Message-ID: <5474BAD8.7010307@redhat.com>
Date: Tue, 25 Nov 2014 18:22:32 +0100
From: Paolo Bonzini <pbonzini@redhat.com>
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To: Peter Maydell <peter.maydell@linaro.org>
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        "kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
        Christoffer Dall <christoffer.dall@linaro.org>,
        Marc Zyngier <marc.zyngier@arm.com>, Alexander Graf <agraf@suse.de>,
        "J. Kiszka" <jan.kiszka@siemens.com>,
        David Hildenbrand <dahi@linux.vnet.ibm.com>,
        Bharat Bhushan <r65777@freescale.com>, bp@suse.de,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>,
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Subject: Re: [PATCH 2/7] KVM: arm: guest debug, define API headers
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On 25/11/2014 18:13, Peter Maydell wrote:
> On 25 November 2014 at 17:05, Paolo Bonzini <pbonzini@redhat.com> wrote:
>> > So there is no register that says "this breakpoint has triggered" or
>> > "this watchpoint has triggered"?
> Nope. You take a debug exception; the syndrome register tells
> you if it was a bp or a wp, and if it was a wp the fault address
> register tells you the address being accessed (if it was a bp
> you know the program counter, obviously). The debugger is expected
> to be able to figure it out from there, if it cares.

That's already good enough---do the KVM_DEBUG_EXIT_* constants match the
syndrome register, or if not why?

Paolo
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