On 14/02/2017 22:50, Gerd Hoffmann wrote: > Hi, > >> Just for historical perspective - the reason I think qemu didn't >> implement the pam "read from rom and write to memory" mode is that I >> don't think there's a good way to emulate that with page tables (and >> the range needs to be executable so just making it all device memory >> isn't practical). > > A while back kvm got support for memory slots which allow read access > and vmexit on write access. Flash emulation needs this, and I think it > is possible to also implement the "read from rom and write to memory" > mode using that.
It would be very slow of course, but if the only writes are to TimerLast, perhaps that would work? Paolo _______________________________________________ SeaBIOS mailing list SeaBIOS@seabios.org https://www.coreboot.org/mailman/listinfo/seabios