Displaying 2 results from an estimated 2 matches for "copy_to_iter_mcsafe".
2020 Jun 23
2
Should SEV-ES #VC use IST? (Re: [PATCH] Allow RDTSC and RDTSCP from userspace)
On Tue, Jun 23, 2020 at 04:39:26PM +0100, Andrew Cooper wrote:
> On 23/06/2020 16:23, Peter Zijlstra wrote:
> > On Tue, Jun 23, 2020 at 04:59:14PM +0200, Joerg Roedel wrote:
> >> Yes, this is a start, it doesn't cover the case where the NMI stack is
> >> in-between, so I think you need to walk down regs->sp too.
> > That shouldn't be possible with the
2020 Jun 23
0
Should SEV-ES #VC use IST? (Re: [PATCH] Allow RDTSC and RDTSCP from userspace)
On 6/23/20 8:52 AM, Peter Zijlstra wrote:
> Isn't current #MC unconditionally fatal from kernel? But yes, I was
> sorta aware people want that changed.
Not unconditionally. copy_to_iter_mcsafe() is a good example of one
thing we _can_ handle.