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[217.213.93.172]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-3072a4ed4bcsm4854351fa.71.2025.01.17.08.11.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jan 2025 08:11:36 -0800 (PST) From: Uladzislau Rezki X-Google-Original-From: Uladzislau Rezki Date: Fri, 17 Jan 2025 17:11:30 +0100 To: Valentin Schneider Cc: Jann Horn , linux-kernel@vger.kernel.org, x86@kernel.org, virtualization@lists.linux.dev, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, linux-perf-users@vger.kernel.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, linux-arch@vger.kernel.org, rcu@vger.kernel.org, linux-hardening@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, bpf@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, Juergen Gross , Ajay Kaher , Alexey Makhalov , Russell King , Catalin Marinas , Will Deacon , Huacai Chen , WANG Xuerui , Paul Walmsley , Palmer Dabbelt , Albert Ou , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Peter Zijlstra , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , Boris Ostrovsky , Josh Poimboeuf , Pawan Gupta , Sean Christopherson , Paolo Bonzini , Andy Lutomirski , Arnd Bergmann , Frederic Weisbecker , "Paul E. McKenney" , Jason Baron , Steven Rostedt , Ard Biesheuvel , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Juri Lelli , Clark Williams , Yair Podemsky , Tomas Glozar , Vincent Guittot , Dietmar Eggemann , Ben Segall , Mel Gorman , Kees Cook , Andrew Morton , Christoph Hellwig , Shuah Khan , Sami Tolvanen , Miguel Ojeda , Alice Ryhl , "Mike Rapoport (Microsoft)" , Samuel Holland , Rong Xu , Nicolas Saenz Julienne , Geert Uytterhoeven , Yosry Ahmed , "Kirill A. Shutemov" , "Masami Hiramatsu (Google)" , Jinghao Jia , Luis Chamberlain , Randy Dunlap , Tiezhu Yang Subject: Re: [PATCH v4 29/30] x86/mm, mm/vmalloc: Defer flush_tlb_kernel_range() targeting NOHZ_FULL CPUs Message-ID: References: <20250114175143.81438-1-vschneid@redhat.com> <20250114175143.81438-30-vschneid@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250117_081139_786639_7DA4B13E X-CRM114-Status: GOOD ( 25.97 ) 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 T24gRnJpLCBKYW4gMTcsIDIwMjUgYXQgMDQ6MjU6NDVQTSArMDEwMCwgVmFsZW50aW4gU2NobmVp ZGVyIHdyb3RlOgo+IE9uIDE0LzAxLzI1IDE5OjE2LCBKYW5uIEhvcm4gd3JvdGU6Cj4gPiBPbiBU dWUsIEphbiAxNCwgMjAyNSBhdCA2OjUx4oCvUE0gVmFsZW50aW4gU2NobmVpZGVyIDx2c2NobmVp ZEByZWRoYXQuY29tPiB3cm90ZToKPiA+PiB2dW5tYXAoKSdzIGlzc3VlZCBmcm9tIGhvdXNla2Vl cGluZyBDUFVzIGFyZSBhIHJlbGF0aXZlbHkgY29tbW9uIHNvdXJjZSBvZgo+ID4+IGludGVyZmVy ZW5jZSBmb3IgaXNvbGF0ZWQgTk9IWl9GVUxMIENQVXMsIGFzIHRoZXkgYXJlIGhpdCBieSB0aGUK PiA+PiBmbHVzaF90bGJfa2VybmVsX3JhbmdlKCkgSVBJcy4KPiA+Pgo+ID4+IEdpdmVuIHRoYXQg Q1BVcyBleGVjdXRpbmcgaW4gdXNlcnNwYWNlIGRvIG5vdCBhY2Nlc3MgZGF0YSBpbiB0aGUgdm1h bGxvYwo+ID4+IHJhbmdlLCB0aGVzZSBJUElzIGNvdWxkIGJlIGRlZmVycmVkIHVudGlsIHRoZWly IG5leHQga2VybmVsIGVudHJ5Lgo+ID4+Cj4gPj4gRGVmZXJyYWwgdnMgZWFybHkgZW50cnkgZGFu Z2VyIHpvbmUKPiA+PiA9PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQo+ID4+Cj4g Pj4gVGhpcyByZXF1aXJlcyBhIGd1YXJhbnRlZSB0aGF0IG5vdGhpbmcgaW4gdGhlIHZtYWxsb2Mg cmFuZ2UgY2FuIGJlIHZ1bm1hcCdkCj4gPj4gYW5kIHRoZW4gYWNjZXNzZWQgaW4gZWFybHkgZW50 cnkgY29kZS4KPiA+Cj4gPiBJbiBvdGhlciB3b3JkcywgaXQgbmVlZHMgYSBndWFyYW50ZWUgdGhh dCBubyB2bWFsbG9jIGFsbG9jYXRpb25zIHRoYXQKPiA+IGhhdmUgYmVlbiBjcmVhdGVkIGluIHRo ZSB2bWFsbG9jIHJlZ2lvbiB3aGlsZSB0aGUgQ1BVIHdhcyBpZGxlIGNhbgo+ID4gdGhlbiBiZSBh Y2Nlc3NlZCBkdXJpbmcgZWFybHkgZW50cnksIHJpZ2h0Pwo+IAo+IEknbSBub3Qgc3VyZSBpZiB0 aGF0IHdvdWxkIGJlIGEgcHJvYmxlbSAobm90IGFuIG1tIGV4cGVydCwgcGxlYXNlIGRvCj4gY29y cmVjdCBtZSkgLSBsb29raW5nIGF0IHZtYXBfcGFnZXNfcmFuZ2UoKSwgZmx1c2hfY2FjaGVfdm1h cCgpIGlzbid0Cj4gZGVmZXJyZWQgYW55d2F5Lgo+IAo+IFNvIGFmdGVyIHZtYXBwaW5nIHNvbWV0 aGluZywgSSB3b3VsZG4ndCBleHBlY3QgaXNvbGF0ZWQgQ1BVcyB0byBoYXZlCj4gaW52YWxpZCBU TEIgZW50cmllcyBmb3IgdGhlIG5ld2x5IHZtYXBwZWQgcGFnZS4KPiAKPiBIb3dldmVyLCB1cG9u IHZ1bm1hcCdpbmcgc29tZXRoaW5nLCB0aGUgVExCIGZsdXNoIGlzIGRlZmVycmVkLCBhbmQgdGh1 cwo+IHN0YWxlIFRMQiBlbnRyaWVzIGNhbiBhbmQgd2lsbCByZW1haW4gb24gaXNvbGF0ZWQgQ1BV cywgdXAgdW50aWwgdGhleQo+IGV4ZWN1dGUgdGhlIGRlZmVycmVkIGZsdXNoIHRoZW1zZWx2ZXMg KElPVyBmb3IgdGhlIGVudGlyZSBkdXJhdGlvbiBvZiB0aGUKPiAiZGFuZ2VyIHpvbmUiKS4KPiAK PiBEb2VzIHRoYXQgbWFrZSBzZW5zZT8KPiAKUHJvYmFibHkgaSBhbSBtaXNzaW5nIHNvbWV0aGlu ZyBhbmQgbmVlZCB0byBoYXZlIGEgbG9vayBhdCB5b3VyIHBhdGNoZXMsCmJ1dCBob3cgZG8geW91 IGd1YXJhbnRlZSB0aGF0IG5vLW9uZSBtYXAgc2FtZSBhcmUgdGhhdCB5b3UgZGVmZXIgZm9yIFRM QgpmbHVzaGluZz8KCkFzIG5vdGVkIGJ5IEphbm4sIHdlIGFscmVhZHkgZGVmZXIgYSBUTEIgZmx1 c2hpbmcgYnkgYmFja2luZyBmcmVlZCBhcmVhcwp1bnRpbCBjZXJ0YWluIHRocmVzaG9sZCBhbmQg anVzdCBhZnRlciB3ZSBjcm9zcyBpdCB3ZSBkbyBhIGZsdXNoLgoKLS0KVWxhZHppc2xhdSBSZXpr aQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgt cmlzY3YgbWFpbGluZyBsaXN0CmxpbnV4LXJpc2N2QGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDov L2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1yaXNjdgo=