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Received: from dhcp-077-249-017-003.chello.nl ([77.249.17.3] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1o19e7-007uTz-7Y; Tue, 14 Jun 2022 16:44:05 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id BBDAE3002BE; Tue, 14 Jun 2022 18:44:02 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id A1F7228B3F630; Tue, 14 Jun 2022 18:44:02 +0200 (CEST) Date: Tue, 14 Jun 2022 18:44:02 +0200 From: Peter Zijlstra To: Nadav Amit Cc: "srivatsa@csail.mit.edu" , "juri.lelli@redhat.com" , "rafael@kernel.org" , Benjamin Herrenschmidt , "linus.walleij@linaro.org" , "bsegall@google.com" , "guoren@kernel.org" , "pavel@ucw.cz" , "agordeev@linux.ibm.com" , "linux-clk@vger.kernel.org" , linux-arch , "vincent.guittot@linaro.org" , "mpe@ellerman.id.au" , "chenhuacai@kernel.org" , "linux-acpi@vger.kernel.org" , "agross@kernel.org" , "geert@linux-m68k.org" , "linux-imx@nxp.com" , Catalin Marinas , "xen-devel@lists.xenproject.org" , "mattst88@gmail.com" , "borntraeger@linux.ibm.com" , "mturquette@baylibre.com" , "sammy@sammy.net" , "pmladek@suse.com" , "linux-pm@vger.kernel.org" , "jiangshanlai@gmail.com" , Sascha Hauer , "linux-um@lists.infradead.org" , "acme@kernel.org" , Thomas Gleixner , "linux-omap@vger.kernel.org" , "dietmar.eggemann@arm.com" , "rth@twiddle.net" , Greg Kroah-Hartman , LKML , "linux-perf-users@vger.kernel.org" , "senozhatsky@chromium.org" , "svens@linux.ibm.com" , "jolsa@kernel.org" , "paulus@samba.org" , "mark.rutland@arm.com" , "linux-ia64@vger.kernel.org" , Dave Hansen , Linux Virtualization , "James.Bottomley@hansenpartnership.com" , "jcmvbkbc@gmail.com" , "thierry.reding@gmail.com" , "kernel@xen0n.name" , "quic_neeraju@quicinc.com" , linux-s390 , "vschneid@redhat.com" , "john.ogness@linutronix.de" , "ysato@users.sourceforge.jp" , "linux-sh@vger.kernel.org" , "festevam@gmail.com" , "deller@gmx.de" , "daniel.lezcano@linaro.org" , "jonathanh@nvidia.com" , Mathieu Desnoyers , "frederic@kernel.org" , "lenb@kernel.org" , "linux-xtensa@linux-xtensa.org" , "kernel@pengutronix.de" , "gor@linux.ibm.com" , "linux-arm-msm@vger.kernel.org" , "linux-alpha@vger.kernel.org" , "linux-m68k@lists.linux-m68k.org" , "shorne@gmail.com" , "linux-arm-kernel@lists.infradead.org" , "chris@zankel.net" , "sboyd@kernel.org" , "dinguyen@kernel.org" , "bristot@redhat.com" , "alexander.shishkin@linux.intel.com" , "lpieralisi@kernel.org" , "linux@rasmusvillemoes.dk" , "joel@joelfernandes.org" , Will Deacon , Boris Ostrovsky , "khilman@kernel.org" , "linux-csky@vger.kernel.org" , Pv-drivers , "linux-snps-arc@lists.infradead.org" , Mel Gorman , "jacob.jun.pan@linux.intel.com" , Arnd Bergmann , "ulli.kroll@googlemail.com" , "vgupta@kernel.org" , "josh@joshtriplett.org" , Steven Rostedt , "rcu@vger.kernel.org" , Borislav Petkov , "bcain@quicinc.com" , "tsbogend@alpha.franken.de" , "linux-parisc@vger.kernel.org" , "sudeep.holla@arm.com" , "shawnguo@kernel.org" , "davem@davemloft.net" , "dalias@libc.org" , "tony@atomide.com" , "bjorn.andersson@linaro.org" , "H. Peter Anvin" , "sparclinux@vger.kernel.org" , "linux-hexagon@vger.kernel.org" , "linux-riscv@lists.infradead.org" , Anton Ivanov , "jonas@southpole.se" , "yury.norov@gmail.com" , "richard@nod.at" , X86 ML , "linux@armlinux.org.uk" , Ingo Molnar , "aou@eecs.berkeley.edu" , "paulmck@kernel.org" , "hca@linux.ibm.com" , "stefan.kristiansson@saunalahti.fi" , "openrisc@lists.librecores.org" , "paul.walmsley@sifive.com" , "linux-tegra@vger.kernel.org" , "namhyung@kernel.org" , "andriy.shevchenko@linux.intel.com" , "jpoimboe@kernel.org" , Juergen Gross , "monstr@monstr.eu" , "linux-mips@vger.kernel.org" , "palmer@dabbelt.com" , "anup@brainfault.org" , "ink@jurassic.park.msu.ru" , "johannes@sipsolutions.net" , linuxppc-dev Subject: Re: [Pv-drivers] [PATCH 29/36] cpuidle, xenpv: Make more PARAVIRT_XXL noinstr clean Message-ID: References: <20220608142723.103523089@infradead.org> <20220608144517.759631860@infradead.org> <510b9b68-7d53-7d4d-5a05-37fbd199eb4b@csail.mit.edu> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Mailman-Approved-At: Tue, 14 Jun 2022 10:23:02 -0700 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 T24gTW9uLCBKdW4gMTMsIDIwMjIgYXQgMDc6MjM6MTNQTSArMDAwMCwgTmFkYXYgQW1pdCB3cm90 ZToKPiBPbiBKdW4gMTMsIDIwMjIsIGF0IDExOjQ4IEFNLCBTcml2YXRzYSBTLiBCaGF0IDxzcml2 YXRzYUBjc2FpbC5taXQuZWR1PiB3cm90ZToKPiAKPiA+IOKaoCBFeHRlcm5hbCBFbWFpbAo+ID4g Cj4gPiBPbiA2LzgvMjIgNDoyNyBQTSwgUGV0ZXIgWmlqbHN0cmEgd3JvdGU6Cj4gPj4gdm1saW51 eC5vOiB3YXJuaW5nOiBvYmp0b29sOiBhY3BpX2lkbGVfZW50ZXJfczJpZGxlKzB4ZGU6IGNhbGwg dG8gd2JpbnZkKCkgbGVhdmVzIC5ub2luc3RyLnRleHQgc2VjdGlvbgo+ID4+IHZtbGludXgubzog d2FybmluZzogb2JqdG9vbDogZGVmYXVsdF9pZGxlKzB4NDogY2FsbCB0byBhcmNoX3NhZmVfaGFs dCgpIGxlYXZlcyAubm9pbnN0ci50ZXh0IHNlY3Rpb24KPiA+PiB2bWxpbnV4Lm86IHdhcm5pbmc6 IG9ianRvb2w6IHhlbl9zYWZlX2hhbHQrMHhhOiBjYWxsIHRvIEhZUEVSVklTT1Jfc2NoZWRfb3Au Y29uc3Rwcm9wLjAoKSBsZWF2ZXMgLm5vaW5zdHIudGV4dCBzZWN0aW9uCj4gPj4gCj4gPj4gU2ln bmVkLW9mZi1ieTogUGV0ZXIgWmlqbHN0cmEgKEludGVsKSA8cGV0ZXJ6QGluZnJhZGVhZC5vcmc+ Cj4gPiAKPiA+IFJldmlld2VkLWJ5OiBTcml2YXRzYSBTLiBCaGF0IChWTXdhcmUpIDxzcml2YXRz YUBjc2FpbC5taXQuZWR1Pgo+ID4gCj4gPj4gCj4gPj4gLXN0YXRpYyBpbmxpbmUgdm9pZCB3Ymlu dmQodm9pZCkKPiA+PiArZXh0ZXJuIG5vaW5zdHIgdm9pZCBwdl9uYXRpdmVfd2JpbnZkKHZvaWQp Owo+ID4+ICsKPiA+PiArc3RhdGljIF9fYWx3YXlzX2lubGluZSB2b2lkIHdiaW52ZCh2b2lkKQo+ ID4+IHsKPiA+PiAgICAgIFBWT1BfQUxUX1ZDQUxMMChjcHUud2JpbnZkLCAid2JpbnZkIiwgQUxU X05PVChYODZfRkVBVFVSRV9YRU5QVikpOwo+ID4+IH0KPiAKPiBJIGd1ZXNzIGl0IGlzIHlldCBh bm90aGVyIGluc3RhbmNlIG9mIHdyb25nIGFjY291bnRpbmcgb2YgR0NDIGZvcgo+IHRoZSBhc3Nl bWJseSBibG9ja3PigJkgd2VpZ2h0LiBJIGd1ZXNzIGl0IGlzIG5vdCBhIHNvbHV0aW9uIGZvciBv bGRlcgo+IEdDQ3MsIGJ1dCBwcmVzdW1hYmx5IF9fX19QVk9QX0FMVF9DQUxMKCkgYW5kIGZyaWVu ZHMgc2hvdWxkIGhhdmUKPiB1c2VkIGFzbV9pbmxpbmUgb3Igc29tZSBuZXcg4oCcYXNtX3ZvbGF0 aWxlX2lubGluZeKAnSB2YXJpYW50LgoKUGFydGlhbGx5LCBzb21lIG9mIHRoZSAqU0FOIG9wdGlv bnMgYWxzbyBnZW5lcmF0ZSBhIG1ldHJpYyB0b24gb2YKbm9uc2Vuc2Ugd2hlbiBlbmFibGVkIGFu ZCBza2V3IHRoZSBjb21waWxlcnMgdG93YXJkcyBub3QgaW5saW5pbmcKdGhpbmdzLgoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtcmlzY3YgbWFp bGluZyBsaXN0CmxpbnV4LXJpc2N2QGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmlu ZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1yaXNjdgo=