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Date: Tue, 19 Dec 2017 11:42:20 +0100 From: Paolo Bonzini <pbonzini@...hat.com> To: kvm@...r.kernel.org, x86@...nel.org, linux-kernel@...r.kernel.org, rkrcmar@...hat.com, Xiao Guangrong <xiaoguangrong.eric@...il.com>, Dan Williams <dan.j.williams@...el.com>, ivan.d.cuevas.escareno@...el.com, karthik.kumar@...el.com, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>, Olif Chapman <olif.chapman@...cle.com>, Mikulas Patocka <mpatocka@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...e.de>, Tom Lendacky <thomas.lendacky@....com> Subject: Re: [PATCH v5 1/2] x86/mm: add a function to check if a pfn is UC/UC- On 19/12/2017 03:40, Haozhong Zhang wrote: >> As discussed in the reply to v2, this should include WC too. The >> function name could become something like pat_pfn_downgraded_by_uc_mtrr. > > Or shall we just expose lookup_memtype(), and keep all other logic in > KVM? The function name still looks strange somehow, and the check of > memory type makes more sense and would be easier to understand in the > context of KVM. I agree that it's a bit strange, but I don't want to go against the suggestions of the x86 maintainer. Paolo
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