravirt: Add paravirt_{read,write}_msr
>    x86/paravirt: Make "unsafe" MSR accesses unsafe even if PARAVIRT=y
>    x86/msr: Set the return value to zero when native_rdmsr_safe fails

With Xen (on top of eb1af3b):

Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

-boris