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[66.187.233.206]) by smtp.gmail.com with ESMTPSA id j89sm3496929qte.72.2019.11.22.06.59.21 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 22 Nov 2019 06:59:22 -0800 (PST) Message-ID: <1574434760.9585.18.camel@lca.pw> Subject: Re: [PATCH v2] iommu/iova: silence warnings under memory pressure From: Qian Cai To: Joe Perches , jroedel@suse.de Date: Fri, 22 Nov 2019 09:59:20 -0500 In-Reply-To: <7fd08d481a372ea0b600f95c12166ab54ed5e267.camel@perches.com> References: <20191122025510.4319-1-cai@lca.pw> <7fd08d481a372ea0b600f95c12166ab54ed5e267.camel@perches.com> X-Mailer: Evolution 3.22.6 (3.22.6-10.el7) Mime-Version: 1.0 Cc: iommu@lists.linux-foundation.org, dwmw2@infradead.org, linux-kernel@vger.kernel.org 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gVGh1LCAyMDE5LTExLTIxIGF0IDIwOjM3IC0wODAwLCBKb2UgUGVyY2hlcyB3cm90ZToKPiBP biBUaHUsIDIwMTktMTEtMjEgYXQgMjE6NTUgLTA1MDAsIFFpYW4gQ2FpIHdyb3RlOgo+ID4gV2hl biBydW5uaW5nIGhlYXZ5IG1lbW9yeSBwcmVzc3VyZSB3b3JrbG9hZHMsIHRoaXMgNSsgb2xkIHN5 c3RlbSBpcwo+ID4gdGhyb3dpbmcgZW5kbGVzcyB3YXJuaW5ncyBiZWxvdyBiZWNhdXNlIGRpc2sg SU8gaXMgdG9vIHNsb3cgdG8gcmVjb3Zlcgo+ID4gZnJvbSBzd2FwcGluZy4gU2luY2UgdGhlIHZv bHVtZSBmcm9tIGFsbG9jX2lvdmFfZmFzdCgpIGNvdWxkIGJlIGxhcmdlLAo+ID4gb25jZSBpdCBj YWxscyBwcmludGsoKSwgaXQgd2lsbCB0cmlnZ2VyIGRpc2sgSU8gKHdyaXRpbmcgdG8gdGhlIGxv Zwo+ID4gZmlsZXMpIGFuZCBwZW5kaW5nIHNvZnRpcnFzIHdoaWNoIGNvdWxkIGNhdXNlIGFuIGlu ZmluaXRlIGxvb3AgYW5kIG1ha2UKPiA+IG5vIHByb2dyZXNzIGZvciBkYXlzIGJ5IHRoZSBvbmdv aW1uZyBtZW1vcnkgcmVjbGFpbS4gVGhpcyBpcyB0aGUgY291bnRlcgo+ID4gcGFydCBmb3IgSW50 ZWwgd2hlcmUgdGhlIEFNRCBwYXJ0IGhhcyBhbHJlYWR5IGJlZW4gbWVyZ2VkLiBTZWUgdGhlCj4g PiBjb21taXQgM2Q3MDg4OTUzMjViICgiaW9tbXUvYW1kOiBTaWxlbmNlIHdhcm5pbmdzIHVuZGVy IG1lbW9yeQo+ID4gcHJlc3N1cmUiKS4gU2luY2UgdGhlIGFsbG9jYXRpb24gZmFpbHVyZSB3aWxs IGJlIHJlcG9ydGVkIGluCj4gPiBpbnRlbF9hbGxvY19pb3ZhKCksIHNvIGp1c3QgY2FsbCBwcmlu dGtfcmF0ZWxpbXRlZCgpIHRoZXJlIGFuZCBzaWxlbmNlCj4gPiB0aGUgb25lIGluIGFsbG9jX2lv dmFfbWVtKCkgdG8gYXZvaWQgdGhlIGV4cGVuc2l2ZSB3YXJuX2FsbG9jKCkuCj4gCj4gW10KPiA+ IHYyOiB1c2UgZGV2X2Vycl9yYXRlbGltaXRlZCgpIGFuZCBpbXByb3ZlIHRoZSBjb21taXQgbWVz c2FnZXMuCj4gCj4gW10KPiA+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2lvbW11L2ludGVsLWlvbW11 LmMgYi9kcml2ZXJzL2lvbW11L2ludGVsLWlvbW11LmMKPiAKPiBbXQo+ID4gQEAgLTM0MDEsNyAr MzQwMSw4IEBAIHN0YXRpYyB1bnNpZ25lZCBsb25nIGludGVsX2FsbG9jX2lvdmEoc3RydWN0IGRl dmljZSAqZGV2LAo+ID4gIAlpb3ZhX3BmbiA9IGFsbG9jX2lvdmFfZmFzdCgmZG9tYWluLT5pb3Zh ZCwgbnJwYWdlcywKPiA+ICAJCQkJICAgSU9WQV9QRk4oZG1hX21hc2spLCB0cnVlKTsKPiA+ICAJ aWYgKHVubGlrZWx5KCFpb3ZhX3BmbikpIHsKPiA+IC0JCWRldl9lcnIoZGV2LCAiQWxsb2NhdGlu ZyAlbGQtcGFnZSBpb3ZhIGZhaWxlZCIsIG5ycGFnZXMpOwo+ID4gKwkJZGV2X2Vycl9yYXRlbGlt aXRlZChkZXYsICJBbGxvY2F0aW5nICVsZC1wYWdlIGlvdmEgZmFpbGVkIiwKPiA+ICsJCQkJICAg IG5ycGFnZXMpOwo+IAo+IFRyaXZpYToKPiAKPiBUaGlzIHNob3VsZCByZWFsbHkgaGF2ZSBhIFxu IHRlcm1pbmF0aW9uIG9uIHRoZSBmb3JtYXQgc3RyaW5nCj4gCj4gCQlkZXZfZXJyX3JhdGVsaW1p dGVkKGRldiwgIkFsbG9jYXRpbmcgJWxkLXBhZ2UgaW92YSBmYWlsZWRcbiIsCj4gCj4gCgpXaHkg ZG8geW91IHNheSBzbz8gSXQgaXMgcmlnaHQgbm93IHByaW50aW5nIHdpdGggYSBuZXdsaW5lIGFk ZGVkIGFueXdheS4KCsKgaHBzYSAwMDAwOjAzOjAwLjA6IERNQVI6IEFsbG9jYXRpbmcgMS1wYWdl IGlvdmEgZmFpbGVkCsKgaHBzYSAwMDAwOjAzOjAwLjA6IERNQVI6IEFsbG9jYXRpbmcgMS1wYWdl IGlvdmEgZmFpbGVkCsKgaHBzYSAwMDAwOjAzOjAwLjA6IERNQVI6IEFsbG9jYXRpbmcgMS1wYWdl IGlvdmEgZmFpbGVkCsKgaHBzYSAwMDAwOjAzOjAwLjA6IERNQVI6IEFsbG9jYXRpbmcgMS1wYWdl IGlvdmEgZmFpbGVkCsKgaHBzYSAwMDAwOjAzOjAwLjA6IERNQVI6IEFsbG9jYXRpbmcgMS1wYWdl IGlvdmEgZmFpbGVkCsKgaHBzYSAwMDAwOjAzOjAwLjA6IERNQVI6IEFsbG9jYXRpbmcgMS1wYWdl IGlvdmEgZmFpbGVkCsKgaHBzYSAwMDAwOjAzOjAwLjA6IERNQVI6IEFsbG9jYXRpbmcgMS1wYWdl IGlvdmEgZmFpbGVkCsKgaHBzYSAwMDAwOjAzOjAwLjA6IERNQVI6IEFsbG9jYXRpbmcgMS1wYWdl IGlvdmEgZmFpbGVkCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcK aHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vaW9tbXU=