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([2001:b07:add:ec09:c399:bc87:7b6c:fb2a]) by smtp.googlemail.com with ESMTPSA id w5sm1912110edc.58.2021.12.02.02.31.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 02 Dec 2021 02:31:39 -0800 (PST) Message-ID: <6200f141-8e6f-fe68-9539-22aa68559cb7@redhat.com> Date: Thu, 2 Dec 2021 11:31:28 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [PATCH v2 11/43] KVM: Don't block+unblock when halt-polling is successful Content-Language: en-US To: Sean Christopherson , Maxim Levitsky Cc: Marc Zyngier , Huacai Chen , Aleksandar Markovic , Paul Mackerras , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , James Morse , Alexandru Elisei , Suzuki K Poulose , Atish Patra , David Hildenbrand , Cornelia Huck , Claudio Imbrenda , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, David Matlack , Oliver Upton , Jing Zhang , Wei Huang References: <20211009021236.4122790-1-seanjc@google.com> <20211009021236.4122790-12-seanjc@google.com> <4e883728e3e5201a94eb46b56315afca5e95ad9c.camel@redhat.com> <496c2fc6-26b0-9b5d-32f4-2f9e9dd6a064@redhat.com> <880a5727-69d1-72a1-b129-b053781625ad@redhat.com> <458c0819a578ba854f00089bc312c8faa177a81a.camel@redhat.com> <32eabe7d270e5a466ba2d9345b4270b8fe27700c.camel@redhat.com> From: Paolo Bonzini In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211202_023142_415023_36028864 X-CRM114-Status: GOOD ( 14.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMTIvMi8yMSAwMzowMCwgU2VhbiBDaHJpc3RvcGhlcnNvbiB3cm90ZToKPiBIbW0sIHRoYXQg c3VnZ2VzdHMgdGhlIGJ1Zy9lcnJhdHVtIGlzIGR1ZSB0byB0aGUgQ1BVIGNvbnN1bWluZyBzdGFs ZSBkYXRhIGZyb20gIzQKPiBmb3IgdGhlIElzUnVubmluZyBjaGVjayBpbiAjNSwgb3IgcmV0aXJp bmcgdW9wcyBmb3IgdGhlIElzUnVubmluZyBjaGVjayBiZWZvcmUKPiByZXRpcmluZyB0aGUgdklS UiB1cGRhdGUuCgpZZXMsIHRoaXMgc2VlbXMgdG8gYmUgYW4gZXJyb3IgaW4gdGhlIGltcGxlbWVu dGF0aW9uIG9mIHN0ZXAgNS4gIEluIAphc3NlbWJseSwgYXRvbWljIG9wZXJhdGlvbnMgaGF2ZSBp bXBsaWNpdCBtZW1vcnkgYmFycmllcnMsIGJ1dCB3aG8ga25vd3MgCndoYXQncyBnb2luZyBvbiBp biBtaWNyb2NvZGUuICBTbyBlaXRoZXIgaXQncyB0aGUgZm9ybWVyLCBvciBzb21ldGhpbmcgCmlz IGdvaW5nIG9uIHRoYXQncyBzcGVjaWZpYyB0byB0aGUgbWljcm9jb2RlIHNlcXVlbmNlciwgb3Ig aXQncyBhIG1vcmUgCm11bmRhbmUgaW1wbGVtZW50YXRpb24gYnVnLgoKSW4gYW55IGNhc2UsIEFW SUMgaXMgZGlzYWJsZWQgZm9yIG5vdyBhbmQgd2lsbCBuZWVkIGEgbGlzdCBvZiBtb2RlbCAKd2hl cmUgaXQgd29ya3MsIHNvIEknbGwgZ28gb24gYW5kIHF1ZXVlIHRoZSBmaXJzdCBwYXJ0IG9mIHRo aXMgc2VyaWVzLgoKUGFvbG8KCj4gSXQgd291bGQgYmUgaGVscGZ1bCBpZiB0aGUgZXJyYXR1bSBh Y3R1YWxseSBwcm92aWRlZAo+IGluZm8gb24gdGhlICJoaWdobHkgc3BlY2lmaWMgYW5kIGRldGFp bGVkIHNldCBvZiBpbnRlcm5hbCB0aW1pbmcgY29uZGl0aW9ucyIuIDotLwo+IAo+ICAgIDQuIExv b2t1cCB0aGUgdkFQSUMgYmFja2luZyBwYWdlIGFkZHJlc3MgaW4gdGhlIFBoeXNpY2FsIEFQSUMg dGFibGUgdXNpbmcgdGhlCj4gICAgICAgZ3Vlc3QgcGh5c2ljYWwgQVBJQyBJRCBhcyBhbiBpbmRl eCBpbnRvIHRoZSB0YWJsZS4KPiAgICA1LiBGb3IgZXZlcnkgdmFsaWQgZGVzdGluYXRpb246Cj4g ICAgICAgLSBBdG9taWNhbGx5IHNldCB0aGUgYXBwcm9wcmlhdGUgSVJSIGJpdCBpbiBlYWNoIG9m IHRoZSBkZXN0aW5hdGlvbnPigJkgdkFQSUMKPiAgICAgICAgIGJhY2tpbmcgcGFnZS4KPiAgICAg ICAtIENoZWNrIHRoZSBJc1J1bm5pbmcgc3RhdHVzIG9mIGVhY2ggZGVzdGluYXRpb24uCgoKX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtl cm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0 dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5l bAo=