Hi Paolo,

On 02/05/17 16:48, Paolo Bonzini wrote:

On 02/05/2017 09:56, Christoffer Dall wrote:

quoted

The subject and description of these patches are also misleading.
Hopefully this is in no way tied to kvmtool, but to userspace
generically, for example also to be used by QEMU?

Yes, QEMU already has a similar capability on x86.

Does ARM support background scrubbing of memory to detect errors? 

As part of RAS support, yes. A way for firmware to notify the OS about these
events was recently added to the ACPI specification.
We are aiming to turn on ARCH_SUPPORTS_MEMORY_FAILURE which does the Linux end
of things. Punit has a series here:
https://www.spinics.net/lists/arm-kernel/msg575944.html

If
so, are there any plans to support action-optional SIGBUS on ARM?

It looks like ARCH_SUPPORTS_MEMORY_FAILURE will bring that in, so yes.



Thanks,

James