On 27/10/2015 03:12, Fan, Jeff wrote: > Yes. On physical hw, Aps will not response SMI if Aps received SMI in > WFSI state. But Aps will have one pending SMI and will enter into SMM > once Aps receive Startup IPI.
Interesting... so if the BIOS doesn't do SMBASE relocation, an INIT-SMI-SIPI sequence will run code at 0x30000 in system management mode---thus letting the OS poke at SMRAM? Related to this, how is SMBASE relocation handled in the case where CPUs are hotplugged? Is there a race between any firmware code that does SMBASE relocation for the new code, and the OS which could overwrite the SMBASE relocation stub at address 0x30000? Paolo _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
