From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Dunlap Subject: Re: [PATCH v4] x86/mm: Add mem access rights to NPT Date: Tue, 24 Jul 2018 12:26:22 +0100 Message-ID: <31981fe5-90b4-9490-08d9-f58afc28b6b1@citrix.com> References: <1532353689-2242-1-git-send-email-aisaila@bitdefender.com> <5B56E99D02000078001D706B@prv1-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <5B56E99D02000078001D706B@prv1-mh.provo.novell.com> Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Jan Beulich , aisaila@bitdefender.com Cc: George Dunlap , Andrew Cooper , tamas@tklengyel.com, Razvan Cojocaru , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org T24gMDcvMjQvMjAxOCAwOTo1NSBBTSwgSmFuIEJldWxpY2ggd3JvdGU6Cj4+Pj4gT24gMjMuMDcu MTggYXQgMTU6NDgsIDxhaXNhaWxhQGJpdGRlZmVuZGVyLmNvbT4gd3JvdGU6Cj4+IC0tLSBhL3hl bi9hcmNoL3g4Ni9tbS9tZW1fYWNjZXNzLmMKPj4gKysrIGIveGVuL2FyY2gveDg2L21tL21lbV9h Y2Nlc3MuYwo+PiBAQCAtMjIxLDEyICsyMjEsMTIgQEAgYm9vbCBwMm1fbWVtX2FjY2Vzc19jaGVj ayhwYWRkcl90IGdwYSwgdW5zaWduZWQgbG9uZyBnbGEsCj4+ICAgICAgICAgIHsKPj4gICAgICAg ICAgICAgIHJlcS0+dS5tZW1fYWNjZXNzLmZsYWdzIHw9IE1FTV9BQ0NFU1NfR0xBX1ZBTElEOwo+ PiAgICAgICAgICAgICAgcmVxLT51Lm1lbV9hY2Nlc3MuZ2xhID0gZ2xhOwo+PiAtCj4+IC0gICAg ICAgICAgICBpZiAoIG5wZmVjLmtpbmQgPT0gbnBmZWNfa2luZF93aXRoX2dsYSApCj4+IC0gICAg ICAgICAgICAgICAgcmVxLT51Lm1lbV9hY2Nlc3MuZmxhZ3MgfD0gTUVNX0FDQ0VTU19GQVVMVF9X SVRIX0dMQTsKPj4gLSAgICAgICAgICAgIGVsc2UgaWYgKCBucGZlYy5raW5kID09IG5wZmVjX2tp bmRfaW5fZ3B0ICkKPj4gLSAgICAgICAgICAgICAgICByZXEtPnUubWVtX2FjY2Vzcy5mbGFncyB8 PSBNRU1fQUNDRVNTX0ZBVUxUX0lOX0dQVDsKPj4gICAgICAgICAgfQo+PiArCj4+ICsgICAgICAg IGlmICggbnBmZWMua2luZCA9PSBucGZlY19raW5kX3dpdGhfZ2xhICkKPj4gKyAgICAgICAgICAg IHJlcS0+dS5tZW1fYWNjZXNzLmZsYWdzIHw9IE1FTV9BQ0NFU1NfRkFVTFRfV0lUSF9HTEE7Cj4+ ICsgICAgICAgIGVsc2UgaWYgKCBucGZlYy5raW5kID09IG5wZmVjX2tpbmRfaW5fZ3B0ICkKPj4g KyAgICAgICAgICAgIHJlcS0+dS5tZW1fYWNjZXNzLmZsYWdzIHw9IE1FTV9BQ0NFU1NfRkFVTFRf SU5fR1BUOwo+IAo+IFdpdGhvdXQgZXhwbGFuYXRpb24gaW4gdGhlIGNvbW1pdCBtZXNzYWdlIGFu ZCB3aXRob3V0IGNvbW1lbnQKPiB0aGlzIGNoYW5nZSBpcyBhIG5vLWdvIGltbzogSSBjb25zaWRl ciBpdCBhdCBsZWFzdCBxdWVzdGlvbmFibGUgdG8KPiBoYXZlIG5wZmVjX2tpbmRfd2l0aF9nbGEg d2l0aG91dCAuZ2xhX3ZhbGlkIHNldCB0byB0cnVlLiBQZXJoYXBzCj4gaXQncyBqdXN0IGEgbmFt aW5nIGlzc3VlLCBidXQgdGhhdCB3b3VsZCB0aGVuIHN0aWxsIHJlcXVpcmUgaGFsZiBhCj4gc2Vu dGVuY2UgdG8gZXhwbGFpbi4KClRoZSBuYW1pbmcgaGVyZSBpcyBjb25mdXNpbmcsIGJ1dCBpdCBz ZWVtcyB0byBiZSBiYXNlZCBvbiB0aGUgQU1EIG1hbnVhbApuYW1pbmcgY29udmVudGlvbiAoSUlS QyBmcm9tIG15IHNraW0gdGhyb3VnaCB0aGUgbWFudWFsIGxhc3Qgd2VlaykuCiJXaXRoIGdsYSIg aW4gdGhpcyBjb250ZXh0IG1lYW5zLCAiVGhlIG5lc3RlZCBmYXVsdCBoYXBwZW5kIHdoaWxlIHRy eWluZwp0byB0cmFuc2xhdGUgdGhlIGZpbmFsIGd1ZXN0IGxpbmVhciBhZGRyZXNzIG9mIHRoZSBh Y2Nlc3MiLCBhcyBvcHBvc2VkCnRvICJUaGUgbmVzdGVkIGZhdWx0IGhhcHBlbmQgd2hpbGUgdHJ5 aW5nIHRvIHRyYW5zbGF0ZSBvbmUgb2YgdGhlIHBhZ2UKdGFibGVzLCBiZWZvcmUgdGhlIGd1ZXN0 IGxpbmVhciBhZGRyZXNzIGZvciB0aGUgdmlydHVhbCBhZGRyZXNzIGNvdWxkIGJlCmNhbGN1bGF0 ZWQuIiAgSXQncyBhIHBlcmZlY3RseSB2YWxpZCBzZXR0aW5nIG9uIEFNRCBib3gsIGluIHNwaXRl IG9mIHRoZQpmYWN0IHRoYXQgQU1EIGRvZXNuJ3QgcmVwb3J0IHRoZSB2aXJ0IC0+IGdsYSB0cmFu c2xhdGlvbi4KCkknZCBiZSBpbiBmYXZvciBvZiByZW5hbWluZyB0aGUgdmFyaWFibGUsIGJ1dCB0 aGF0IHNob3VsZG4ndCBiZQpBbGV4YW5kcnUncyBqb2IuCgpXaGF0IGFib3V0IGFkZGluZyBhIGNv bW1lbnQgbGlrZSB0aGlzOgoKIk5hbWluZyBpcyBjb25mdXNpbmcgaGVyZTsgJ3dpdGhfZ2xhJyBz aW1wbHkgbWVhbnMgdGhlIGZhdWx0IGhhcHBlbmVkIGFzCnRoZSByZXN1bHQgb2YgYSB0cmFuc2xh dGluZyB0aGUgZmluYWwgZ2xhLCBhcyBvcHBvc2VkIHRvIHRyYW5zbGF0aW5nIG9uZQpvZiB0aGUg cGFnZXRhYmxlcy4iCgpbc25pcF0KPj4gKyAgICAgICAgewo+PiArICAgICAgICAgICAgeGZyZWUo ZC0+YXJjaC5tb25pdG9yLm1zcl9iaXRtYXApOwo+PiArICAgICAgICAgICAgcmV0dXJuIC1FTk9N RU07Cj4+ICsgICAgICAgIH0KPj4gKyAgICAgICAgcmFkaXhfdHJlZV9pbml0KHAybS0+bWVtX2Fj Y2Vzc19zZXR0aW5ncyk7Cj4+ICsgICAgfQo+IAo+IFdoYXQncyB0aGUgU1ZNIGNvbm5lY3Rpb24g aGVyZT8gUGxlYXNlIGRvbid0IGZvcmdldCB0aGF0IHAybS1wdC5jCj4gYWxzbyBzZXJ2ZXMgdGhl IHNoYWRvdyBjYXNlLiBQZXJoYXBzIHN0cnVjdCBwMm1fZG9tYWluIHNob3VsZAo+IGNvbnRhaW4g YSBib29sZWFuIGluZGljYXRvciB3aGV0aGVyIHRoaXMgYXV4aWxpYXJ5IGRhdGEgc3RydWN0dXJl IGlzCj4gbmVlZGVkPwoKSXQncyBiYXNpY2FsbHkganVzdCAiaGFwX2VuYWJsZWQoKSIgaXNuJ3Qg aXQ/CgogLUdlb3JnZQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVjdC5v cmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZl bA==