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Fri, 24 Jun 2022 12:42:32 +0000 Message-ID: <2049c227-9a3d-6e43-01bb-639267b7ddad@suse.com> Date: Fri, 24 Jun 2022 14:42:32 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 Subject: Re: [PATCH v4] xen/gntdev: Avoid blocking in unmap_grant_pages() Content-Language: en-US To: Demi Marie Obenour , Stefano Stabellini , Oleksandr Tyshchenko , David Vrabel , Jennifer Herbert Cc: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org References: <20220622022726.2538-1-demi@invisiblethingslab.com> From: Juergen Gross In-Reply-To: <20220622022726.2538-1-demi@invisiblethingslab.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------gPZ7BfZdz9D3IEOV00gg8qhO" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------gPZ7BfZdz9D3IEOV00gg8qhO Content-Type: multipart/mixed; boundary="------------87al14GsXIQ9g60d3eHk02fC"; protected-headers="v1" From: Juergen Gross To: Demi Marie Obenour , Stefano Stabellini , Oleksandr Tyshchenko , David Vrabel , Jennifer Herbert Cc: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Message-ID: <2049c227-9a3d-6e43-01bb-639267b7ddad@suse.com> Subject: Re: [PATCH v4] xen/gntdev: Avoid blocking in unmap_grant_pages() References: <20220622022726.2538-1-demi@invisiblethingslab.com> In-Reply-To: <20220622022726.2538-1-demi@invisiblethingslab.com> --------------87al14GsXIQ9g60d3eHk02fC Content-Type: multipart/mixed; boundary="------------Bs1GaeD0uKddp5Jn7uvjrlcO" --------------Bs1GaeD0uKddp5Jn7uvjrlcO Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 T24gMjIuMDYuMjIgMDQ6MjcsIERlbWkgTWFyaWUgT2Jlbm91ciB3cm90ZToNCj4gdW5tYXBf Z3JhbnRfcGFnZXMoKSBjdXJyZW50bHkgd2FpdHMgZm9yIHRoZSBwYWdlcyB0byBubyBsb25n ZXIgYmUgdXNlZC4NCj4gSW4gaHR0cHM6Ly9naXRodWIuY29tL1F1YmVzT1MvcXViZXMtaXNz dWVzL2lzc3Vlcy83NDgxLCB0aGlzIGxlYWQgdG8gYQ0KPiBkZWFkbG9jayBhZ2FpbnN0IGk5 MTU6IGk5MTUgd2FzIHdhaXRpbmcgZm9yIGdudGRldidzIE1NVSBub3RpZmllciB0bw0KPiBm aW5pc2gsIHdoaWxlIGdudGRldiB3YXMgd2FpdGluZyBmb3IgaTkxNSB0byBmcmVlIGl0cyBw YWdlcy4gIEkgYWxzbw0KPiBiZWxpZXZlIHRoaXMgaXMgcmVzcG9uc2libGUgZm9yIHZhcmlv dXMgZGVhZGxvY2tzIEkgaGF2ZSBleHBlcmllbmNlZCBpbg0KPiB0aGUgcGFzdC4NCj4gDQo+ IEF2b2lkIHRoZXNlIHByb2JsZW1zIGJ5IG1ha2luZyB1bm1hcF9ncmFudF9wYWdlcyBhc3lu Yy4gIFRoaXMgcmVxdWlyZXMNCj4gbWFraW5nIGl0IHJldHVybiB2b2lkLCBhcyBhbnkgZXJy b3JzIHdpbGwgbm90IGJlIGF2YWlsYWJsZSB3aGVuIHRoZQ0KPiBmdW5jdGlvbiByZXR1cm5z LiAgRm9ydHVuYXRlbHksIHRoZSBvbmx5IHVzZSBvZiB0aGUgcmV0dXJuIHZhbHVlIGlzIGEN Cj4gV0FSTl9PTigpLCB3aGljaCBjYW4gYmUgcmVwbGFjZWQgYnkgYSBXQVJOX09OIHdoZW4g dGhlIGVycm9yIGlzDQo+IGRldGVjdGVkLiAgQWRkaXRpb25hbGx5LCBhIGZhaWxlZCBjYWxs IHdpbGwgbm90IHByZXZlbnQgZnVydGhlciBjYWxscw0KPiBmcm9tIGJlaW5nIG1hZGUsIGJ1 dCB0aGlzIGlzIGhhcm1sZXNzLg0KPiANCj4gQmVjYXVzZSB1bm1hcF9ncmFudF9wYWdlcyBp cyBub3cgYXN5bmMsIHRoZSBncmFudCBoYW5kbGUgd2lsbCBiZSBzZW50IHRvDQo+IElOVkFM SURfR1JBTlRfSEFORExFIHRvbyBsYXRlIHRvIHByZXZlbnQgbXVsdGlwbGUgdW5tYXBzIG9m IHRoZSBzYW1lDQo+IGhhbmRsZS4gIEluc3RlYWQsIGEgc2VwYXJhdGUgYm9vbCBhcnJheSBp cyBhbGxvY2F0ZWQgZm9yIHRoaXMgcHVycG9zZS4NCj4gVGhpcyB3YXN0ZXMgbWVtb3J5LCBi dXQgc3R1ZmZpbmcgdGhpcyBpbmZvcm1hdGlvbiBpbiBwYWRkaW5nIGJ5dGVzIGlzDQo+IHRv byBmcmFnaWxlLiAgRnVydGhlcm1vcmUsIGl0IGlzIG5lY2Vzc2FyeSB0byBncmFiIGEgcmVm ZXJlbmNlIHRvIHRoZQ0KPiBtYXAgYmVmb3JlIG1ha2luZyB0aGUgYXN5bmNocm9ub3VzIGNh bGwsIGFuZCByZWxlYXNlIHRoZSByZWZlcmVuY2Ugd2hlbg0KPiB0aGUgY2FsbCByZXR1cm5z Lg0KPiANCj4gSXQgaXMgYWxzbyBuZWNlc3NhcnkgdG8gZ3VhcmQgYWdhaW5zdCByZWVudHJh bmN5IGluIGdudGRldl9tYXBfcHV0KCksDQo+IGFuZCB0byBoYW5kbGUgdGhlIGNhc2Ugd2hl cmUgdXNlcnNwYWNlIHRyaWVzIHRvIG1hcCBhIG1hcHBpbmcgd2hvc2UNCj4gY29udGVudHMg aGF2ZSBub3QgYWxsIGJlZW4gZnJlZWQgeWV0Lg0KPiANCj4gRml4ZXM6IDc0NTI4MjI1NmM3 NSAoInhlbi9nbnRkZXY6IHNhZmVseSB1bm1hcCBncmFudHMgaW4gY2FzZSB0aGV5IGFyZSBz dGlsbCBpbiB1c2UiKQ0KPiBDYzogc3RhYmxlQHZnZXIua2VybmVsLm9yZw0KPiBTaWduZWQt b2ZmLWJ5OiBEZW1pIE1hcmllIE9iZW5vdXIgPGRlbWlAaW52aXNpYmxldGhpbmdzbGFiLmNv bT4NCg0KUHVzaGVkIHRvIHhlbi90aXAuZ2l0IGZvci1saW51cy01LjE5YQ0KDQoNCkp1ZXJn ZW4NCg== --------------Bs1GaeD0uKddp5Jn7uvjrlcO Content-Type: application/pgp-keys; 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