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Peter Anvin" References: <20220503132207.17234-1-jgross@suse.com> <20220503132207.17234-2-jgross@suse.com> From: Juergen Gross Subject: Re: [PATCH 1/2] x86/pat: fix x86_has_pat_wp() In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------d8k0hMH5UzQW082oVB8YUPtP" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------d8k0hMH5UzQW082oVB8YUPtP Content-Type: multipart/mixed; boundary="------------BSsqO8n9CO6URm6ibKlIXMtW"; protected-headers="v1" From: Juergen Gross To: Borislav Petkov Cc: xen-devel@lists.xenproject.org, x86@kernel.org, linux-kernel@vger.kernel.org, jbeulich@suse.com, Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" Message-ID: <1cfde4bf-241f-d94c-ffd7-2a11cf9aa1f2@suse.com> Subject: Re: [PATCH 1/2] x86/pat: fix x86_has_pat_wp() References: <20220503132207.17234-1-jgross@suse.com> <20220503132207.17234-2-jgross@suse.com> In-Reply-To: --------------BSsqO8n9CO6URm6ibKlIXMtW Content-Type: multipart/mixed; boundary="------------00h0XzlSR6lx9AL9hG09U3QX" --------------00h0XzlSR6lx9AL9hG09U3QX Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 T24gMjAuMDYuMjIgMTI6MjYsIEJvcmlzbGF2IFBldGtvdiB3cm90ZToNCj4gT24gVHVlLCBN YXkgMDMsIDIwMjIgYXQgMDM6MjI6MDZQTSArMDIwMCwgSnVlcmdlbiBHcm9zcyB3cm90ZToN Cj4+IHg4Nl9oYXNfcGF0X3dwKCkgaXMgdXNpbmcgYSB3cm9uZyB0ZXN0LCBhcyBpdCByZWxp ZXMgb24gdGhlIG5vcm1hbA0KPj4gUEFUIGNvbmZpZ3VyYXRpb24gdXNlZCBieSB0aGUga2Vy bmVsLiBJbiBjYXNlIHRoZSBQQVQgTVNSIGhhcyBiZWVuDQo+PiBzZXR1cCBieSBhbm90aGVy IGVudGl0eSAoZS5nLiBCSU9TIG9yIFhlbiBoeXBlcnZpc29yKSBpdCBtaWdodCByZXR1cm4N Cj4+IGZhbHNlIGV2ZW4gaWYgdGhlIFBBVCBjb25maWd1cmF0aW9uIGlzIGFsbG93aW5nIFdQ IG1hcHBpbmdzLg0KPj4NCj4+IEZpeGVzOiAxZjZmNjU1ZTAxYWQgKCJ4ODYvbW06IEFkZCBh IHg4Nl9oYXNfcGF0X3dwKCkgaGVscGVyIikNCj4+IFNpZ25lZC1vZmYtYnk6IEp1ZXJnZW4g R3Jvc3MgPGpncm9zc0BzdXNlLmNvbT4NCj4+IC0tLQ0KPj4gICBhcmNoL3g4Ni9tbS9pbml0 LmMgfCAzICsrLQ0KPj4gICAxIGZpbGUgY2hhbmdlZCwgMiBpbnNlcnRpb25zKCspLCAxIGRl bGV0aW9uKC0pDQo+Pg0KPj4gZGlmZiAtLWdpdCBhL2FyY2gveDg2L21tL2luaXQuYyBiL2Fy Y2gveDg2L21tL2luaXQuYw0KPj4gaW5kZXggZDhjZmNlMjIxMjc1Li43MWUxODJlYmNlZDMg MTAwNjQ0DQo+PiAtLS0gYS9hcmNoL3g4Ni9tbS9pbml0LmMNCj4+ICsrKyBiL2FyY2gveDg2 L21tL2luaXQuYw0KPj4gQEAgLTgwLDcgKzgwLDggQEAgc3RhdGljIHVpbnQ4X3QgX19wdGUy Y2FjaGVtb2RlX3RibFs4XSA9IHsNCj4+ICAgLyogQ2hlY2sgdGhhdCB0aGUgd3JpdGUtcHJv dGVjdCBQQVQgZW50cnkgaXMgc2V0IGZvciB3cml0ZS1wcm90ZWN0ICovDQo+PiAgIGJvb2wg eDg2X2hhc19wYXRfd3Aodm9pZCkNCj4+ICAgew0KPj4gLQlyZXR1cm4gX19wdGUyY2FjaGVt b2RlX3RibFtfUEFHRV9DQUNIRV9NT0RFX1dQXSA9PSBfUEFHRV9DQUNIRV9NT0RFX1dQOw0K Pj4gKwlyZXR1cm4gX19wdGUyY2FjaGVtb2RlX3RibFtfX2NhY2hlbW9kZTJwdGVfdGJsW19Q QUdFX0NBQ0hFX01PREVfV1BdXSA9PQ0KPj4gKwkgICAgICAgX1BBR0VfQ0FDSEVfTU9ERV9X UDsNCj4gDQo+IFNvIHRoaXMgY29kZSBhbHdheXMgbWFrZXMgbXkgaGVhZCBzcGluLi4uIGVz cGVjaWFsbHkgYWZ0ZXIgdmFjYXRpb24gYnV0DQo+IGxlbW1lIHRha2UgYSBzdGFiOg0KPiAN Cj4gX19wdGUyY2FjaGVtb2RlX3RibCBpbmRpY2VzIGFyZSBvZiB0eXBlIGVudW0gcGFnZV9j YWNoZV9tb2RlLg0KDQpZZXMuDQoNCj4gV2hhdCB5b3UndmUgZG9uZSBpcyBpbmRleCB3aXRo DQo+IA0KPiBfX2NhY2hlbW9kZTJwdGVfdGJsW19QQUdFX0NBQ0hFX01PREVfV1BdDQo+IA0K PiB3aGljaCBnaXZlcyB1aW50MTZfdC4NCj4gDQo+IFNvLCBpZiBhdCBhbGwsIHRoaXMgc2hv dWxkIGRvIF9fcHRlMmNtX2lkeChfUEFHRV9DQUNIRV9NT0RFX1dQKSB0byBpbmRleA0KPiBp bnRvIGl0Lg0KDQpPaCwgeW91IGFyZSBwYXJ0aWFsbHkgcmlnaHQuDQoNCkl0IHNob3VsZCBi ZSBfX3B0ZTJjbV9pZHgoX19jYWNoZW1vZGUycHRlX3RibFtfUEFHRV9DQUNIRV9NT0RFX1dQ XSkuDQoNCj4gQnV0IEknbSBzdGlsbCB1bmNsZWFyIG9uIHRoZSBiaWcgcGljdHVyZS4gTG9v a2luZyBhdCBKYW4ncyBleHBsYW5hdGlvbiwNCj4gdGhlcmUncyBzb21ldGhpbmcgYWJvdXQg UEFUIGluaXQgYmVpbmcgc2tpcHBlZCBkdWUgdG8gTVRSUnMgbm90IGJlaW5nDQo+IGVtdWxh dGVkIGJ5IFhlbi4uLi4gb3Igc29tZXRoaW5nIHRvIHRoYXQgZWZmZWN0Lg0KDQpQQVQgaW5p dCBpcyBiZWluZyBza2lwcGVkIGZvciBYZW4gUFYgZ3Vlc3RzLCBhcyB0aG9zZSBjYW4ndCB3 cml0ZSB0aGUNClBBVCBNU1IuIFRoZXkgbmVlZCB0byBjb3BlIHdpdGggdGhlIHNldHRpbmcg dGhlIGh5cGVydmlzb3IgaGFzIGRvbmUNCih3aGljaCBjb250YWlucyBhbGwgY2FjaGluZyBt b2RlcywgYnV0IGluIGEgZGlmZmVyZW50IGxheW91dCB0aGFuIHRoZQ0Ka2VybmVsIGlzIHVz aW5nIG5vcm1hbGx5KS4NCg0KPiBTbyBpZiB0aGF0J3MgdGhlIGNhc2UsIHRoZSBYZW4gZ3Vl c3QgY29kZSBzaG91bGQgaW5pdCBQQVQgaW4gaXRzIG93bg0KPiB3YXksIHNvIHRoYXQgdGhl IGdlbmVyaWMgY29kZSB3b3JrcyB3aXRoIHRoaXMgd2l0aG91dCBkb2luZyBoYWNrcy4NCg0K RGVwZW5kcyBvbiB3aGF0IHlvdSBtZWFuIHdpdGggImluaXQgUEFUIi4gSWYgeW91IG1lYW4g dG8gd3JpdGUgdGhlDQpQQVQgTVNSLCB0aGVuIG5vLCB0aGlzIHdvbid0IHdvcmsuIElmIHlv dSBtZWFuIHRvIHNldHVwIHRoZSB0cmFuc2xhdGlvbg0KYXJyYXlzIF9fY2FjaGVtb2RlMnB0 ZV90YmxbXSBhbmQgX19wdGUyY2FjaGVtb2RlX3RibFtdLCB0aGVuIHllcywgdGhpcw0KaXMg YWxyZWFkeSBkb25lLg0KDQpNeSBwYXRjaCBpcyBvbmx5IGZpeGluZyB0aGUgd3Jvbmcgd2F5 IHF1ZXJ5aW5nIGZvciBXUCBiZWluZyBzdXBwb3J0ZWQuDQoNCj4gQnV0IEknbSBvbmx5IGd1 ZXNzaW5nIC0gdGhpcyBuZWVkcyBhICpsb3QqIG1vcmUgZWxhYm9yYXRpb24gYW5kDQo+IGV4 cGxhbmF0aW9uIHdoeSBleGFjdGx5IHRoaXMgaXMgbmVlZGVkLg0KDQpJIHdpbGwgY29ycmVj dCB0aGUgY29kZSBhbmQgdXBkYXRlIHRoZSBjb21taXQgbWVzc2FnZS4NCg0KDQpKdWVyZ2Vu DQo= --------------00h0XzlSR6lx9AL9hG09U3QX Content-Type: application/pgp-keys; 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