Re: [PATCH] KVM: selftests: Wait mprotect_ro_done before write to RO in mmu_stress_test

[Sean Christopherson]

On Fri, Feb 28, 2025, Yan Zhao wrote:
> On Thu, Feb 27, 2025 at 02:18:02PM -0800, Sean Christopherson wrote:
> > On Thu, Feb 27, 2025, Yan Zhao wrote:
> So, I think the right one is:
> -	} while (!READ_ONCE(mprotect_ro_done));
> +	} while (!READ_ONCE(mprotect_ro_done) || !READ_ONCE(all_vcpus_hit_ro_fault));

/double facepalm

You're 100% correct.  I did most of my testing with just the all_vcpus_hit_ro_fault
check, and then botched things when adding back mprotect_ro_done.