All,
Just to close the loop on this one. Over the weekend I upgraded the
machine with the "AMD EPYC 3201 8-Core Processor" to the latest
snapshot (and the VMs that run on it), and much like with Jesper
Wallin's Ryzen laptop, all is fine now.
Thanks again to Scott and Mike for the super quick fix!
Paul
On Mon, Oct 31, 2022 at 02:15:00PM +0100, Paul de Weerd wrote:
| On Mon, Oct 31, 2022 at 07:39:01AM -0500, Scott Cheloha wrote:
| | You get a #GP in your VM when trying to rdmsr(MSR_HWCR). My guess is
| | we need to expand the MSR read bitmap for SVM.
| |
| | This patch compiles, but I can't test it. Does it fix the panic?
|
| To test this patch, I'd have to upgrade the hypervisor. That's a bit
| more involved, I'll plan it ASAP and report back, but it may be a few
| days.
|
| Thank you Scott and Mike!
|
| Paul
|
| | CC dv@ mlarkin@
| |
| | Index: vmm.c
| | ===================================================================
| | RCS file: /cvs/src/sys/arch/amd64/amd64/vmm.c,v
| | retrieving revision 1.323
| | diff -u -p -r1.323 vmm.c
| | --- vmm.c 7 Sep 2022 18:44:09 -0000 1.323
| | +++ vmm.c 31 Oct 2022 12:38:30 -0000
| | @@ -2705,6 +2705,10 @@ vcpu_reset_regs_svm(struct vcpu *vcpu, s
| | /* allow reading TSC */
| | svm_setmsrbr(vcpu, MSR_TSC);
| |
| | + /* allow reading HWCR and PSTATEDEF for TSC calibration */
| | + svm_setmsrbr(vcpu, MSR_HWCR);
| | + svm_setmsrbr(vcpu, MSR_PSTATEDEF(0));
| | +
| | /* Guest VCPU ASID */
| | if (vmm_alloc_vpid(&asid)) {
| | DPRINTF("%s: could not allocate asid\n", __func__);
| |
|
| --
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| +++++++++++>-]<.>++[<------------>-]<+.--------------.[-]
| http://www.weirdnet.nl/
|
--
>++++++++[<++++++++++>-]<+++++++.>+++[<------>-]<.>+++[<+
+++++++++++>-]<.>++[<------------>-]<+.--------------.[-]
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