On Mon, 13 May 2019 at 07:32, Dongjiu Geng <gengdongjiu@xxxxxxxxxx> wrote: > > When user space do memory recovery, it will check whether KVM and > guest support the error recovery, only when both of them support, > user space will do the error recovery. This patch exports this > capability of KVM to user space. > > Cc: Peter Maydell <peter.maydell@xxxxxxxxxx> > Signed-off-by: Dongjiu Geng <gengdongjiu@xxxxxxxxxx> > --- > v1->v2: > 1. check whether host support memory failure instead of RAS capability > https://patchwork.kernel.org/patch/10730827/ > > v1: > 1. User space needs to check this capability of host is suggested by Peter[1], > this patch as RFC tag because user space patches are still under review, > so this kernel patch is firstly sent out for review. > > [1]: https://patchwork.codeaurora.org/patch/652261/ > --- I thought the conclusion of the thread on the v1 patch was that userspace doesn't need to specifically ask the host kernel if it has support for this -- if it does not, then the host kernel will just never deliver userspace any SIGBUS with MCEERR code, which is fine. Or am I still confused? thanks -- PMM
