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Peter Anvin" , Ingo Molnar , James Bottomley , "Kirill A. Shutemov" , Matthew Wilcox , Matthew Garrett , Mark Rutland , Michal Hocko , Mike Rapoport , Mike Rapoport , Michael Kerrisk , Palmer Dabbelt , Paul Walmsley , Peter Zijlstra , "Rafael J. Wysocki" , Rick Edgecombe , Roman Gushchin , Shakeel Butt , Shuah Khan , Thomas Gleixner , Tycho Andersen , Will Deacon , Yury Norov , linux-api@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-nvdimm@lists.01.org, linux-riscv@lists.infradead.org, x86@kernel.org, kernel test robot Subject: [PATCH v2 1/2] secretmem: optimize page_is_secretmem() Date: Tue, 20 Apr 2021 16:16:09 +0300 Message-Id: <20210420131611.8259-3-rppt@kernel.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210420131611.8259-1-rppt@kernel.org> References: <20210420131611.8259-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210420_061651_884772_D55D59DF X-CRM114-Status: GOOD ( 17.55 ) 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 RnJvbTogTWlrZSBSYXBvcG9ydCA8cnBwdEBsaW51eC5pYm0uY29tPgoKS2VybmVsIHRlc3Qgcm9i b3QgcmVwb3J0ZWQgLTQuMiUgcmVncmVzc2lvbiBvZiB3aWxsLWl0LXNjYWxlLnBlcl90aHJlYWRf b3BzCmR1ZSB0byBjb21taXQgIm1tOiBpbnRyb2R1Y2UgbWVtZmRfc2VjcmV0IHN5c3RlbSBjYWxs IHRvIGNyZWF0ZSAic2VjcmV0IgptZW1vcnkgYXJlYXMiLgoKVGhlIHBlcmYgcHJvZmlsZSBvZiB0 aGUgdGVzdCBpbmRpY2F0ZWQgdGhhdCB0aGUgcmVncmVzc2lvbiBpcyBjYXVzZWQgYnkKcGFnZV9p c19zZWNyZXRtZW0oKSBjYWxsZWQgZnJvbSBndXBfcHRlX3JhbmdlKCkgKGlubGluZWQgYnkgZ3Vw X3BnZF9yYW5nZSk6CgogMjcuNzYgICsyLjUgIDMwLjIzICAgICAgIHBlcmYtcHJvZmlsZS5jaGls ZHJlbi5jeWNsZXMtcHAuZ3VwX3BnZF9yYW5nZQogIDAuMDAgICszLjIgICAzLjE5IMKxIDIlICBw ZXJmLXByb2ZpbGUuY2hpbGRyZW4uY3ljbGVzLXBwLnBhZ2VfbWFwcGluZwogIDAuMDAgICszLjcg ICAzLjY2IMKxIDIlICBwZXJmLXByb2ZpbGUuY2hpbGRyZW4uY3ljbGVzLXBwLnBhZ2VfaXNfc2Vj cmV0bWVtCgpGdXJ0aGVyIGFuYWx5c2lzIHNob3dlZCB0aGF0IHRoZSBzbG93IGRvd24gaGFwcGVu cyBiZWNhdXNlIG5laXRoZXIKcGFnZV9pc19zZWNyZXRtZW0oKSBub3IgcGFnZV9tYXBwaW5nKCkg YXJlIG5vdCBpbmxpbmUgYW5kIG1vcmVvdmVyLAptdWx0aXBsZSBwYWdlIGZsYWdzIGNoZWNrcyBp biBwYWdlX21hcHBpbmcoKSBpbnZvbHZlIGNhbGxpbmcKY29tcG91bmRfaGVhZCgpIHNldmVyYWwg dGltZXMgZm9yIHRoZSBzYW1lIHBhZ2UuCgpNYWtlIHBhZ2VfaXNfc2VjcmV0bWVtKCkgaW5saW5l IGFuZCByZXBsYWNlIHBhZ2VfbWFwcGluZygpIHdpdGggcGFnZSBmbGFnCmNoZWNrcyB0aGF0IGRv IG5vdCBpbXBseSBwYWdlLXRvLWhlYWQgY29udmVyc2lvbi4KClJlcG9ydGVkLWJ5OiBrZXJuZWwg dGVzdCByb2JvdCA8b2xpdmVyLnNhbmdAaW50ZWwuY29tPgpTaWduZWQtb2ZmLWJ5OiBNaWtlIFJh cG9wb3J0IDxycHB0QGxpbnV4LmlibS5jb20+Ci0tLQogaW5jbHVkZS9saW51eC9zZWNyZXRtZW0u aCB8IDI2ICsrKysrKysrKysrKysrKysrKysrKysrKystCiBtbS9zZWNyZXRtZW0uYyAgICAgICAg ICAgIHwgMTIgKy0tLS0tLS0tLS0tCiAyIGZpbGVzIGNoYW5nZWQsIDI2IGluc2VydGlvbnMoKyks IDEyIGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2luY2x1ZGUvbGludXgvc2VjcmV0bWVtLmgg Yi9pbmNsdWRlL2xpbnV4L3NlY3JldG1lbS5oCmluZGV4IDkwN2E2NzM0MDU5Yy4uYjg0MmIzOGNi ZWIxIDEwMDY0NAotLS0gYS9pbmNsdWRlL2xpbnV4L3NlY3JldG1lbS5oCisrKyBiL2luY2x1ZGUv bGludXgvc2VjcmV0bWVtLmgKQEAgLTQsOCArNCwzMiBAQAogCiAjaWZkZWYgQ09ORklHX1NFQ1JF VE1FTQogCitleHRlcm4gY29uc3Qgc3RydWN0IGFkZHJlc3Nfc3BhY2Vfb3BlcmF0aW9ucyBzZWNy ZXRtZW1fYW9wczsKKworc3RhdGljIGlubGluZSBib29sIHBhZ2VfaXNfc2VjcmV0bWVtKHN0cnVj dCBwYWdlICpwYWdlKQoreworCXN0cnVjdCBhZGRyZXNzX3NwYWNlICptYXBwaW5nOworCisJLyoK KwkgKiBVc2luZyBwYWdlX21hcHBpbmcoKSBpcyBxdWl0ZSBzbG93IGJlY2F1c2Ugb2YgdGhlIGFj dHVhbCBjYWxsCisJICogaW5zdHJ1Y3Rpb24gYW5kIHJlcGVhdGVkIGNvbXBvdW5kX2hlYWQocGFn ZSkgaW5zaWRlIHRoZQorCSAqIHBhZ2VfbWFwcGluZygpIGZ1bmN0aW9uLgorCSAqIFdlIGtub3cg dGhhdCBzZWNyZXRtZW0gcGFnZXMgYXJlIG5vdCBjb21wb3VuZCBhbmQgTFJVIHNvIHdlIGNhbgor CSAqIHNhdmUgYSBjb3VwbGUgb2YgY3ljbGVzIGhlcmUuCisJICovCisJaWYgKFBhZ2VDb21wb3Vu ZChwYWdlKSB8fCAhUGFnZUxSVShwYWdlKSkKKwkJcmV0dXJuIGZhbHNlOworCisJbWFwcGluZyA9 IChzdHJ1Y3QgYWRkcmVzc19zcGFjZSAqKQorCQkoKHVuc2lnbmVkIGxvbmcpcGFnZS0+bWFwcGlu ZyAmIH5QQUdFX01BUFBJTkdfRkxBR1MpOworCisJaWYgKG1hcHBpbmcgIT0gcGFnZS0+bWFwcGlu ZykKKwkJcmV0dXJuIGZhbHNlOworCisJcmV0dXJuIHBhZ2UtPm1hcHBpbmctPmFfb3BzID09ICZz ZWNyZXRtZW1fYW9wczsKK30KKwogYm9vbCB2bWFfaXNfc2VjcmV0bWVtKHN0cnVjdCB2bV9hcmVh X3N0cnVjdCAqdm1hKTsKLWJvb2wgcGFnZV9pc19zZWNyZXRtZW0oc3RydWN0IHBhZ2UgKnBhZ2Up OwogYm9vbCBzZWNyZXRtZW1fYWN0aXZlKHZvaWQpOwogCiAjZWxzZQpkaWZmIC0tZ2l0IGEvbW0v c2VjcmV0bWVtLmMgYi9tbS9zZWNyZXRtZW0uYwppbmRleCAzYjFiYTM5OTE5NjQuLjBiY2QxNWUx YjU0OSAxMDA2NDQKLS0tIGEvbW0vc2VjcmV0bWVtLmMKKysrIGIvbW0vc2VjcmV0bWVtLmMKQEAg LTE1MSwyMiArMTUxLDEyIEBAIHN0YXRpYyB2b2lkIHNlY3JldG1lbV9mcmVlcGFnZShzdHJ1Y3Qg cGFnZSAqcGFnZSkKIAljbGVhcl9oaWdocGFnZShwYWdlKTsKIH0KIAotc3RhdGljIGNvbnN0IHN0 cnVjdCBhZGRyZXNzX3NwYWNlX29wZXJhdGlvbnMgc2VjcmV0bWVtX2FvcHMgPSB7Citjb25zdCBz dHJ1Y3QgYWRkcmVzc19zcGFjZV9vcGVyYXRpb25zIHNlY3JldG1lbV9hb3BzID0gewogCS5mcmVl cGFnZQk9IHNlY3JldG1lbV9mcmVlcGFnZSwKIAkubWlncmF0ZXBhZ2UJPSBzZWNyZXRtZW1fbWln cmF0ZXBhZ2UsCiAJLmlzb2xhdGVfcGFnZQk9IHNlY3JldG1lbV9pc29sYXRlX3BhZ2UsCiB9Owog Ci1ib29sIHBhZ2VfaXNfc2VjcmV0bWVtKHN0cnVjdCBwYWdlICpwYWdlKQotewotCXN0cnVjdCBh ZGRyZXNzX3NwYWNlICptYXBwaW5nID0gcGFnZV9tYXBwaW5nKHBhZ2UpOwotCi0JaWYgKCFtYXBw aW5nKQotCQlyZXR1cm4gZmFsc2U7Ci0KLQlyZXR1cm4gbWFwcGluZy0+YV9vcHMgPT0gJnNlY3Jl dG1lbV9hb3BzOwotfQotCiBzdGF0aWMgc3RydWN0IHZmc21vdW50ICpzZWNyZXRtZW1fbW50Owog CiBzdGF0aWMgc3RydWN0IGZpbGUgKnNlY3JldG1lbV9maWxlX2NyZWF0ZSh1bnNpZ25lZCBsb25n IGZsYWdzKQotLSAKMi4yOC4wCgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KbGludXgtcmlzY3YgbWFpbGluZyBsaXN0CmxpbnV4LXJpc2N2QGxpc3RzLmlu ZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9s aW51eC1yaXNjdgo=