From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dongwon Kim Subject: [RFC PATCH 32/60] hyper_dmabuf: make all shared pages read-only Date: Tue, 19 Dec 2017 11:29:48 -0800 Message-ID: <1513711816-2618-32-git-send-email-dongwon.kim@intel.com> References: <1513711816-2618-1-git-send-email-dongwon.kim@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1513711816-2618-1-git-send-email-dongwon.kim@intel.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: linux-kernel@vger.kernel.org Cc: xen-devel@lists.xenproject.org, mateuszx.potrola@intel.com, dri-devel@lists.freedesktop.org, dongwon.kim@intel.com List-Id: dri-devel@lists.freedesktop.org QWxsIHNoYXJlZCBwYWdlcyBuZWVkIHRvIGJlIHJlYWQtb25seSBmcm9tIGltcG9ydGVyJ3MKcG9p bnQgb2YgdmlldyB0byBwcmV2ZW50IHRoZSBidWZmZXIgZnJvbSBiZWluZyBjb3JydXB0ZWQuCgpU aGlzIHBhdGNoIG1heSBuZWVkIHRvIGJlIHJldmVydGVkIGlmIHdlIGZpbmQgYSBiZXR0ZXIKd2F5 IHRvIHByb3RlY3QgdGhlIG9yaWdpbmFsIGNvbnRlbnQgaW4gdGhpcyBzaGFyaW5nCm1vZGVsLgoK U2lnbmVkLW9mZi1ieTogRG9uZ3dvbiBLaW0gPGRvbmd3b24ua2ltQGludGVsLmNvbT4KLS0tCiBk cml2ZXJzL3hlbi9oeXBlcl9kbWFidWYveGVuL2h5cGVyX2RtYWJ1Zl94ZW5fc2htLmMgfCAxNiAr KysrKysrKy0tLS0tLS0tCiAxIGZpbGUgY2hhbmdlZCwgOCBpbnNlcnRpb25zKCspLCA4IGRlbGV0 aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMveGVuL2h5cGVyX2RtYWJ1Zi94ZW4vaHlwZXJf ZG1hYnVmX3hlbl9zaG0uYyBiL2RyaXZlcnMveGVuL2h5cGVyX2RtYWJ1Zi94ZW4vaHlwZXJfZG1h YnVmX3hlbl9zaG0uYwppbmRleCBjNmEyOTkzLi4xNDE2YTY5IDEwMDY0NAotLS0gYS9kcml2ZXJz L3hlbi9oeXBlcl9kbWFidWYveGVuL2h5cGVyX2RtYWJ1Zl94ZW5fc2htLmMKKysrIGIvZHJpdmVy cy94ZW4vaHlwZXJfZG1hYnVmL3hlbi9oeXBlcl9kbWFidWZfeGVuX3NobS5jCkBAIC0xMDQsMjQg KzEwNCwyNCBAQCBpbnQgaHlwZXJfZG1hYnVmX3hlbl9zaGFyZV9wYWdlcyhzdHJ1Y3QgcGFnZSAq KnBhZ2VzLCBpbnQgZG9taWQsIGludCBuZW50cywKIAogCSpyZWZzX2luZm8gPSAodm9pZCAqKXNo X3BhZ2VzX2luZm87CiAKLQkvKiBzaGFyZSBkYXRhIHBhZ2VzIGluIHJ3IG1vZGUqLworCS8qIHNo YXJlIGRhdGEgcGFnZXMgaW4gcmVhZG9ubHkgbW9kZSBmb3Igc2VjdXJpdHkgKi8KIAlmb3IgKGk9 MDsgaTxuZW50czsgaSsrKSB7CiAJCWx2bDJfdGFibGVbaV0gPSBnbnR0YWJfZ3JhbnRfZm9yZWln bl9hY2Nlc3MoZG9taWQsCiAJCQkJCQkJICAgIHBmbl90b19tZm4ocGFnZV90b19wZm4ocGFnZXNb aV0pKSwKLQkJCQkJCQkgICAgMCk7CisJCQkJCQkJICAgIHRydWUgLyogcmVhZC1vbmx5IGZyb20g cmVtb3RlIGRvbWFpbiAqLyk7CiAJfQogCiAJLyogU2hhcmUgMm5kIGxldmVsIGFkZHJlc3Npbmcg cGFnZXMgaW4gcmVhZG9ubHkgbW9kZSovCiAJZm9yIChpPTA7IGk8IG5fbHZsMl9ncmVmczsgaSsr KSB7CiAJCWx2bDNfdGFibGVbaV0gPSBnbnR0YWJfZ3JhbnRfZm9yZWlnbl9hY2Nlc3MoZG9taWQs CiAJCQkJCQkJICAgIHZpcnRfdG9fbWZuKCh1bnNpZ25lZCBsb25nKWx2bDJfdGFibGUraSpQQUdF X1NJWkUgKSwKLQkJCQkJCQkgICAgMSk7CisJCQkJCQkJICAgIHRydWUpOwogCX0KIAogCS8qIFNo YXJlIGx2bDNfdGFibGUgaW4gcmVhZG9ubHkgbW9kZSovCiAJbHZsM19ncmVmID0gZ250dGFiX2dy YW50X2ZvcmVpZ25fYWNjZXNzKGRvbWlkLAogCQkJCQkJdmlydF90b19tZm4oKHVuc2lnbmVkIGxv bmcpbHZsM190YWJsZSksCi0JCQkJCQkxKTsKKwkJCQkJCXRydWUpOwogCiAKIAkvKiBTdG9yZSBs dmwzX3RhYmxlIHBhZ2UgdG8gYmUgZnJlZWQgbGF0ZXIgKi8KQEAgLTMxNywxMiArMzE3LDEyIEBA IHN0cnVjdCBwYWdlICoqIGh5cGVyX2RtYWJ1Zl94ZW5fbWFwX3NoYXJlZF9wYWdlcyhpbnQgbHZs M19ncmVmLCBpbnQgZG9taWQsIGludCBuCiAJCWZvciAoaiA9IDA7IGogPCBSRUZTX1BFUl9QQUdF OyBqKyspIHsKIAkJCWdudHRhYl9zZXRfbWFwX29wKCZkYXRhX21hcF9vcHNba10sCiAJCQkJCSAg KHVuc2lnbmVkIGxvbmcpcGZuX3RvX2thZGRyKHBhZ2VfdG9fcGZuKGRhdGFfcGFnZXNba10pKSwK LQkJCQkJICBHTlRNQVBfaG9zdF9tYXAsCisJCQkJCSAgR05UTUFQX2hvc3RfbWFwIHwgR05UTUFQ X3JlYWRvbmx5LAogCQkJCQkgIGx2bDJfdGFibGVbal0sIGRvbWlkKTsKIAogCQkJZ250dGFiX3Nl dF91bm1hcF9vcCgmZGF0YV91bm1hcF9vcHNba10sCiAJCQkJCSAgICAodW5zaWduZWQgbG9uZylw Zm5fdG9fa2FkZHIocGFnZV90b19wZm4oZGF0YV9wYWdlc1trXSkpLAotCQkJCQkgICAgR05UTUFQ X2hvc3RfbWFwLCAtMSk7CisJCQkJCSAgICBHTlRNQVBfaG9zdF9tYXAgfCBHTlRNQVBfcmVhZG9u bHksIC0xKTsKIAkJCWsrKzsKIAkJfQogCX0KQEAgLTMzMywxMiArMzMzLDEyIEBAIHN0cnVjdCBw YWdlICoqIGh5cGVyX2RtYWJ1Zl94ZW5fbWFwX3NoYXJlZF9wYWdlcyhpbnQgbHZsM19ncmVmLCBp bnQgZG9taWQsIGludCBuCiAJZm9yIChqID0gMDsgaiA8IG5lbnRzX2xhc3Q7IGorKykgewogCQln bnR0YWJfc2V0X21hcF9vcCgmZGF0YV9tYXBfb3BzW2tdLAogCQkJCSAgKHVuc2lnbmVkIGxvbmcp cGZuX3RvX2thZGRyKHBhZ2VfdG9fcGZuKGRhdGFfcGFnZXNba10pKSwKLQkJCQkgIEdOVE1BUF9o b3N0X21hcCwKKwkJCQkgIEdOVE1BUF9ob3N0X21hcCB8IEdOVE1BUF9yZWFkb25seSwKIAkJCQkg IGx2bDJfdGFibGVbal0sIGRvbWlkKTsKIAogCQlnbnR0YWJfc2V0X3VubWFwX29wKCZkYXRhX3Vu bWFwX29wc1trXSwKIAkJCQkgICAgKHVuc2lnbmVkIGxvbmcpcGZuX3RvX2thZGRyKHBhZ2VfdG9f cGZuKGRhdGFfcGFnZXNba10pKSwKLQkJCQkgICAgR05UTUFQX2hvc3RfbWFwLCAtMSk7CisJCQkJ ICAgIEdOVE1BUF9ob3N0X21hcCB8IEdOVE1BUF9yZWFkb25seSwgLTEpOwogCQlrKys7CiAJfQog Ci0tIAoyLjcuNAoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3Jn Cmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=