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Wed, 27 Mar 2024 13:14:43 -0700 (PDT) Received: from [100.64.0.1] ([170.85.6.190]) by smtp.gmail.com with ESMTPSA id g8-20020a02b708000000b0047469b04c35sm3465108jam.65.2024.03.27.13.14.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 27 Mar 2024 13:14:43 -0700 (PDT) Message-ID: Date: Wed, 27 Mar 2024 15:14:41 -0500 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [External] [PATCH v6 05/13] riscv: Only send remote fences when some other CPU is online To: yunhui cui Cc: Palmer Dabbelt , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Alexandre Ghiti , Jisheng Zhang References: <20240327045035.368512-1-samuel.holland@sifive.com> <20240327045035.368512-6-samuel.holland@sifive.com> Content-Language: en-US From: Samuel Holland In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240327_131445_860033_B101DAD3 X-CRM114-Status: GOOD ( 18.14 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org SGkgWXVuaHVpLAoKT24gMjAyNC0wMy0yNyAxOjE2IEFNLCB5dW5odWkgY3VpIHdyb3RlOgo+IE9u IFdlZCwgTWFyIDI3LCAyMDI0IGF0IDEyOjUw4oCvUE0gU2FtdWVsIEhvbGxhbmQKPiA8c2FtdWVs LmhvbGxhbmRAc2lmaXZlLmNvbT4gd3JvdGU6Cj4+Cj4+IElmIG5vIG90aGVyIENQVSBpcyBvbmxp bmUsIGEgbG9jYWwgY2FjaGUgb3IgVExCIGZsdXNoIGlzIHN1ZmZpY2llbnQuCj4+IFRoZXNlIGNo ZWNrcyBjYW4gYmUgY29uc3RhbnQtZm9sZGVkIHdoZW4gU01QIGlzIGRpc2FibGVkLgo+Pgo+PiBT aWduZWQtb2ZmLWJ5OiBTYW11ZWwgSG9sbGFuZCA8c2FtdWVsLmhvbGxhbmRAc2lmaXZlLmNvbT4K Pj4gLS0tCj4+Cj4+IChubyBjaGFuZ2VzIHNpbmNlIHY0KQo+Pgo+PiBDaGFuZ2VzIGluIHY0Ogo+ PiAgLSBOZXcgcGF0Y2ggZm9yIHY0Cj4+Cj4+ICBhcmNoL3Jpc2N2L21tL2NhY2hlZmx1c2guYyB8 IDQgKysrLQo+PiAgYXJjaC9yaXNjdi9tbS90bGJmbHVzaC5jICAgfCA0ICsrKy0KPj4gIDIgZmls ZXMgY2hhbmdlZCwgNiBpbnNlcnRpb25zKCspLCAyIGRlbGV0aW9ucygtKQo+Pgo+PiBkaWZmIC0t Z2l0IGEvYXJjaC9yaXNjdi9tbS9jYWNoZWZsdXNoLmMgYi9hcmNoL3Jpc2N2L21tL2NhY2hlZmx1 c2guYwo+PiBpbmRleCBkNzZmYzczZTU5NGIuLmY1YmUxZmVjODE5MSAxMDA2NDQKPj4gLS0tIGEv YXJjaC9yaXNjdi9tbS9jYWNoZWZsdXNoLmMKPj4gKysrIGIvYXJjaC9yaXNjdi9tbS9jYWNoZWZs dXNoLmMKPj4gQEAgLTIxLDcgKzIxLDkgQEAgdm9pZCBmbHVzaF9pY2FjaGVfYWxsKHZvaWQpCj4+ ICB7Cj4+ICAgICAgICAgbG9jYWxfZmx1c2hfaWNhY2hlX2FsbCgpOwo+Pgo+PiAtICAgICAgIGlm IChyaXNjdl91c2Vfc2JpX2Zvcl9yZmVuY2UoKSkKPj4gKyAgICAgICBpZiAobnVtX29ubGluZV9j cHVzKCkgPCAyKQo+PiArICAgICAgICAgICAgICAgcmV0dXJuOwo+PiArICAgICAgIGVsc2UgaWYg KHJpc2N2X3VzZV9zYmlfZm9yX3JmZW5jZSgpKQo+PiAgICAgICAgICAgICAgICAgc2JpX3JlbW90 ZV9mZW5jZV9pKE5VTEwpOwo+PiAgICAgICAgIGVsc2UKPj4gICAgICAgICAgICAgICAgIG9uX2Vh Y2hfY3B1KGlwaV9yZW1vdGVfZmVuY2VfaSwgTlVMTCwgMSk7Cj4+IGRpZmYgLS1naXQgYS9hcmNo L3Jpc2N2L21tL3RsYmZsdXNoLmMgYi9hcmNoL3Jpc2N2L21tL3RsYmZsdXNoLmMKPj4gaW5kZXgg ZGE4MjEzMTVkNDNlLi4wOTAxYWE0N2I1OGYgMTAwNjQ0Cj4+IC0tLSBhL2FyY2gvcmlzY3YvbW0v dGxiZmx1c2guYwo+PiArKysgYi9hcmNoL3Jpc2N2L21tL3RsYmZsdXNoLmMKPj4gQEAgLTc5LDcg Kzc5LDkgQEAgc3RhdGljIHZvaWQgX19pcGlfZmx1c2hfdGxiX2FsbCh2b2lkICppbmZvKQo+Pgo+ PiAgdm9pZCBmbHVzaF90bGJfYWxsKHZvaWQpCj4+ICB7Cj4+IC0gICAgICAgaWYgKHJpc2N2X3Vz ZV9zYmlfZm9yX3JmZW5jZSgpKQo+PiArICAgICAgIGlmIChudW1fb25saW5lX2NwdXMoKSA8IDIp Cj4+ICsgICAgICAgICAgICAgICBsb2NhbF9mbHVzaF90bGJfYWxsKCk7Cj4+ICsgICAgICAgZWxz ZSBpZiAocmlzY3ZfdXNlX3NiaV9mb3JfcmZlbmNlKCkpCj4+ICAgICAgICAgICAgICAgICBzYmlf cmVtb3RlX3NmZW5jZV92bWFfYXNpZChOVUxMLCAwLCBGTFVTSF9UTEJfTUFYX1NJWkUsIEZMVVNI X1RMQl9OT19BU0lEKTsKPj4gICAgICAgICBlbHNlCj4+ICAgICAgICAgICAgICAgICBvbl9lYWNo X2NwdShfX2lwaV9mbHVzaF90bGJfYWxsLCBOVUxMLCAxKTsKPj4gLS0KPj4gMi40My4xCj4+Cj4g Cj4gRnJvbSBhIHBlcmNlcHR1YWwgcG9pbnQgb2YgdmlldywgdGhlIG1vZGlmaWNhdGlvbiBoZXJl IGlzIG5vdAo+IG5lY2Vzc2FyeS4gVGhlcmUgaXMgc3VjaCBsb2dpYyBpbiBvbl9lYWNoX2NwdSgp LiBDYW4geW91IHNoYXJlIHlvdXIKPiB0ZXN0IGRhdGE/CgpUaGUgbG9naWMgaW4gb25fZWFjaF9j cHUoKSBkb2Vzbid0IGFwcGx5IHdoZW4gcmlzY3ZfdXNlX3NiaV9mb3JfcmZlbmNlKCkgaXMKdHJ1 ZSwgc28gd2Ugd291bGQgbWFrZSB1bm5lY2Vzc2FyeSBTQkkgY2FsbHMsIGFuZCBjYW5ub3QgYmUg b3BwaW1pemVkIG91dCB3aGVuCkNPTkZJR19TTVA9bi4gVGhlIGNvdmVyIGxldHRlciBpbmNsdWRl cyBiZW5jaG1hcmtzIGZvciBhIHJlcHJlc2VudGF0aXZlCnNpbmdsZS1jb3JlIHN5c3RlbSAoRDEp LiBUaGVyZSB3YXMgbm8gbWVhc3VyYWJsZSBwZXJmb3JtYW5jZSBpbXBhY3QgZnJvbSB0aGlzCnBv cnRpb24gb2YgdGhlIHNlcmllcyBvbiBtdWx0aS1jb3JlIHN5c3RlbXMuIElmIHRoZXJlIGFyZSBz cGVjaWZpYyBiZW5jaG1hcmtzCnlvdSB0aGluayBJIHNob3VsZCBydW4sIHBsZWFzZSBsZXQgbWUg a25vdy4KClJlZ2FyZHMsClNhbXVlbAoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCmxpbnV4LXJpc2N2IG1haWxpbmcgbGlzdApsaW51eC1yaXNjdkBsaXN0 cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGlu Zm8vbGludXgtcmlzY3YK