Re: linux-next: manual merge of the kvm tree with the tip tree

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On Thu, Oct 21, 2021 at 01:39:31PM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> Today's linux-next merge of the kvm tree got a conflict in:
> 
>   arch/x86/kvm/x86.c
> 
> between commit:
> 
>   126fe0401883 ("x86/fpu: Cleanup xstate xcomp_bv initialization")
> 
> from the tip tree and commits:
> 
>   5ebbc470d7f3 ("KVM: x86: Remove defunct setting of CR0.ET for guests during vCPU create")
>   e8f65b9bb483 ("KVM: x86: Remove defunct setting of XCR0 for guest during vCPU create")
>   583d369b36a9 ("KVM: x86: Fold fx_init() into kvm_arch_vcpu_create()")
> 
> 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/x86.c
> index 04350680b649,3ea4f6ef2474..000000000000
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@@ -10615,10 -10687,10 +10590,9 @@@ int kvm_arch_vcpu_create(struct kvm_vcp
>   		pr_err("kvm: failed to allocate vcpu's fpu\n");
>   		goto free_user_fpu;
>   	}
>  -	fpstate_init(&vcpu->arch.guest_fpu->state);
>  -	if (boot_cpu_has(X86_FEATURE_XSAVES))
>  -		vcpu->arch.guest_fpu->state.xsave.header.xcomp_bv =
>  -			host_xcr0 | XSTATE_COMPACTION_ENABLED;
>  +
>  +	fpu_init_fpstate_user(vcpu->arch.user_fpu);
>  +	fpu_init_fpstate_user(vcpu->arch.guest_fpu);
> - 	fx_init(vcpu);
>   
>   	vcpu->arch.maxphyaddr = cpuid_query_maxphyaddr(vcpu);
>   	vcpu->arch.reserved_gpa_bits = kvm_vcpu_reserved_gpa_bits_raw(vcpu);

LGTM too, thx Stephen!

-- 
Regards/Gruss,
    Boris.

SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg



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