On Mon, Sep 11, 2023 at 03:48:38PM -0400, Peter Xu wrote:
> On Sat, Sep 09, 2023 at 03:57:44PM +0100, Joao Martins wrote:
> > > Should I continue to treat them as zero pages written with
> > > save_zero_page_to_file ?
> >
> > MCE had already been forward to the guest, so guest is supposed to not
On Sat, Sep 09, 2023 at 03:57:44PM +0100, Joao Martins wrote:
> > Should I continue to treat them as zero pages written with
> > save_zero_page_to_file ?
>
> MCE had already been forward to the guest, so guest is supposed to not be
> using
> the page (nor rely on its contents). Hence
On 06/09/2023 22:29, William Roche wrote:
> On 9/6/23 17:16, Peter Xu wrote:
>>
>> Just a note..
>>
>> Probably fine for now to reuse block page size, but IIUC the right thing to
>> do is to fetch it from the signal info (in QEMU's sigbus_handler()) of
>> kernel_siginfo.si_addr_lsb.
>>
>> At least
On 9/6/23 17:16, Peter Xu wrote:
Just a note..
Probably fine for now to reuse block page size, but IIUC the right thing to
do is to fetch it from the signal info (in QEMU's sigbus_handler()) of
kernel_siginfo.si_addr_lsb.
At least for x86 I think that stores the "shift" of covered poisoned
On Wed, Sep 06, 2023 at 03:19:32PM +0100, Joao Martins wrote:
> On 06/09/2023 14:59, “William Roche wrote:
> > From: William Roche
> >
> > A memory page poisoned from the hypervisor level is no longer readable.
> > Thus, it is now treated as a zero-page for the ram saving migration phase.
> >
>
On 06/09/2023 14:59, “William Roche wrote:
> From: William Roche
>
> A memory page poisoned from the hypervisor level is no longer readable.
> Thus, it is now treated as a zero-page for the ram saving migration phase.
>
> The migration of a VM will crash Qemu when it tries to read the
> memory
From: William Roche
A memory page poisoned from the hypervisor level is no longer readable.
Thus, it is now treated as a zero-page for the ram saving migration phase.
The migration of a VM will crash Qemu when it tries to read the
memory address space and stumbles on the poisoned page with a
