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([2a0c:5a80:3c10:3400:3c70:6643:6e71:7eae]) by smtp.gmail.com with ESMTPSA id k37sm2413311wms.21.2021.11.30.03.28.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Nov 2021 03:28:42 -0800 (PST) Message-ID: <8719ad46cc29a2c5d7baac3c35770e5460ab8d5c.camel@redhat.com> Subject: Question WRT early IRQ/NMI entry code From: Nicolas Saenz Julienne To: linux-kernel , linux-arm-kernel , rcu@vger.kernel.org Cc: Thomas Gleixner , Peter Zijlstra , Mark Rutland , Steven Rostedt , paulmck@kernel.org, mtosatti , frederic Date: Tue, 30 Nov 2021 12:28:41 +0100 User-Agent: Evolution 3.42.1 (3.42.1-1.fc35) MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=nsaenzju@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211130_032847_154252_0F97E296 X-CRM114-Status: GOOD ( 10.26 ) 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGkgQWxsLAp3aGlsZSBnb2luZyBvdmVyIHRoZSBJUlEvTk1JIGVudHJ5IGNvZGUgSSd2ZSBmb3Vu ZCBhIHNtYWxsICdpbmNvbnNpc3RlbmN5JzoKd2hpbGUgaW4gdGhlIElSUSBlbnRyeSBwYXRoLCB3 ZSBpbmZvcm0gUkNVIG9mIHRoZSBjb250ZXh0IGNoYW5nZSAqYmVmb3JlKgppbmNyZW1lbnRpbmcg dGhlIHByZWVtcHQgY291bnRlciwgdGhlIG9wcG9zaXRlIGhhcHBlbnMgZm9yIHRoZSBOTUkgZW50 cnkKcGF0aC4gVGhpcyBhcHBsaWVzIHRvIGJvdGggYXJtNjQgYW5kIHg4NlsxXS4KCkFjdHVhbGx5 LCByY3Vfbm1pX2VudGVyKCkg4oCUIHdoaWNoIGlzIGFsc28gdGhlIG1haW4gUkNVIGNvbnRleHQg c3dpdGNoIGZ1bmN0aW9uCmZvciB0aGUgSVJRIGVudHJ5IHBhdGgg4oCUIHVzZXMgdGhlIHByZWVt cHQgY291bnRlciB0byB2ZXJpZnkgaXQncyBub3QgaW4gTk1JCmNvbnRleHQuIFNvIGl0IHdvdWxk IG1ha2Ugc2Vuc2UgdG8gYXNzdW1lIGFsbCBjYWxsZXJzIGhhdmUgdGhlIHNhbWUgdXBkYXRlZAp2 aWV3IG9mIHRoZSBwcmVlbXB0IGNvdW50LCB3aGljaCBpc24ndCB0cnVlIEFUTS4KCkknbSBzdXJl IHRoZXJlIGFuIG9ic2N1cmUvbm9uLW9idmlvdXMgcmVhc29uIGZvciB0aGlzLCByaWdodD8KClRo YW5rcyEKTmljb2xhcwoKWzFdIApJUlEgcGF0aDoKICAtPiB4ODZfNjQgYXNtIChlbnRyeV82NC5T KQogIC0+IGlycWVudHJ5X2VudGVyKCkgLT4gcmN1X2lycV9lbnRlcigpIC0+ICpyY3Vfbm1pX2Vu dGVyKCkqCiAgLT4gcnVuX2lycV9vbl9pcnFzdGFja19jb25kKCkgLT4gaXJxX2V4aXRfcmN1KCkg LT4gKnByZWVtcHRfY291bnRfYWRkKEhBUkRJUlFfT0ZGU0VUKSoKICAtPiAvLyBSdW4gSVJRLi4u CgpOTUkgcGF0aDoKICAtPiB4ODZfNjQgYXNtIChlbnRyeV82NC5TKQogIC0+IGlycWVudHJ5X25t aV9lbnRlcigpIC0+IF9fbm1pX2VudGVyKCkgLT4gKl9fcHJlZW1wdF9jb3VudF9hZGQoTk1JX09G RlNFVCArIEhBUkRJUlFfT0ZGU0VUKSoKICAgICAgICAgICAgICAgICAgICAgICAgICAtPiAqcmN1 X25taV9lbnRlcigpKgoKRm9yIGFybTY0LCBzZWUgJ2FyY2gvYXJtNjQva2VybmVsL2VudHJ5LWNv bW1vbi5jJy4KCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmlu ZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9s aW51eC1hcm0ta2VybmVsCg==