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[92.12.44.130]) by smtp.gmail.com with ESMTPSA id v7-20020a1709064e8700b00977cad140a8sm1674597eju.218.2023.09.14.18.16.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 14 Sep 2023 18:16:51 -0700 (PDT) Message-ID: <6575702e-fea5-61b2-dd61-7b556a8603e8@citrix.com> Date: Fri, 15 Sep 2023 02:16:50 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.1 From: andrew.cooper3@citrix.com Subject: Re: [PATCH v10 03/38] x86/msr: Add the WRMSRNS instruction support Content-Language: en-GB To: "H. Peter Anvin" , Thomas Gleixner , Xin Li , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, linux-hyperv@vger.kernel.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org Cc: mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, luto@kernel.org, pbonzini@redhat.com, seanjc@google.com, peterz@infradead.org, jgross@suse.com, ravi.v.shankar@intel.com, mhiramat@kernel.org, jiangshanlai@gmail.com References: <20230914044805.301390-1-xin3.li@intel.com> <20230914044805.301390-4-xin3.li@intel.com> <6f5678ff-f8b1-9ada-c8c7-f32cfb77263a@citrix.com> <87y1h81ht4.ffs@tglx> <7ba4ae3e-f75d-66a8-7669-b6eb17c1aa1c@citrix.com> <0e7d37db-e1af-ac40-6eca-5565d1bebcde@zytor.com> In-Reply-To: <0e7d37db-e1af-ac40-6eca-5565d1bebcde@zytor.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Thu, 14 Sep 2023 18:16:58 -0700 (PDT) On 15/09/2023 2:01 am, H. Peter Anvin wrote: > The whole bit with alternatives and pvops being separate is a major > maintainability problem, and honestly it never made any sense in the > first place. Never have two mechanisms to do one job; it makes it > harder to grok their interactions. This bit is easy. Juergen has already done the work to delete one of these two patching mechanisms and replace it with the other. https://lore.kernel.org/lkml/a32e211f-4add-4fb2-9e5a-480ae9b9bbf2@suse.com/ Unfortunately, it's only collecting pings and tumbleweeds. ~Andrew