From: Mihai Carabas <mihai.carabas@oracle.com>
To: qemu-devel@nongnu.org
Cc: Mihai Carabas <mihai.carabas@oracle.com>,
peter.maydell@linaro.org, kraxel@redhat.com
Subject: [PATCH v4 3/4] pvpanic : update pvpanic spec document
Date: Wed, 20 Jan 2021 12:31:56 +0200 [thread overview]
Message-ID: <1611138717-1672-4-git-send-email-mihai.carabas@oracle.com> (raw)
In-Reply-To: <1611138717-1672-1-git-send-email-mihai.carabas@oracle.com>
Add pvpanic PCI device support details in docs/specs/pvpanic.txt.
Signed-off-by: Mihai Carabas <mihai.carabas@oracle.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
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..8afcde1 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 bus
+can enable a pvpanic device by adding '-device pvpanic-pci' to the command
+line.
+
ACPI Interface
--------------
--
1.8.3.1
next prev parent reply other threads:[~2021-01-20 11:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-20 10:31 [PATCH v4] Add support for pvpanic pci device Mihai Carabas
2021-01-20 10:31 ` [PATCH v4 1/4] hw/misc/pvpanic: split-out generic and bus dependent code Mihai Carabas
2021-01-20 10:31 ` [PATCH v4 2/4] hw/misc/pvpanic: add PCI interface support Mihai Carabas
2021-01-20 10:31 ` Mihai Carabas [this message]
2021-01-20 10:31 ` [PATCH v4 4/4] tests/qtest: add a test case for pvpanic-pci Mihai Carabas
2021-01-26 16:20 ` [PATCH v4] Add support for pvpanic pci device Peter Maydell
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