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[156.34.48.30]) by smtp.gmail.com with ESMTPSA id d14sm2013598qtr.62.2020.10.07.10.39.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Oct 2020 10:39:11 -0700 (PDT) Received: from jgg by mlx with local (Exim 4.94) (envelope-from ) id 1kQDPD-00112O-7o; Wed, 07 Oct 2020 14:39:11 -0300 Date: Wed, 7 Oct 2020 14:39:11 -0300 From: Jason Gunthorpe To: Daniel Vetter Subject: Re: [PATCH 13/13] vfio/type1: Mark follow_pfn as unsafe Message-ID: <20201007173911.GX5177@ziepe.ca> References: <20201007164426.1812530-1-daniel.vetter@ffwll.ch> <20201007164426.1812530-14-daniel.vetter@ffwll.ch> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201007164426.1812530-14-daniel.vetter@ffwll.ch> X-Mailman-Approved-At: Thu, 08 Oct 2020 07:20:54 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Jan Kara , Kees Cook , kvm@vger.kernel.org, John Hubbard , Cornelia Huck , LKML , DRI Development , linux-mm@kvack.org, =?utf-8?B?SsOpcsO0bWU=?= Glisse , Alex Williamson , Daniel Vetter , Dan Williams , Andrew Morton , linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" T24gV2VkLCBPY3QgMDcsIDIwMjAgYXQgMDY6NDQ6MjZQTSArMDIwMCwgRGFuaWVsIFZldHRlciB3 cm90ZToKPiBUaGUgY29kZSBzZWVtcyB0byBzdHVmZiB0aGVzZSBwZm5zIGludG8gaW9tbXUgcHRz IChvciBzb21ldGhpbmcgbGlrZQo+IHRoYXQsIEkgZGlkbid0IGZvbGxvdyksIGJ1dCB0aGVyZSdz IG5vIG1tdV9ub3RpZmllciB0byBlbnN1cmUgdGhhdAo+IGFjY2VzcyBpcyBzeW5jaHJvbml6ZWQg d2l0aCBwdGUgdXBkYXRlcy4KPiAKPiBIZW5jZSBtYXJrIHRoZXNlIGFzIHVuc2FmZS4gVGhpcyBt ZWFucyB0aGF0IHdpdGgKPiBDT05GSUdfU1RSSUNUX0ZPTExPV19QRk4sIHRoZXNlIHdpbGwgYmUg cmVqZWN0ZWQuCj4gCj4gUmVhbCBmaXggaXMgdG8gd2lyZSB1cCBhbiBtbXVfbm90aWZpZXIgLi4u IHNvbWVob3cuIFByb2JhYmx5IG1lYW5zIGFueQo+IGludmFsaWRhdGUgaXMgYSBmYXRhbCBmYXVs dCBmb3IgdGhpcyB2ZmlvIGRldmljZSwgYnV0IHRoZW4gdGhpcwo+IHNob3VsZG4ndCBldmVyIGhh cHBlbiBpZiB1c2Vyc3BhY2UgaXMgcmVhc29uYWJsZS4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBEYW5p ZWwgVmV0dGVyIDxkYW5pZWwudmV0dGVyQGludGVsLmNvbT4KPiBDYzogSmFzb24gR3VudGhvcnBl IDxqZ2dAemllcGUuY2E+Cj4gQ2M6IEtlZXMgQ29vayA8a2Vlc2Nvb2tAY2hyb21pdW0ub3JnPgo+ IENjOiBEYW4gV2lsbGlhbXMgPGRhbi5qLndpbGxpYW1zQGludGVsLmNvbT4KPiBDYzogQW5kcmV3 IE1vcnRvbiA8YWtwbUBsaW51eC1mb3VuZGF0aW9uLm9yZz4KPiBDYzogSm9obiBIdWJiYXJkIDxq aHViYmFyZEBudmlkaWEuY29tPgo+IENjOiBKw6lyw7RtZSBHbGlzc2UgPGpnbGlzc2VAcmVkaGF0 LmNvbT4KPiBDYzogSmFuIEthcmEgPGphY2tAc3VzZS5jej4KPiBDYzogRGFuIFdpbGxpYW1zIDxk YW4uai53aWxsaWFtc0BpbnRlbC5jb20+Cj4gQ2M6IGxpbnV4LW1tQGt2YWNrLm9yZwo+IENjOiBs aW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKPiBDYzogbGludXgtc2Ftc3VuZy1z b2NAdmdlci5rZXJuZWwub3JnCj4gQ2M6IGxpbnV4LW1lZGlhQHZnZXIua2VybmVsLm9yZwo+IENj OiBBbGV4IFdpbGxpYW1zb24gPGFsZXgud2lsbGlhbXNvbkByZWRoYXQuY29tPgo+IENjOiBDb3Ju ZWxpYSBIdWNrIDxjb2h1Y2tAcmVkaGF0LmNvbT4KPiBDYzoga3ZtQHZnZXIua2VybmVsLm9yZwo+ IC0tLQo+ICBkcml2ZXJzL3ZmaW8vdmZpb19pb21tdV90eXBlMS5jIHwgNCArKy0tCj4gIDEgZmls ZSBjaGFuZ2VkLCAyIGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pCj4gCj4gZGlmZiAtLWdp dCBhL2RyaXZlcnMvdmZpby92ZmlvX2lvbW11X3R5cGUxLmMgYi9kcml2ZXJzL3ZmaW8vdmZpb19p b21tdV90eXBlMS5jCj4gaW5kZXggNWZiZjBjMWY3NDMzLi5hNGQ1M2YzZDBhMzUgMTAwNjQ0Cj4g LS0tIGEvZHJpdmVycy92ZmlvL3ZmaW9faW9tbXVfdHlwZTEuYwo+ICsrKyBiL2RyaXZlcnMvdmZp by92ZmlvX2lvbW11X3R5cGUxLmMKPiBAQCAtNDIxLDcgKzQyMSw3IEBAIHN0YXRpYyBpbnQgZm9s bG93X2ZhdWx0X3BmbihzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKnZtYSwgc3RydWN0IG1tX3N0cnVj dCAqbW0sCj4gIHsKPiAgCWludCByZXQ7Cj4gIAo+IC0JcmV0ID0gZm9sbG93X3Bmbih2bWEsIHZh ZGRyLCBwZm4pOwo+ICsJcmV0ID0gdW5zYWZlX2ZvbGxvd19wZm4odm1hLCB2YWRkciwgcGZuKTsK PiAgCWlmIChyZXQpIHsKPiAgCQlib29sIHVubG9ja2VkID0gZmFsc2U7Cj4gIAo+IEBAIC00MzUs NyArNDM1LDcgQEAgc3RhdGljIGludCBmb2xsb3dfZmF1bHRfcGZuKHN0cnVjdCB2bV9hcmVhX3N0 cnVjdCAqdm1hLCBzdHJ1Y3QgbW1fc3RydWN0ICptbSwKPiAgCQlpZiAocmV0KQo+ICAJCQlyZXR1 cm4gcmV0Owo+ICAKPiAtCQlyZXQgPSBmb2xsb3dfcGZuKHZtYSwgdmFkZHIsIHBmbik7Cj4gKwkJ cmV0ID0gdW5zYWZlX2ZvbGxvd19wZm4odm1hLCB2YWRkciwgcGZuKTsKPiAgCX0KClRoaXMgaXMg YWN0dWFsbHkgYmVpbmcgY29tbW9ubHkgdXNlZCwgc28gaXQgbmVlZHMgZml4aW5nLgoKV2hlbiBJ IHRhbGtlZCB0byBBbGV4IGFib3V0IHRoaXMgbGFzdCB3ZSBoYWQgd29ya2VkIG91dCBhIHBhdGNo IHNlcmllcwp0aGF0IGFkZHMgYSB0ZXN0IG9uIHZtX29wcyB0aGF0IHRoZSB2bWEgY2FtZSBmcm9t IHZmaW8gaW4gdGhlIGZpcnN0CnBsYWNlLiBUaGUgVk1BJ3MgY3JlYXRlZCBieSBWRklPIGFyZSAn c2FmZScgYXMgdGhlIFBURXMgYXJlIG5ldmVyIGNoYW5nZWQuCgpKYXNvbgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0 CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK