On 07/07/21 14:09, Naresh Kamboju wrote:
On Fri, 25 Jun 2021 at 14:35, Paolo Bonzini pbonzini@redhat.com wrote:
On 25/06/21 00:33, Sean Christopherson wrote:
On Tue, Jun 15, 2021, Sean Christopherson wrote:
WARN if NX is reported as supported but not enabled in EFER. All flavors of the kernel, including non-PAE 32-bit kernels, set EFER.NX=1 if NX is supported, even if NX usage is disable via kernel command line.
Ugh, I misread .Ldefault_entry in head_32.S, it skips over the entire EFER code if PAE=0. Apparently I didn't test this with non-PAE paging and EPT?
Paolo, I'll send a revert since it's in kvm/next, but even better would be if you can drop the patch :-) Lucky for me you didn't pick up patch 4/4 that depends on this...
I'll revisit this mess in a few weeks.
Rather, let's keep this, see if anyone complains and possibly add a "depends on X86_PAE || X86_64" to KVM.
[ please ignore if this is already reported ]
The following kernel warning noticed while booting linus master branch and Linux next 20210707 tag on i386 kernel booting on x86_64 machine.
Ok, so the "depends on" is needed. Let's add it, I'm getting back to KVM work and will send the patch today or tomorrow.
Paolo