Luke Kenneth Casson Leighton
lkcl at lkcl.net
Sat May 29 00:51:37 UTC 2021
On Sat, May 29, 2021 at 1:21 AM Benjamin Herrenschmidt <
benh at kernel.crashing.org> wrote:
> You man in qemu ?
no, this is not qemu. if it was qemu, we would have raised a qemu
this is an entirely new project that makes **direct**use of kvm
**directly** calling the IOCTL for kvm single-step in the linux kernel.
You have MSR:FP set ?
the reason why the bugreport is being raised is because *there is no
*when running in non-single-step mode*.
when the guest program is run in "straight" (non-debugging,
it produces the *correct results*.
when the guest program is run in KVM IOCTL SINGLE STEP mode, *all FP
registers are zero*.
hence raising a linux kernel bug.
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