Hi Ashok, On 07/06/16 02:18, Paolo Bonzini wrote: > > I forgot to restore MSR_IA32_FEATURE_CONTROL in the resume path, and > > MSR_IA32_FEATURE_CONTROL is zero after S3 resume. > > This is a bug. Sorry Laszlo. :) > > > Not restore MSR_IA32_FEATURE_CONTROL during S3 resume does not affect > > at least Linux guest (tested 4.5). Current QEMU may advise the guest > > firmware to set bit 20 (for LMCE), bit 2 (for VMX) and bit 0 (lock > > bit). > > - For LMCE, Linux only checks bit 20 and bit 0 at boot time and then > > keeps using the result even after resume. > > On real hardware, LMCE would not be enabled after resume. I'm not > sure what would happen, but it wouldn't be good.
Could you help to check if the LMCE bit in MSR_IA32_FEATURE_CONTROL is set after S3 resume on the real hardware? Thanks, Haozhong _______________________________________________ SeaBIOS mailing list SeaBIOS@seabios.org https://www.coreboot.org/mailman/listinfo/seabios
