Hi Paolo, On 02/05/17 16:48, Paolo Bonzini wrote: > On 02/05/2017 09:56, Christoffer Dall wrote: >> 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
