On 11/30/23 03:30, Ingo Molnar wrote:
- Ashwin Dayanand Kamat kashwindayan@vmware.com wrote:
From: Ashwin Dayanand Kamat ashwin.kamat@broadcom.com
kernel crash was observed because of page fault, while running cpuhotplug ltp testcases on SEV-ES enabled systems. The crash was observed during hotplug after the CPU was offlined and the process was migrated to different cpu. setup_ghcb() is called again which tries to update ghcb_version in sev_es_negotiate_protocol(). Ideally this is a read_only variable which is initialised during booting. This results in pagefault.
Applied to tip:x86/urgent, thanks.
Tom: I've added your Suggested-by and Acked-by, which appeared to be the case given the v1 discussion, let me know if that's not accurate.
All good.
Thanks, Tom
I've also tidied up the changelog - final version attached below.
Thanks,
Ingo