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[83.57.169.13]) by smtp.gmail.com with ESMTPSA id z184sm20953763wmg.7.2021.01.18.02.32.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 18 Jan 2021 02:32:07 -0800 (PST) Subject: Re: [PATCH 3/4] pvpanic : update pvpanic spec document To: Mihai Carabas , qemu-devel@nongnu.org References: <1610735646-13313-1-git-send-email-mihai.carabas@oracle.com> <1610735646-13313-4-git-send-email-mihai.carabas@oracle.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Message-ID: <605edf10-933f-db84-714b-b1a7ec9336a3@redhat.com> Date: Mon, 18 Jan 2021 11:32:06 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <1610735646-13313-4-git-send-email-mihai.carabas@oracle.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=philmd@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -32 X-Spam_score: -3.3 X-Spam_bar: --- X-Spam_report: (-3.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.189, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.252, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, kraxel@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 1/15/21 7:34 PM, Mihai Carabas wrote: > Add pvpanic PCI device support details in docs/specs/pvpanic.txt. > > Signed-off-by: Mihai Carabas > --- > docs/specs/pvpanic.txt | 13 ++++++++++++- > 1 file changed, 12 insertions(+), 1 deletion(-) > > diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt > index a90fbca..974aafd 100644 > --- a/docs/specs/pvpanic.txt > +++ b/docs/specs/pvpanic.txt > @@ -1,7 +1,7 @@ > PVPANIC DEVICE > ============== > > -pvpanic device is a simulated ISA device, through which a guest panic > +pvpanic device is a simulated device, through which a guest panic > event is sent to qemu, and a QMP event is generated. This allows > management apps (e.g. libvirt) to be notified and respond to the event. > > @@ -9,6 +9,9 @@ The management app has the option of waiting for GUEST_PANICKED events, > and/or polling for guest-panicked RunState, to learn when the pvpanic > device has fired a panic event. > > +The pvpanic device can be implemented as an ISA device (using IOPORT) or as a > +PCI device. > + > ISA Interface > ------------- > > @@ -24,6 +27,14 @@ bit 1: a guest panic has happened and will be handled by the guest; > the host should record it or report it, but should not affect > the execution of the guest. > > +PCI Interface > +------------- > + > +The PCI interface is similar to the ISA interface except that it uses an MMIO > +address space provided by its BAR0, 1 byte long. Any machine with a PCI device "device" -> "bus"? > +can enable a pvpanic device by adding '-device pvpanic-pci' to the command > +line. > + > ACPI Interface > -------------- > >