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[79.27.108.198]) by smtp.gmail.com with ESMTPSA id q12-20020a056000136c00b0021e47fb24a2sm14511127wrz.19.2022.08.02.04.02.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Aug 2022 04:02:26 -0700 (PDT) From: "Fabio M. De Francesco" To: Baoquan He Cc: Eric Biederman , kexec@lists.infradead.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, Ira Weiny Subject: Re: [PATCH v2] kexec: Replace kmap() with kmap_local_page() Date: Tue, 02 Aug 2022 13:02:25 +0200 Message-ID: <5847084.alqRGMn8q6@opensuse> In-Reply-To: References: <20220707231550.1484-1-fmdefrancesco@gmail.com> <1923146.PYKUYFuaPT@opensuse> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220802_040231_490118_8679C0A3 X-CRM114-Status: GOOD ( 23.72 ) X-BeenThere: kexec@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: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org T24gbWFydGVkw6wgMiBhZ29zdG8gMjAyMiAwOTozMjo0NiBDRVNUIEJhb3F1YW4gSGUgd3JvdGU6 Cj4gT24gMDgvMDIvMjIgYXQgMDg6MjBhbSwgRmFiaW8gTS4gRGUgRnJhbmNlc2NvIHdyb3RlOgo+ ID4gT24gbWFydGVkw6wgMiBhZ29zdG8gMjAyMiAwNTowNjo1NCBDRVNUIEJhb3F1YW4gSGUgd3Jv dGU6Cj4gPiA+IE9uIDA3LzA4LzIyIGF0IDAxOjE1YW0sIEZhYmlvIE0uIERlIEZyYW5jZXNjbyB3 cm90ZToKPiA+ID4gPiBUaGUgdXNlIG9mIGttYXAoKSBhbmQga21hcF9hdG9taWMoKSBhcmUgYmVp bmcgZGVwcmVjYXRlZCBpbiBmYXZvciAKb2YKPiA+ID4gPiBrbWFwX2xvY2FsX3BhZ2UoKS4KPiA+ ID4gPiAKPiA+ID4gPiBXaXRoIGttYXBfbG9jYWxfcGFnZSgpLCB0aGUgbWFwcGluZ3MgYXJlIHBl ciB0aHJlYWQsIENQVSBsb2NhbCBhbmQgCm5vdAo+ID4gPiA+IGdsb2JhbGx5IHZpc2libGUuIEZ1 cnRoZXJtb3JlLCB0aGUgbWFwcGluZ3MgY2FuIGJlIGFjcXVpcmVkIGZyb20gCmFueQo+ID4gPiA+ IGNvbnRleHQgKGluY2x1ZGluZyBpbnRlcnJ1cHRzKS4KPiA+ID4gPiAKPiA+ID4gPiBUaGVyZWZv cmUsIHVzZSBrbWFwX2xvY2FsX3BhZ2UoKSBpbiBrZXhlY19jb3JlLmMgYmVjYXVzZSB0aGVzZSAK bWFwcGluZ3MgCj4gPiBhcmUKPiA+ID4gPiBwZXIgdGhyZWFkLCBDUFUgbG9jYWwsIGFuZCBub3Qg Z2xvYmFsbHkgdmlzaWJsZS4KPiA+ID4gPiAKPiA+ID4gPiBUZXN0ZWQgb24gYSBRRU1VICsgS1ZN IDMyLWJpdHMgVk0gYm9vdGluZyBhIGtlcm5lbCB3aXRoIEhJR0hNRU02NEdCCj4gPiA+ID4gZW5h YmxlZC4KPiA+ID4gCj4gPiA+IFdvbmRlcmluZyB3aGF0IGFyY2ggeW91IHRlc3RlZCB3aXRoLgo+ ID4gCj4gPiBJJ20gc29ycnksIEkgZm9yZ290IHRvIHNheSB0aGF0IEkgdXNlIHg4Nl8zMiB3aXRo IDRHQiB0byA2R0IgUkFNLgo+ID4gVGhpcyBpcyB1c3VhbGx5IGFuIGluZm9ybWF0aW9uIHRoYXQg SSBhZGQgaW4gdGhlIGNvbW1pdCBtZXNzYWdlcyBvZiBhbGwgCnRoZSAKPiA+IHJlY2VudCBjb252 ZXJzaW9ucyBJJ20gd29ya2luZyBvbiBhY3Jvc3MgdGhlIGVudGlyZSBrZXJuZWwuCj4gPiAKPiA+ IEFub3RoZXIgaW1wb3J0YW50IGluZm9ybWF0aW9uIChvdmVybG9va2VkIGFnYWluIHRoaXMgdGlt ZSkgaXMgdGhhdCAoMSkgCj4gPiBrbWFwKCkgY29tZXMgd2l0aCBhbiBvdmVyaGVhZCBhcyBtYXBw aW5nIHNwYWNlIGlzIHJlc3RyaWN0ZWQgYW5kIApwcm90ZWN0ZWQgCj4gPiBieSBhIGdsb2JhbCBs b2NrIGZvciBzeW5jaHJvbml6YXRpb24gYW5kICgyKSBpdCBhbHNvIHJlcXVpcmVzIGdsb2JhbCAK VExCIAo+ID4gaW52YWxpZGF0aW9uIHdoZW4gdGhlIGttYXDigJlzIHBvb2wgd3JhcHMgYW5kIGl0 IG1pZ2h0IGJsb2NrIHdoZW4gdGhlIAptYXBwaW5nIAo+ID4gc3BhY2UgaXMgZnVsbHkgdXRpbGl6 ZWQgdW50aWwgYSBzbG90IGJlY29tZXMgYXZhaWxhYmxlLgo+IAo+IFRoYW5rcyBhIGxvdCBmb3Ig dXBkYXRlIHdpdGggbW9yZSBkZXRhaWxzLCBGYWJpby4KCllvdSdyZSB3ZWxjb21lLgoKPiBNYXli ZSB0aGVzZSBjYW4gYmUKPiBhZGRlZCBpbnRvIGxvZyB3aXRoIHYzIGlmIHlvdSB0aGluayB0aGV5 IGFyZSB3b3J0aCBhZGRpbmcsIGFuZCB3aXRoIG15Cj4gQWNrIHNpbmNlIG5vIGNvZGUgY2hhbmdl IHJlbGF0ZWQuIFlvdSBkZWNpZGUuCgpGb3Igd2Vla3MgSSd2ZSBiZWVuIHRoaW5raW5nIHRoYXQg dGhlc2UgZGV0YWlscyB3ZXJlIG5vdCBuZWNlc3NhcnkgaW4gdGhlIApjb21taXQgbWVzc2FnZSBv ZiB0aGVzZSBjb252ZXJzaW9ucy4gTGF0ZXIgSSByZWFsaXplZCB0aGF0IGEgZmFpciBudW1iZXIg b2YgCm1haW50YWluZXJzIHdlcmVuJ3QgYXdhcmUgb2Ygd2h5IHdlIHNob3VsZCBjaGFuZ2Ugc29t ZXRoaW5nIHRoYXQgaGFkIGJlZW4gCndvcmtpbmcgInByb3Blcmx5IiBmb3IgeWVhcnMuIFBlcmhh cHMgdGhleSB0aG91Z2h0IHRoYXQgd2Ugd291bGQgZmFjZSB0b28gCm1hbnkgcmlza3Mgb2YgYnJl YWtpbmcgdGhpbmdzIHZlcnN1cyBsaXR0bGUgcmV3YXJkcy4KCkFmdGVyIGRpc2N1c3Npbmcgd2l0 aCBHcmVnIEstSCAod2hvIHdhcyBpbml0aWFsbHkgbm90IGZvbmQgb2YgdGhlc2UgY2hhbmdlcyAK dG8gY29yZSBwYXJ0cyBvZiBmaXJtd2FyZSBsb2FkaW5nIG1lY2hhbmlzbSksIGhlIHN1Z2dlc3Rl ZCB0aGF0IGEgcHJvcGVyIApjb21taXQgbG9nIHdpdGggdGhlIG5lY2Vzc2FyeSBpbmZvcm1hdGlv biBjb3VsZCBoYXZlIGhlbHBlZCBoaW1zZWxmIGFuZCB0aGUgCm90aGVyIG1haW50YWluZXJzIHdo byBtYXkgbm90IHlldCBoYWQgdGltZSB0byBkZWVwZW4gdGhpcyB0b3BpY3MuCgpUaGlzIHBhdGNo IHRvICJrZXhlYyIgc2xpcHBlZCBpbiB3aXRoIG5vIHN1Y2ggYWRkaXRpb25zLgoKVGhlcmVmb3Jl LCBJIGFncmVlIHdpdGggeW91IGluIGZ1bGw6IEknbGwgYWRkIHRoZXNlIGluZm9ybWF0aW9uIGFu ZCBzZW5kIGEgCm5ldyB2ZXJzaW9uIEFTQVAuCgo+IFRoYW5rcyBhZ2FpbiBmb3IgdGhlIGVmZm9y dC4KClRoYW5rcyBzbyBtdWNoIGZvciB0aGUgIkFja2VkLWJ5OiIgdGFnIGZyb20geW91LgoKRmFi aW8gIAoKW3NuaXBdCgoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fCmtleGVjIG1haWxpbmcgbGlzdAprZXhlY0BsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6 Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8va2V4ZWMK