Hi all:
Secure boot for virtual machine NOWADAYS starts from edk2’s vBIOS, which
verifies guest OS’s shim/grub2. Then grub2 verifies guest OS’s kernel.
From the view of the whole complete trust chain, the GUEST part is
disconnected from the HOST part, as the verification of vBIOS is missing
>> If the linux kernel only receives an ABP event during pcie unplug, it will
>> sleep 5s
>> to expect a PDC event, which will cause device unplug timeout.
>
>My understanding is that there's no timeout. Spec says:
> If present, the Power Indicator provides visual feedback to the human
>oper
>> If the PCI_EXP_LNKSTA_DLLLA capability is set by default, linux kernel will
>> send
>> PDC event to detect whether there is a device in pcie slot. If a device is
>> pluged
>> in the pcie-root-port at the same time, hot-plug device will send ABP + PDC
>> events to the kernel. The VM kernel will
>-Original Message-
>From: Philippe Mathieu-Daudé [mailto:phi...@redhat.com]
>Sent: Tuesday, July 23, 2019 5:18 PM
>To: Zhangbo (Oscar) ; qemu-devel@nongnu.org
>Cc: fangying ; dengkai (A) ;
>limingwang (A) ; m...@redhat.com
>Subject: Re: [Qemu-devel] [PATCH] pci
If the linux kernel only receives an ABP event during pcie unplug, it will
sleep 5s
to expect a PDC event, which will cause device unplug timeout.
In the meanwhile, if the kernel only receives a PDC event during the unplug, it
will wait for at least 1 second before checking card present as data
If the PCI_EXP_LNKSTA_DLLLA capability is set by default, linux kernel will
send
PDC event to detect whether there is a device in pcie slot. If a device is
pluged
in the pcie-root-port at the same time, hot-plug device will send ABP + PDC
events to the kernel. The VM kernel will wrongly unplug t
If the linux kernel only receives an ABP event during pcie unplug, it will
sleep 5s
to expect a PDC event, which will cause device unplug timeout.
In the meanwhile, if the kernel only receives a PDC event during the unplug, it
will wait for at least 1 second before checking card present as data
If the PCI_EXP_LNKSTA_DLLLA capability is set by default, linux kernel will
send
PDC event to detect whether there is a device in pcie slot. If a device is
pluged
in the pcie-root-port at the same time, hot-plug device will send ABP + PDC
events to the kernel. The VM kernel will wrongly unplug t
Hi All:
I have 2 questions about (un)hotplug on pcie-root-port.
First Question (hotplug failure because of redundant PCI_EXP_LNKSTA_DLLLA bit
set):
during VM boot, qemu sets PCI_EXP_LNKSTA_DLLLA according to this process:
pcie_cap_init() -> pcie_cap_v1_fill(),
even if there's no p
>From: Stefan Hajnoczi [mailto:stefa...@gmail.com]
>Sent: Tuesday, April 23, 2019 9:57 PM
>On Tue, Apr 23, 2019 at 11:12:40AM +0800, Jie Wang wrote:
>> Does qemu-pr-helper have its own log files？
>
>No, it does not. qemu-pr-helper uses stderr for errors and there is not
>much output during normal
>[...]
>
>> >>This does not play well with the fact that processes as the PR helper
>> >>are always required.
>> >>
>> >>Merging them into libvirtd would make the VM stop until libvirtd is
>> >>running again. Additionally if any of the operations require persistent
>> >>kernel state as e.g. file de
When performing SCSI reservation inside the guest, 'sys_rawio' selinux alarm is
triggered, shown as below:
"type=AVC msg=audit(1548231520.416:8086): avc: denied { sys_rawio } for
pid=30357 comm="worker" capability=17
scontext=system_u:system_r:svirt_t:s0:c72,c348
tcontext=system_u:system_r:svir
ny other prices we need to pay to have postcopy?
-邮件原件-
发件人: Jason J. Herne [mailto:jjhe...@linux.vnet.ibm.com]
发送时间: 2016年1月7日 3:43
收件人: Dr. David Alan Gilbert; Zhangbo (Oscar)
抄送: zhouyimin Zhou(Yimin); Zhanghailiang; Yanqiangjun; Huangpeng (Peter);
qemu-devel@nongnu.org; Heron
Hi all:
Postcopy is suitable for migrating guests which have large page change rates.
It
1 makes the guest run at the destination ASAP.
2 makes the downtime of the guest small enough.
If we don't take the 1st advantage into account, then, its benefit seems
similar with CPU-THROTTLE
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