From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Brodsky Subject: Re: [PATCH v13 17/20] media/v4l2-core, arm64: untag user pointers in videobuf_dma_contig_user_get Date: Mon, 25 Mar 2019 14:08:30 +0000 Message-ID: References: <20190322160726.GV13384@arrakis.emea.arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190322160726.GV13384-pQd4kjVL+RGcEQQL7YIRtlaTQe2KTcn/@public.gmane.org> Content-Language: en-GB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "amd-gfx" To: Catalin Marinas , Andrey Konovalov Cc: Mark Rutland , Kate Stewart , kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Peter Zijlstra , Will Deacon , Alexei Starovoitov , dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, Eric Dumazet , linux-kselftest-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Chintan Pandya , Vincenzo Frascino , Shuah Khan , Ingo Molnar , linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "David (ChunMing) Zhou" , Jacob Bramley , Daniel Borkmann , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Szabolcs Nagy , Ingo Molnar , Dmitry Vyukov , Ramana Radhakrishnan , Dave Martin List-Id: linux-arch.vger.kernel.org T24gMjIvMDMvMjAxOSAxNjowNywgQ2F0YWxpbiBNYXJpbmFzIHdyb3RlOgo+IE9uIFdlZCwgTWFy IDIwLCAyMDE5IGF0IDAzOjUxOjMxUE0gKzAxMDAsIEFuZHJleSBLb25vdmFsb3Ygd3JvdGU6Cj4+ IFRoaXMgcGF0Y2ggaXMgYSBwYXJ0IG9mIGEgc2VyaWVzIHRoYXQgZXh0ZW5kcyBhcm02NCBrZXJu ZWwgQUJJIHRvIGFsbG93IHRvCj4+IHBhc3MgdGFnZ2VkIHVzZXIgcG9pbnRlcnMgKHdpdGggdGhl IHRvcCBieXRlIHNldCB0byBzb21ldGhpbmcgZWxzZSBvdGhlcgo+PiB0aGFuIDB4MDApIGFzIHN5 c2NhbGwgYXJndW1lbnRzLgo+Pgo+PiB2aWRlb2J1Zl9kbWFfY29udGlnX3VzZXJfZ2V0KCkgdXNl cyBwcm92aWRlZCB1c2VyIHBvaW50ZXJzIGZvciB2bWEKPj4gbG9va3Vwcywgd2hpY2ggY2FuIG9u bHkgYnkgZG9uZSB3aXRoIHVudGFnZ2VkIHBvaW50ZXJzLgo+Pgo+PiBVbnRhZyB0aGUgcG9pbnRl cnMgaW4gdGhpcyBmdW5jdGlvbi4KPj4KPj4gU2lnbmVkLW9mZi1ieTogQW5kcmV5IEtvbm92YWxv diA8YW5kcmV5a252bEBnb29nbGUuY29tPgo+PiAtLS0KPj4gICBkcml2ZXJzL21lZGlhL3Y0bDIt Y29yZS92aWRlb2J1Zi1kbWEtY29udGlnLmMgfCA5ICsrKysrLS0tLQo+PiAgIDEgZmlsZSBjaGFu Z2VkLCA1IGluc2VydGlvbnMoKyksIDQgZGVsZXRpb25zKC0pCj4+Cj4+IGRpZmYgLS1naXQgYS9k cml2ZXJzL21lZGlhL3Y0bDItY29yZS92aWRlb2J1Zi1kbWEtY29udGlnLmMgYi9kcml2ZXJzL21l ZGlhL3Y0bDItY29yZS92aWRlb2J1Zi1kbWEtY29udGlnLmMKPj4gaW5kZXggZTFiZjUwZGY0Yzcw Li44YTFkZGQxNDZiMTcgMTAwNjQ0Cj4+IC0tLSBhL2RyaXZlcnMvbWVkaWEvdjRsMi1jb3JlL3Zp ZGVvYnVmLWRtYS1jb250aWcuYwo+PiArKysgYi9kcml2ZXJzL21lZGlhL3Y0bDItY29yZS92aWRl b2J1Zi1kbWEtY29udGlnLmMKPj4gQEAgLTE2MCw2ICsxNjAsNyBAQCBzdGF0aWMgdm9pZCB2aWRl b2J1Zl9kbWFfY29udGlnX3VzZXJfcHV0KHN0cnVjdCB2aWRlb2J1Zl9kbWFfY29udGlnX21lbW9y eSAqbWVtKQo+PiAgIHN0YXRpYyBpbnQgdmlkZW9idWZfZG1hX2NvbnRpZ191c2VyX2dldChzdHJ1 Y3QgdmlkZW9idWZfZG1hX2NvbnRpZ19tZW1vcnkgKm1lbSwKPj4gICAJCQkJCXN0cnVjdCB2aWRl b2J1Zl9idWZmZXIgKnZiKQo+PiAgIHsKPj4gKwl1bnNpZ25lZCBsb25nIHVudGFnZ2VkX2JhZGRy ID0gdW50YWdnZWRfYWRkcih2Yi0+YmFkZHIpOwo+PiAgIAlzdHJ1Y3QgbW1fc3RydWN0ICptbSA9 IGN1cnJlbnQtPm1tOwo+PiAgIAlzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKnZtYTsKPj4gICAJdW5z aWduZWQgbG9uZyBwcmV2X3BmbiwgdGhpc19wZm47Cj4+IEBAIC0xNjcsMjIgKzE2OCwyMiBAQCBz dGF0aWMgaW50IHZpZGVvYnVmX2RtYV9jb250aWdfdXNlcl9nZXQoc3RydWN0IHZpZGVvYnVmX2Rt YV9jb250aWdfbWVtb3J5ICptZW0sCj4+ICAgCXVuc2lnbmVkIGludCBvZmZzZXQ7Cj4+ICAgCWlu dCByZXQ7Cj4+ICAgCj4+IC0Jb2Zmc2V0ID0gdmItPmJhZGRyICYgflBBR0VfTUFTSzsKPj4gKwlv ZmZzZXQgPSB1bnRhZ2dlZF9iYWRkciAmIH5QQUdFX01BU0s7Cj4+ICAgCW1lbS0+c2l6ZSA9IFBB R0VfQUxJR04odmItPnNpemUgKyBvZmZzZXQpOwo+PiAgIAlyZXQgPSAtRUlOVkFMOwo+PiAgIAo+ PiAgIAlkb3duX3JlYWQoJm1tLT5tbWFwX3NlbSk7Cj4+ICAgCj4+IC0Jdm1hID0gZmluZF92bWEo bW0sIHZiLT5iYWRkcik7Cj4+ICsJdm1hID0gZmluZF92bWEobW0sIHVudGFnZ2VkX2JhZGRyKTsK Pj4gICAJaWYgKCF2bWEpCj4+ICAgCQlnb3RvIG91dF91cDsKPj4gICAKPj4gLQlpZiAoKHZiLT5i YWRkciArIG1lbS0+c2l6ZSkgPiB2bWEtPnZtX2VuZCkKPj4gKwlpZiAoKHVudGFnZ2VkX2JhZGRy ICsgbWVtLT5zaXplKSA+IHZtYS0+dm1fZW5kKQo+PiAgIAkJZ290byBvdXRfdXA7Cj4+ICAgCj4+ ICAgCXBhZ2VzX2RvbmUgPSAwOwo+PiAgIAlwcmV2X3BmbiA9IDA7IC8qIGtpbGwgd2FybmluZyAq Lwo+PiAtCXVzZXJfYWRkcmVzcyA9IHZiLT5iYWRkcjsKPj4gKwl1c2VyX2FkZHJlc3MgPSB1bnRh Z2dlZF9iYWRkcjsKPj4gICAKPj4gICAJd2hpbGUgKHBhZ2VzX2RvbmUgPCAobWVtLT5zaXplID4+ IFBBR0VfU0hJRlQpKSB7Cj4+ICAgCQlyZXQgPSBmb2xsb3dfcGZuKHZtYSwgdXNlcl9hZGRyZXNz LCAmdGhpc19wZm4pOwo+IEkgZG9uJ3QgdGhpbmsgdmItPmJhZGRyIGhlcmUgaXMgYW5vbnltb3Vz IG1tYXAoKSBidXQgd29ydGggY2hlY2tpbmcgdGhlCj4gY2FsbCBwYXRocy4KCkkgc3BlbnQgc29t ZSB0aW1lIG9uIHRoaXMsIEkgZGlkbid0IGZpbmQgYW55IHJlc3RyaWN0aW9uIG9uIHRoZSBraW5k IG9mIG1hcHBpbmcgCnRoYXQncyBhbGxvd2VkIGhlcmUuIFRoZSBBUEkgcmVnYXJkaW5nIFY0TDJf TUVNT1JZX1VTRVJQVFIgZG9lc24ndCBzZWVtIHRvIHNheSAKYW55dGhpbmcgYWJvdXQgdGhhdCBl aXRoZXIgWzBdIFsxXS4gSXQncyBwcm9iYWJseSBiZXN0IHRvIGFzayB0aGUgVjRMMiBtYWludGFp bmVycy4KCktldmluCgpbMF0gaHR0cHM6Ly93d3cua2VybmVsLm9yZy9kb2MvaHRtbC9sYXRlc3Qv bWVkaWEvdWFwaS92NGwvdmlkaW9jLXFidWYuaHRtbApbMV0gaHR0cHM6Ly93d3cua2VybmVsLm9y Zy9kb2MvaHRtbC9sYXRlc3QvbWVkaWEvdWFwaS92NGwvdXNlcnAuaHRtbApfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwphbWQtZ2Z4IG1haWxpbmcgbGlzdAph bWQtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2FtZC1nZng=