On Fri, Aug 22, 2008 at 09:56:16AM -0400, Jimi Xenidis wrote: > Sorry, I have not really been following this, I assume you are > replacing SPR accesses with load/stores that do not trap. > I believe thats fine for reading any SPR, but not true for modifying > some SPRs, particularly MSR. > IMHO you must trap on any instruction that modifies the MSR. > So you should prolly not rewrite mtmsr or wrtee* but let them trap.
You only need to trap when changing MSR[EE] if there's a pending interrupt. The hypervisor can change the mapping of the shared page when it is unable to deliver an interrupt due to the virtual EE value being zero. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
