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d="scan'208";a="550676961" Received: from akleen-mobl1.amr.corp.intel.com (HELO [10.209.7.237]) ([10.209.7.237]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jun 2021 05:36:54 -0700 Subject: Re: [PATCH v1 6/8] dma: Add return value to dma_unmap_page To: Robin Murphy , mst@redhat.com References: <20210603004133.4079390-1-ak@linux.intel.com> <20210603004133.4079390-7-ak@linux.intel.com> From: Andi Kleen Message-ID: Date: Thu, 3 Jun 2021 05:36:53 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.2 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Cc: jasowang@redhat.com, x86@kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, jpoimboe@redhat.com, hch@lst.de X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Cj4KPiBXaGF0IGl0IGxvb2tzIGxpa2UgdG8gbWUgaXMgYWJ1c2luZyBTV0lPVExCJ3MgaW50ZXJu YWwgaG91c2VrZWVwaW5nIHRvIAo+IGtlZXAgdHJhY2sgb2YgdmlydGlvLXNwZWNpZmljIHN0YXRl LiBUaGUgRE1BIEFQSSBkb2VzIG5vdCBhdHRlbXB0IHRvIAo+IHZhbGlkYXRlIGNhbGxzIGluIGdl bmVyYWwgc2luY2UgaW4gbWFueSBjYXNlcyB0aGUgYWRkaXRpb25hbCBvdmVyaGVhZCAKPiB3b3Vs ZCBiZSBwcm9oaWJpdGl2ZS4gSXQgaGFzIGFsd2F5cyBiZWVuIGNhbGxlcnMnIHJlc3BvbnNpYmls aXR5IHRvIAo+IGtlZXAgdHJhY2sgb2Ygd2hhdCB0aGV5IG1hcHBlZCBhbmQgbWFrZSBzdXJlIHN5 bmMvdW5tYXAgY2FsbHMgbWF0Y2gsIAo+IGFuZCB0aGVyZSBhcmUgbWFueSwgbWFueSwgc3VidGxl IGFuZCBub3Qtc28tc3VidGxlIHdheXMgZm9yIHRoaW5ncyB0byAKPiBnbyB3cm9uZyBpZiB0aGV5 IGRvbid0LiBJZiB2aXJ0aW8gaXMgbm90IGRvaW5nIGEgZ29vZCBlbm91Z2ggam9iIG9mIAo+IHRo YXQsIHdoYXQncyB0aGUganVzdGlmaWNhdGlvbiBmb3IgbWFraW5nIGl0IHRoZSBETUEgQVBJJ3Mg cHJvYmxlbT8KCkluIHRoaXMgY2FzZSBpdCdzIG5vdCBwcm9oaWJpdGl2ZSBhdCBhbGwuIEp1c3Qg YWRkaW5nIGEgZmV3IGVycm9yIApyZXR1cm5zLCBhbmQgY2hlY2tpbmcgdGhlIG92ZXJsYXAgKHdo aWNoIHNlZW1zIHRvIGhhdmUgYmVlbiBhbHJlYWR5IApzb2x2ZWQgYW55d2F5cykgSSB3b3VsZCBh cmd1ZSB0aGUgZXJyb3IgcmV0dXJucyBhcmUgZ29vZCBwcmFjdGljZSAKYW55d2F5cywgc28gdGhh dCBBUEkgdXNlcnMgY2FuIGNoZWNrIHRoYXQgc29tZXRoaW5nIGJhZCBoYXBwZW5pbmcgYW5kIAph Ym9ydC7CoCBUaGUgRE1BIEFQSSB3YXMgbmV2ZXIgdmVyeSBnb29kIGF0IHByb3BlciBlcnJvciBo YW5kbGluZywgYnV0IAp0aGVyZSdzIG5vIHJlYXNvbiBhdCBhbGwgdG8gY29udGludWUgYmVpbmcg YmFkIGl0IGZvcmV2ZXIuCgpBRkFJSyB0aGUgcmVzdCBqdXN0IHdvcmtzIGFueXdheXMsIHNvIGl0 J3Mgbm90IHJlYWxseSBhIG5ldyBwcm9ibGVtIHRvIApiZSBzb2x2ZWQuCgo+Cj4+IEEgbmV3IGNh bGxiYWNrIGlzIHVzZWQgdG8gYXZvaWQgY2hhbmdpbmcgYWxsIHRoZSBJT01NVSBkcml2ZXJzLgo+ Cj4gTml0OiBwcmVzdW1hYmx5IGJ5ICJJT01NVSBkcml2ZXJzIiB5b3UgYWN0dWFsbHkgbWVhbiBh cmNoIERNQSBBUEkgCj4gYmFja2VuZHM/Clllcwo+Cj4gwqBGdXJ0aGVybW9yZSwgQUZBSUNTIGl0 J3Mgc3RpbGwgbm90IGdvaW5nIHRvIGhlbHAgYWdhaW5zdCBleGZpbHRyYXRpbmcgCj4gZ3Vlc3Qg bWVtb3J5IGJ5IG92ZXItdW5tYXBwaW5nIHRoZSBvcmlnaW5hbCBTV0lPVExCIHNsb3QgKndpdGhv dXQqIAo+IGdvaW5nIHBhc3QgdGhlIGVuZCBvZiB0aGUgd2hvbGUgYnVmZmVyLAoKVGhhdCB3b3Vs ZCBiZSBqdXN0IGV4ZmlsdHJhdGluZyBkYXRhIHRoYXQgaXMgYWxyZWFkeSBzaGFyZWQsIHVubGVz cyBJJ20gCm1pc3VuZGVyc3RhbmRpbmcgeW91LgoKLUFuZGkKCgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlz dHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3Jn L21haWxtYW4vbGlzdGluZm8vaW9tbXU=