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[156.34.48.30]) by smtp.gmail.com with ESMTPSA id r11sm1016060qtw.47.2020.10.21.05.50.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Oct 2020 05:50:31 -0700 (PDT) Received: from jgg by mlx with local (Exim 4.94) (envelope-from ) id 1kVDZW-003UAg-0q; Wed, 21 Oct 2020 09:50:30 -0300 Date: Wed, 21 Oct 2020 09:50:30 -0300 From: Jason Gunthorpe To: Daniel Vetter Subject: Re: [PATCH v3 12/16] PCI: Obey iomem restrictions for procfs mmap Message-ID: <20201021125030.GK36674@ziepe.ca> References: <20201021085655.1192025-1-daniel.vetter@ffwll.ch> <20201021085655.1192025-13-daniel.vetter@ffwll.ch> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201021085655.1192025-13-daniel.vetter@ffwll.ch> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201021_085035_354241_D485F900 X-CRM114-Status: GOOD ( 17.74 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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, Daniel Vetter , John Hubbard , LKML , DRI Development , linux-mm@kvack.org, =?utf-8?B?SsOpcsO0bWU=?= Glisse , linux-pci@vger.kernel.org, Bjorn Helgaas , 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 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gV2VkLCBPY3QgMjEsIDIwMjAgYXQgMTA6NTY6NTFBTSArMDIwMCwgRGFuaWVsIFZldHRlciB3 cm90ZToKPiBUaGVyZSdzIHRocmVlIHdheXMgdG8gYWNjZXNzIFBDSSBCQVJzIGZyb20gdXNlcnNw YWNlOiAvZGV2L21lbSwgc3lzZnMKPiBmaWxlcywgYW5kIHRoZSBvbGQgcHJvYyBpbnRlcmZhY2Uu IFR3byBjaGVjayBhZ2FpbnN0Cj4gaW9tZW1faXNfZXhjbHVzaXZlLCBwcm9jIG5ldmVyIGRpZC4g QW5kIHdpdGggQ09ORklHX0lPX1NUUklDVF9ERVZNRU0sCj4gdGhpcyBzdGFydHMgdG8gbWF0dGVy LCBzaW5jZSB3ZSBkb24ndCB3YW50IHJhbmRvbSB1c2Vyc3BhY2UgaGF2aW5nCj4gYWNjZXNzIHRv IFBDSSBCQVJzIHdoaWxlIGEgZHJpdmVyIGlzIGxvYWRlZCBhbmQgdXNpbmcgaXQuCj4gCj4gRml4 IHRoaXMgYnkgYWRkaW5nIHRoZSBzYW1lIGlvbWVtX2lzX2V4Y2x1c2l2ZSgpIGNoZWNrIHdlIGFs cmVhZHkgaGF2ZQo+IG9uIHRoZSBzeXNmcyBzaWRlIGluIHBjaV9tbWFwX3Jlc291cmNlKCkuCj4g Cj4gUmVmZXJlbmNlczogOTBhNTQ1ZTk4MTI2ICgicmVzdHJpY3QgL2Rldi9tZW0gdG8gaWRsZSBp byBtZW1vcnkgcmFuZ2VzIikKPiBTaWduZWQtb2ZmLWJ5OiBEYW5pZWwgVmV0dGVyIDxkYW5pZWwu dmV0dGVyQGludGVsLmNvbT4KPiBDYzogSmFzb24gR3VudGhvcnBlIDxqZ2dAemllcGUuY2E+Cj4g Q2M6IEtlZXMgQ29vayA8a2Vlc2Nvb2tAY2hyb21pdW0ub3JnPgo+IENjOiBEYW4gV2lsbGlhbXMg PGRhbi5qLndpbGxpYW1zQGludGVsLmNvbT4KPiBDYzogQW5kcmV3IE1vcnRvbiA8YWtwbUBsaW51 eC1mb3VuZGF0aW9uLm9yZz4KPiBDYzogSm9obiBIdWJiYXJkIDxqaHViYmFyZEBudmlkaWEuY29t Pgo+IENjOiBKw6lyw7RtZSBHbGlzc2UgPGpnbGlzc2VAcmVkaGF0LmNvbT4KPiBDYzogSmFuIEth cmEgPGphY2tAc3VzZS5jej4KPiBDYzogRGFuIFdpbGxpYW1zIDxkYW4uai53aWxsaWFtc0BpbnRl bC5jb20+Cj4gQ2M6IGxpbnV4LW1tQGt2YWNrLm9yZwo+IENjOiBsaW51eC1hcm0ta2VybmVsQGxp c3RzLmluZnJhZGVhZC5vcmcKPiBDYzogbGludXgtc2Ftc3VuZy1zb2NAdmdlci5rZXJuZWwub3Jn Cj4gQ2M6IGxpbnV4LW1lZGlhQHZnZXIua2VybmVsLm9yZwo+IENjOiBCam9ybiBIZWxnYWFzIDxi aGVsZ2Fhc0Bnb29nbGUuY29tPgo+IENjOiBsaW51eC1wY2lAdmdlci5rZXJuZWwub3JnCj4gU2ln bmVkLW9mZi1ieTogRGFuaWVsIFZldHRlciA8ZGFuaWVsLnZldHRlckBmZndsbC5jb20+CgpNYXli ZSBub3QgZm9yIGZpeGluZyBpbiB0aGlzIHNlcmllcywgYnV0IHRoaXMgYWNjZXNzIHRvCklPUkVT T1VSQ0VfQlVTWSBkb2Vzbid0IGhhdmUgYW55IGxvY2tpbmcuCgpUaGUgd3JpdGUgc2lkZSBob2xk cyB0aGUgcmVzb3VyY2VfbG9jayBhdCBsZWFzdC4uCgo+ICAJcmV0ID0gcGNpX21tYXBfcGFnZV9y YW5nZShkZXYsIGksIHZtYSwKPiAgCQkJCSAgZnByaXYtPm1tYXBfc3RhdGUsIHdyaXRlX2NvbWJp bmUpOwoKQXQgdGhpcyBwb2ludCB0aGUgdm1hIGlzbid0IGxpbmtlZCBpbnRvIHRoZSBhZGRyZXNz IHNwYWNlLCBzbyBkb2Vzbid0CnRoaXMgaGFwcGVuPwoKICAgICBDUFUgMCAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICBDUFUxCiBtbWFwX3JlZ2lvbigpCiAgIHZtYSA9IHZtX2FyZWFf YWxsb2MKICAgcHJvY19idXNfcGNpX21tYXAKICAgIGlvbWVtX2lzX2V4Y2x1c2l2ZQogICAgcGNp X21tYXBfcGFnZV9yYW5nZQogICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgIHJldm9rZV9kZXZtZW0KICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgdW5tYXBfbWFwcGluZ19yYW5nZSgpCiAgICAgLy8gdm1hIGlzIG5vdCBsaW5rZWQgdG8g dGhlIGFkZHJlc3Mgc3BhY2UgaGVyZSwKICAgICAvLyB1bm1hcCBkb2Vzbid0IGZpbmQgaXQKICB2 bWFfbGluaygpIAogICEhISBUaGUgVk1BIGdldHMgbWFwcGVkIHdpdGggdGhlIHJldm9rZWQgUFRF cwoKSSBjb3VsZG4ndCBmaW5kIGFueXRoaW5nIHRoYXQgcHJldmVudHMgaXQgYXQgbGVhc3QsIG5v IG1tYXBfc2VtIG9uIHRoZQp1bm1hcCBzaWRlLCBqdXN0IHRoZSBpX21tYXBfbG9jawoKTm90IHNl ZWluZyBob3cgYWRkcmVzcyBzcGFjZSBhbmQgcHJlLXBvcHVsYXRpbmcgZHVyaW5nIG1tYXAgd29y awp0b2dldGhlcj8gRGlkIEkgbWlzcyBsb2NraW5nIHNvbWVwbGFjZT8KCk5vdCBzb21ldGhpbmcg dG8gYmUgZml4ZWQgZm9yIHRoaXMgc2VyaWVzLCB0aGlzIGlzIGNsZWFybHkgYW4KaW1wcm92ZW1l bnQsIGJ1dCBzZWVtcyBsaWtlIGFub3RoZXIgcHJvYmxlbSB0byB0YWNrbGU/CgpKYXNvbgoKX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtl cm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0 dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5l bAo=