On 15 November 2017 at 01:14, Alistair Francis <[email protected]> wrote: > On Tue, Nov 7, 2017 at 7:01 AM, Peter Maydell <[email protected]> > wrote: >> The CPU ID registers ID_AA64PFR0_EL1, ID_PFR1_EL1 and ID_PFR1 >> have a field for reporting presence of GICv3 system registers. >> We need to report this field correctly in order for Xen to >> work as a guest inside QEMU emulation. We mustn't incorrectly >> claim the sysregs exist when they don't, though, or Linux will >> crash. >> >> Unfortunately the way we've designed the GICv3 emulation in QEMU >> puts the system registers as part of the GICv3 device, which >> may be created after the CPU proper has been realized. This >> means that we don't know at the point when we define the ID >> registers what the correct value is. Handle this by switching >> them to calling a function at runtime to read the value, where >> we can fill in the GIC field appropriately. >> >> Signed-off-by: Peter Maydell <[email protected]> > > Is this going to make it into 2.11?
Yes, it's supposed to go into 2.11 -- I think I just forgot to put it in the rc1 pullreq, but it'll go in rc2. thanks -- PMM
