Hi Dongjiu Geng,
On 09/04/18 22:36, Dongjiu Geng wrote:
> 1. Detect whether KVM can set set guest SError syndrome
> 2. Support to Set VSESR_EL2 and inject SError by user space.
> 3. Support live migration to keep SError pending state and VSESR_EL2 value.
> 4. ACPI 6.1 adds support for NOTIFY_SEI as a GHES notification mechanism, so
> support this
> notification in software, KVM or kernel ARCH code call handle_guest_sei()
> to let ACP driver
> to handle this notification.
Please don't post code during the merge-window, will this apply to v4.17-rc1? We
can't know until its tagged.
This series is doing two separate things, please split it into two series.
But on the ACPI front: I don't see how any OS can support your NOTIFY_SEI when
firmware is ignoring the normal world's PSTATE.A.
The latest lobe of that discussion was on the list here:
As it is, we would need to spot SError being delivered while SError is masked,
spray nasty messages about firmware being horrifically buggy, then panic(). For
a corrected error, this looks bad, but its preferable to letting firmware
silently overwrite the exception registers, causing linux to spin through the
vectors 'eret' with all exceptions masked.
I still think its best to wait for firmware that does the right thing.