"Gowans, James" writes:
> On Mon, 2023-12-11 at 09:54 +0200, James Gowans wrote:
>> >
>> > What problem are you running into with your rebase that worked with
>> > reboot notifiers that is not working with syscore_shutdown?
>>
>> Prior to this commit [1] which changed KVM from reboot notifiers
On Tue, Dec 05, 2023 at 03:45:01AM +0300, Kirill A. Shutemov wrote:
> kvm_guest_cpu_offline() tries to disable kvmclock regardless if it is
> present in the VM. It leads to write to a MSR that doesn't exist on some
> configurations, namely in TDX guest:
>
> unchecked MSR access error: WRMSR
On Mon, 2023-12-11 at 09:34 -0800, Sean Christopherson wrote:
> On Sat, Dec 09, 2023, James Gowans wrote:
> > Thoughts on possible ways to fix this:
> > a) go back to reboot notifiers
> > b) get kexec to call syscore_shutdown() to invoke all of these callbacks
> > c) Add a KVM-specific callback to
On Mon, Dec 11, 2023, Sean Christopherson wrote:
> On Sat, Dec 09, 2023, James Gowans wrote:
> > Hi Sean,
> >
> > Blast from the past but I've just been bitten by this patch when
> > rebasing across v6.4.
> >
> > On Fri, 2023-05-12 at 16:31 -0700, Sean Christopherson wrote:
> > > Use
On Sat, Dec 09, 2023, James Gowans wrote:
> Hi Sean,
>
> Blast from the past but I've just been bitten by this patch when
> rebasing across v6.4.
>
> On Fri, 2023-05-12 at 16:31 -0700, Sean Christopherson wrote:
> > Use syscore_ops.shutdown to disable hardware virtualization during a
> > reboot
On Mon, 2023-12-11 at 09:54 +0200, James Gowans wrote:
> >
> > What problem are you running into with your rebase that worked with
> > reboot notifiers that is not working with syscore_shutdown?
>
> Prior to this commit [1] which changed KVM from reboot notifiers to
> syscore_ops, KVM's reboot
On 12/11/23 at 09:25am, Geert Uytterhoeven wrote:
> Hi Baoquan,
>
> On Fri, Dec 8, 2023 at 8:43 AM Baoquan He wrote:
> > Forgot adding kexec to CC, add it now.
> >
> > On 12/08/23 at 03:30pm, Baoquan He wrote:
> > > The select of KEXEC for CRASH_DUMP in kernel/Kconfig.kexec will be
> > >
Extend the arch crash hotplug handler, as introduced by the patch title
("powerpc: add crash CPU hotplug support"), to also support memory
add/remove events.
Elfcorehdr describes the memory of the crash kernel to capture the
kernel; hence, it needs to be updated if memory resources change due to
Due to CPU/Memory hotplug or online/offline events the elfcorehdr
(which describes the CPUs and memory of the crashed kernel) and FDT
(Flattened Device Tree) of kdump image becomes outdated. Consequently,
attempting dump collection with an outdated elfcorehdr or FDT can lead
to failed or
The commit a72bbec70da2 ("crash: hotplug support for kexec_load()")
introduced a new kexec flag, `KEXEC_UPDATE_ELFCOREHDR`. Kexec tool uses
this flag to indicate kernel that it is safe to modify the elfcorehdr
of kdump image loaded using kexec_load system call.
Similarly, add a new kexec flag,
In the event of memory hotplug or online/offline events, the crash
memory hotplug notifier `crash_memhp_notifier()` receives a
`memory_notify` object but doesn't forward that object to the
generic and architecture-specific crash hotplug handler.
The `memory_notify` object contains the starting
Commit 247262756121 ("crash: add generic infrastructure for crash
hotplug support") added a generic infrastructure that allows
architectures to selectively update the kdump image component during CPU
or memory add/remove events within the kernel itself.
This patch series adds crash hotplug
Move the functions update_cpus_node and get_crash_memory_ranges from
kexec/file_load_64.c to kexec/core_64.c to make these functions usable
by other kexec components.
get_crash_memory_ranges uses functions defined in ranges.c, so take
ranges.c out of CONFIG_KEXEC_FILE.
Later in the series, these
Architectures' specific functions `arch_crash_hotplug_cpu_support()` and
`arch_crash_hotplug_memory_support()` advertise the kernel's capability
to update the kdump image on CPU and Memory hotplug events to userspace
via the sysfs interface. These architecture-specific functions need to
access
Hi Baoquan,
On Fri, Dec 8, 2023 at 8:43 AM Baoquan He wrote:
> Forgot adding kexec to CC, add it now.
>
> On 12/08/23 at 03:30pm, Baoquan He wrote:
> > The select of KEXEC for CRASH_DUMP in kernel/Kconfig.kexec will be
> > dropped, then compiling errors will be triggered if below config
> >
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