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[Qemu-devel] [PATCH] pvpanic : update pvpanic document
From: |
Peng Hao |
Subject: |
[Qemu-devel] [PATCH] pvpanic : update pvpanic document |
Date: |
Thu, 6 Dec 2018 19:26:00 +0800 |
Add mmio mode as a pci device support info in docs/specs/pvpanic.txt.
Signed-off-by: Peng Hao <address@hidden>
---
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 c7bbacc..6d62d72 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 +9,10 @@ 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, since qemu 4.0, as a PCI device (using MMIO address space of pci
+device).
+
ISA Interface
-------------
@@ -19,6 +23,13 @@ Software should set only bits both itself and the device
recognize.
Currently, only bit 0 is recognized, setting it indicates a guest panic
has happened.
+PCI Interface
+-------------
+
+The PCI interface is similar to the ISA interface except that it uses
+MMIO. For example, the arm virt machine could enable pvpanic-pci device
+according to adding "-device pvpanic-pci" in qemu command.
+
ACPI Interface
--------------
--
1.8.3.1
- [Qemu-devel] [PATCH V12 0/5] add pvpanic mmio support, Peng Hao, 2018/12/06
- [Qemu-devel] [PATCH V12 4/5] hw/arm/virt: Use the pvpanic pci device, Peng Hao, 2018/12/06
- [Qemu-devel] [PATCH] pvpanic : update pvpanic document,
Peng Hao <=
- [Qemu-devel] [PATCH V12 1/5] hw/misc/pvpanic: Build the pvpanic device in $(common-obj), Peng Hao, 2018/12/06
- [Qemu-devel] [PATCH V12 3/5] hw/misc/pvpanic: Add the PCI interface, Peng Hao, 2018/12/06
- [Qemu-devel] [PATCH V12 2/5] hw/misc/pvpanic: Cosmetic renaming, Peng Hao, 2018/12/06
- Re: [Qemu-devel] [PATCH V12 0/5] add pvpanic mmio support, peng.hao2, 2018/12/08
- Re: [Qemu-devel] [PATCH V12 0/5] add pvpanic mmio support, Andrew Jones, 2018/12/10