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Fri, 15 Jan 2021 05:44:11 -0800 (PST) Date: Fri, 15 Jan 2021 13:44:10 +0000 From: Lee Jones To: christian.koenig@amd.com Subject: Re: [PATCH] drm/amd/display: fix the system memory page fault because of copy overflow Message-ID: <20210115134410.GL3975472@dell> References: <20210115184658.513045-1-ray.huang@amd.com> <1c67eae5-a77c-b6af-4f80-94b5b80733eb@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1c67eae5-a77c-b6af-4f80-94b5b80733eb@gmail.com> X-Mailman-Approved-At: Fri, 15 Jan 2021 15:08:45 +0000 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alex Deucher , Jinzhou Su , Huang Rui , changfeng.zhu@amd.com, amd-gfx@lists.freedesktop.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" T24gRnJpLCAxNSBKYW4gMjAyMSwgQ2hyaXN0aWFuIEvDtm5pZyB3cm90ZToKCj4gQW0gMTUuMDEu MjEgdW0gMTk6NDYgc2NocmllYiBIdWFuZyBSdWk6Cj4gPiBUaGUgYnVmZmVyIGlzIGFsbG9jYXRl ZCB3aXRoIHRoZSBzaXplIG9mIHBvaW50ZXIgYW5kIGNvcHkgd2l0aCB0aGUgc2l6ZSBvZgo+ID4g ZGF0YSBzdHJ1Y3R1cmUuIFRoZW4gdHJpZ2dlciB0aGUgc3lzdGVtIG1lbW9yeSBwYWdlIGZhdWx0 LiBVc2UgdGhlCj4gPiBvcmlnbmFsIGRhdGEgc3RydWN0dXJlIHRvIGdldCB0aGUgb2JqZWN0IHNp emUuCj4gPiAKPiA+IEZpeGVzOiBhOGUzMDAwNWIgZHJtL2FtZC9kaXNwbGF5L2RjL2NvcmUvZGNf bGluazogTW92ZSBzb21lIGxvY2FsIGRhdGEKPiA+IGZyb20gdGhlIHN0YWNrIHRvIHRoZSBoZWFw Cj4gPiAKPiA+IFNpZ25lZC1vZmYtYnk6IEh1YW5nIFJ1aSA8cmF5Lmh1YW5nQGFtZC5jb20+Cj4g PiBDYzogTGVlIEpvbmVzIDxsZWUuam9uZXNAbGluYXJvLm9yZz4KPiA+IC0tLQo+ID4gICBkcml2 ZXJzL2dwdS9kcm0vYW1kL2Rpc3BsYXkvZGMvY29yZS9kY19saW5rLmMgfCA0ICsrLS0KPiA+ICAg MSBmaWxlIGNoYW5nZWQsIDIgaW5zZXJ0aW9ucygrKSwgMiBkZWxldGlvbnMoLSkKPiA+IAo+ID4g ZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9hbWQvZGlzcGxheS9kYy9jb3JlL2RjX2xpbmsu YyBiL2RyaXZlcnMvZ3B1L2RybS9hbWQvZGlzcGxheS9kYy9jb3JlL2RjX2xpbmsuYwo+ID4gaW5k ZXggNjk1NzNkNjcwNTZkLi43MzE3ODk3OGFlNzQgMTAwNjQ0Cj4gPiAtLS0gYS9kcml2ZXJzL2dw dS9kcm0vYW1kL2Rpc3BsYXkvZGMvY29yZS9kY19saW5rLmMKPiA+ICsrKyBiL2RyaXZlcnMvZ3B1 L2RybS9hbWQvZGlzcGxheS9kYy9jb3JlL2RjX2xpbmsuYwo+ID4gQEAgLTEzODAsNyArMTM4MCw3 IEBAIHN0YXRpYyBib29sIGRjX2xpbmtfY29uc3RydWN0KHN0cnVjdCBkY19saW5rICpsaW5rLAo+ ID4gICAJRENfTE9HR0VSX0lOSVQoZGNfY3R4LT5sb2dnZXIpOwo+ID4gLQlpbmZvID0ga3phbGxv YyhzaXplb2YoaW5mbyksIEdGUF9LRVJORUwpOwo+ID4gKwlpbmZvID0ga3phbGxvYyhzaXplb2Yo c3RydWN0IGludGVncmF0ZWRfaW5mbyksIEdGUF9LRVJORUwpOwo+IAo+IFRoYXQgc2hvdWxkIHBy b2JhYmx5IGJlIHNpemVvZigqaW5mbykgaW5zdGVhZCwgd2UgdXN1YWxseSB0cnkgdG8gYXZvaWQK PiBzaXplb2Yoc3RydWN0IC4uLikgaW4gdGhlIGtlcm5lbC4KPiAKPiBUaGVyZSBhcmUgc29tZSBh dXRvbWF0ZWQgc2NyaXB0cyBpbiBwbGFjZSB3aGljaCB3aWxsIHNlbmQgeW91IGEgcGF0Y2ggdG8K PiBjaGFuZ2UgaXQgb3RoZXJ3aXNlLgo+IAo+ID4gICAJaWYgKCFpbmZvKQo+ID4gICAJCWdvdG8g Y3JlYXRlX2ZhaWw7Cj4gPiBAQCAtMTU0NSw3ICsxNTQ1LDcgQEAgc3RhdGljIGJvb2wgZGNfbGlu a19jb25zdHJ1Y3Qoc3RydWN0IGRjX2xpbmsgKmxpbmssCj4gPiAgIAl9Cj4gPiAgIAlpZiAoYmlv cy0+aW50ZWdyYXRlZF9pbmZvKQo+ID4gLQkJbWVtY3B5KGluZm8sIGJpb3MtPmludGVncmF0ZWRf aW5mbywgc2l6ZW9mKCppbmZvKSk7Cj4gPiArCQltZW1jcHkoaW5mbywgYmlvcy0+aW50ZWdyYXRl ZF9pbmZvLCBzaXplb2Yoc3RydWN0IGludGVncmF0ZWRfaW5mbykpOwo+IAo+IFRoaXMgY2FuIHRo ZW4gYWxzbyBzdGF5IGFzIGl0IGlzLgo+IAo+IEFwYXJ0IGZyb20gdGhhdCBnb29kIGNhdGNoLgoK WWVzLCBhZ3JlZWQuCgpTb3JyeSBmb3IgdGhlIGZ1c3MuCgotLSAKTGVlIEpvbmVzIFvmnY7nkLzm lq9dClNlbmlvciBUZWNobmljYWwgTGVhZCAtIERldmVsb3BlciBTZXJ2aWNlcwpMaW5hcm8ub3Jn IOKUgiBPcGVuIHNvdXJjZSBzb2Z0d2FyZSBmb3IgQXJtIFNvQ3MKRm9sbG93IExpbmFybzogRmFj ZWJvb2sgfCBUd2l0dGVyIHwgQmxvZwpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwphbWQtZ2Z4IG1haWxpbmcgbGlzdAphbWQtZ2Z4QGxpc3RzLmZyZWVkZXNr dG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2Ft ZC1nZngK