On 26.05.2011, at 18:09, Nathan Whitehorn wrote: > ** Patch added: "mtmstr.diff" > > https://bugs.launchpad.net/bugs/788697/+attachment/2143748/+files/mtmstr.diff > > -- > You received this bug notification because you are a member of qemu- > devel-ml, which is subscribed to QEMU. > https://bugs.launchpad.net/bugs/788697 > > Title: > [PowerPC] [patch] mtmsr does not preserve high bits of MSR > > Status in QEMU: > New > > Bug description: > The mtmsr instruction on 64-bit PPC does not preserve the high-order > 32-bits of the MSR the way it is supposed to, instead setting them to > 0, which takes 64-bit code out of 64-bit mode. There is some code that > does the right thing, but it brokenly only preserves these bits when > the thread is not in 64-bit mode (i.e. when it doesn't matter). The > attached patch unconditionally enables this code when TARGET_PPC64 is > set, per the ISA spec, which fixes early boot failures trying to start > FreeBSD/powerpc64 under qemu. >
Please send the patch as proper patch to the ML and CC me. Alex