On 01/03/2024 14.45, Andrew Jones wrote:
On Fri, Mar 01, 2024 at 01:41:22PM +0100, Thomas Huth wrote:
On 26/02/2024 11.12, Nicholas Piggin wrote:
Add basic testing of various kinds of interrupts, machine check,
page fault, illegal, decrementer, trace, syscall, etc.
This has a known failure on QEMU TCG pseries machines where MSR[ME]
can be incorrectly set to 0.
Two questions out of curiosity:
Any chance that this could be fixed easily in QEMU?
Or is there a way to detect TCG from within the test? (for example, we have
a host_is_tcg() function for s390x so we can e.g. use report_xfail() for
tests that are known to fail on TCG there)
If there's nothing better, then it should be possible to check the
QEMU_ACCEL environment variable which will be there with the default
environ.
Well, but that's only available from the host side, not within the test
(i.e. the guest). So that does not help much with report_xfail...
I was rather thinking of something like checking the device tree, e.g. for
the compatible property in /hypervisor to see whether it's KVM or TCG...?
Thomas
