Hi all,
On Mon, 28 Aug 2017 14:52:09 +1000 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> Today's linux-next merge of the kvm tree got a conflict in:
>
> arch/x86/kvm/mmu.c
>
> between commit:
>
> ea2800ddb20d ("kvm/x86: Avoid clearing the C-bit in rsvd_bits()")
>
> from the tip tree and commit:
>
> d6321d493319 ("KVM: x86: generalize guest_cpuid_has_ helpers")
>
> from the kvm tree.
>
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging. You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
>
> --
> Cheers,
> Stephen Rothwell
>
> diff --cc arch/x86/kvm/mmu.c
> index 04d750813c9d,2a8a6e3e2a31..000000000000
> --- a/arch/x86/kvm/mmu.c
> +++ b/arch/x86/kvm/mmu.c
> @@@ -4116,21 -4157,11 +4162,21 @@@ reset_shadow_zero_bits_mask(struct kvm_
> * Passing "true" to the last argument is okay; it adds a check
> * on bit 8 of the SPTEs which KVM doesn't use anyway.
> */
> - __reset_rsvds_bits_mask(vcpu, &context->shadow_zero_check,
> + shadow_zero_check = &context->shadow_zero_check;
> + __reset_rsvds_bits_mask(vcpu, shadow_zero_check,
> boot_cpu_data.x86_phys_bits,
> context->shadow_root_level, uses_nx,
> - guest_cpuid_has_gbpages(vcpu), is_pse(vcpu),
> - true);
> + guest_cpuid_has(vcpu, X86_FEATURE_GBPAGES),
> + is_pse(vcpu), true);
> +
> + if (!shadow_me_mask)
> + return;
> +
> + for (i = context->shadow_root_level; --i >= 0;) {
> + shadow_zero_check->rsvd_bits_mask[0][i] &= ~shadow_me_mask;
> + shadow_zero_check->rsvd_bits_mask[1][i] &= ~shadow_me_mask;
> + }
> +
> }
> EXPORT_SYMBOL_GPL(reset_shadow_zero_bits_mask);
>
Just a reminder that this conflict still exists.
--
Cheers,
Stephen Rothwell
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