From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B2B11CA9ECF for ; Wed, 30 Oct 2019 22:51:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8247F21929 for ; Wed, 30 Oct 2019 22:51:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="qG/d8CXm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727984AbfJ3WvF (ORCPT ); Wed, 30 Oct 2019 18:51:05 -0400 Received: from hqemgate16.nvidia.com ([216.228.121.65]:10909 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727730AbfJ3Wtz (ORCPT ); Wed, 30 Oct 2019 18:49:55 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Wed, 30 Oct 2019 15:49:59 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Wed, 30 Oct 2019 15:49:53 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Wed, 30 Oct 2019 15:49:53 -0700 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 30 Oct 2019 22:49:53 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Wed, 30 Oct 2019 22:49:52 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Wed, 30 Oct 2019 15:49:51 -0700 From: John Hubbard To: Andrew Morton CC: Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Ira Weiny , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Magnus Karlsson , Mauro Carvalho Chehab , Michael Ellerman , Michal Hocko , Mike Kravetz , Paul Mackerras , Shuah Khan , Vlastimil Babka , , , , , , , , , , , , , LKML , John Hubbard Subject: [PATCH 15/19] powerpc: book3s64: convert to pin_longterm_pages() and put_user_page() Date: Wed, 30 Oct 2019 15:49:26 -0700 Message-ID: <20191030224930.3990755-16-jhubbard@nvidia.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191030224930.3990755-1-jhubbard@nvidia.com> References: <20191030224930.3990755-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1572475799; bh=s7fqcPpOnu8FKfGfhgVfAy1waz0rDtbaZTRbQ6blVPc=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:X-NVConfidentiality: Content-Transfer-Encoding:Content-Type; b=qG/d8CXmRQ3gipI0xCfB+AF3znMbqRBtbSrisMFG1hBwHCaDuQihEdYQXf92GADhH B41r++nRUhS/uyHiDctaxr/nWwnnjUfVqpQfQ4CBEyBBBtDteiqxkjaEBUZJqY60Lj SS1qgoVbIY5nTAejmtzMmICWY3ghFXEyJU00G62teGtMWxf8NFehGpVcye+uQlZJ4X JnKM7x/JtU5w0ztu1osW2m2Oqhx5b0oExjXmdcbqkc51A7xA5/TLwBY3o0eEeCmors FD4vqZjDiCUjsW29+iE0+XfDhX7lYIKV/FGY1ocD0YKU7Gdajz+/xjx0JUrhy+/QrV NtT8saGwtAXhw== Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org 1. Convert from get_user_pages(FOLL_LONGTERM) to pin_longterm_pages(). 2. As required by pin_user_pages(), release these pages via put_user_page(). In this case, do so via put_user_pages_dirty_lock(). That has the side effect of calling set_page_dirty_lock(), instead of set_page_dirty(). This is probably more accurate. As Christoph Hellwig put it, "set_page_dirty() is only safe if we are dealing with a file backed page where we have reference on the inode it hangs off." [1] 3. Release each page in mem->hpages[] (instead of mem->hpas[]), because that is the array that pin_longterm_pages() filled in. This is more accurate and should be a little safer from a maintenance point of view. [1] https://lore.kernel.org/r/20190723153640.GB720@lst.de Signed-off-by: John Hubbard --- arch/powerpc/mm/book3s64/iommu_api.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s6= 4/iommu_api.c index 56cc84520577..69d79cb50d47 100644 --- a/arch/powerpc/mm/book3s64/iommu_api.c +++ b/arch/powerpc/mm/book3s64/iommu_api.c @@ -103,9 +103,8 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, for (entry =3D 0; entry < entries; entry +=3D chunk) { unsigned long n =3D min(entries - entry, chunk); =20 - ret =3D get_user_pages(ua + (entry << PAGE_SHIFT), n, - FOLL_WRITE | FOLL_LONGTERM, - mem->hpages + entry, NULL); + ret =3D pin_longterm_pages(ua + (entry << PAGE_SHIFT), n, + FOLL_WRITE, mem->hpages + entry, NULL); if (ret =3D=3D n) { pinned +=3D n; continue; @@ -167,9 +166,8 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, return 0; =20 free_exit: - /* free the reference taken */ - for (i =3D 0; i < pinned; i++) - put_page(mem->hpages[i]); + /* free the references taken */ + put_user_pages(mem->hpages, pinned); =20 vfree(mem->hpas); kfree(mem); @@ -212,10 +210,9 @@ static void mm_iommu_unpin(struct mm_iommu_table_group= _mem_t *mem) if (!page) continue; =20 - if (mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY) - SetPageDirty(page); + put_user_pages_dirty_lock(&mem->hpages[i], 1, + MM_IOMMU_TABLE_GROUP_PAGE_DIRTY); =20 - put_page(page); mem->hpas[i] =3D 0; } } --=20 2.23.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A45C3CA9EC7 for ; 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Wed, 30 Oct 2019 22:49:53 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Wed, 30 Oct 2019 22:49:52 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Wed, 30 Oct 2019 15:49:51 -0700 From: John Hubbard To: Andrew Morton Subject: [PATCH 15/19] powerpc: book3s64: convert to pin_longterm_pages() and put_user_page() Date: Wed, 30 Oct 2019 15:49:26 -0700 Message-ID: <20191030224930.3990755-16-jhubbard@nvidia.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191030224930.3990755-1-jhubbard@nvidia.com> References: <20191030224930.3990755-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1572475799; bh=s7fqcPpOnu8FKfGfhgVfAy1waz0rDtbaZTRbQ6blVPc=; 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Miller" , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 1. Convert from get_user_pages(FOLL_LONGTERM) to pin_longterm_pages(). 2. As required by pin_user_pages(), release these pages via put_user_page(). In this case, do so via put_user_pages_dirty_lock(). That has the side effect of calling set_page_dirty_lock(), instead of set_page_dirty(). This is probably more accurate. As Christoph Hellwig put it, "set_page_dirty() is only safe if we are dealing with a file backed page where we have reference on the inode it hangs off." [1] 3. Release each page in mem->hpages[] (instead of mem->hpas[]), because that is the array that pin_longterm_pages() filled in. This is more accurate and should be a little safer from a maintenance point of view. [1] https://lore.kernel.org/r/20190723153640.GB720@lst.de Signed-off-by: John Hubbard --- arch/powerpc/mm/book3s64/iommu_api.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s6= 4/iommu_api.c index 56cc84520577..69d79cb50d47 100644 --- a/arch/powerpc/mm/book3s64/iommu_api.c +++ b/arch/powerpc/mm/book3s64/iommu_api.c @@ -103,9 +103,8 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, for (entry =3D 0; entry < entries; entry +=3D chunk) { unsigned long n =3D min(entries - entry, chunk); =20 - ret =3D get_user_pages(ua + (entry << PAGE_SHIFT), n, - FOLL_WRITE | FOLL_LONGTERM, - mem->hpages + entry, NULL); + ret =3D pin_longterm_pages(ua + (entry << PAGE_SHIFT), n, + FOLL_WRITE, mem->hpages + entry, NULL); if (ret =3D=3D n) { pinned +=3D n; continue; @@ -167,9 +166,8 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, return 0; =20 free_exit: - /* free the reference taken */ - for (i =3D 0; i < pinned; i++) - put_page(mem->hpages[i]); + /* free the references taken */ + put_user_pages(mem->hpages, pinned); =20 vfree(mem->hpas); kfree(mem); @@ -212,10 +210,9 @@ static void mm_iommu_unpin(struct mm_iommu_table_group= _mem_t *mem) if (!page) continue; =20 - if (mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY) - SetPageDirty(page); + put_user_pages_dirty_lock(&mem->hpages[i], 1, + MM_IOMMU_TABLE_GROUP_PAGE_DIRTY); =20 - put_page(page); mem->hpas[i] =3D 0; } } --=20 2.23.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Hubbard Subject: [PATCH 15/19] powerpc: book3s64: convert to pin_longterm_pages() and put_user_page() Date: Wed, 30 Oct 2019 15:49:26 -0700 Message-ID: <20191030224930.3990755-16-jhubbard@nvidia.com> References: <20191030224930.3990755-1-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20191030224930.3990755-1-jhubbard@nvidia.com> Sender: linux-kernel-owner@vger.kernel.org To: Andrew Morton Cc: Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Ira Weiny , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Magnus Karlsson , Mauro Carvalho Chehab , Michael Ellerman M List-Id: dri-devel@lists.freedesktop.org 1. Convert from get_user_pages(FOLL_LONGTERM) to pin_longterm_pages(). 2. As required by pin_user_pages(), release these pages via put_user_page(). In this case, do so via put_user_pages_dirty_lock(). That has the side effect of calling set_page_dirty_lock(), instead of set_page_dirty(). This is probably more accurate. As Christoph Hellwig put it, "set_page_dirty() is only safe if we are dealing with a file backed page where we have reference on the inode it hangs off." [1] 3. Release each page in mem->hpages[] (instead of mem->hpas[]), because that is the array that pin_longterm_pages() filled in. This is more accurate and should be a little safer from a maintenance point of view. [1] https://lore.kernel.org/r/20190723153640.GB720@lst.de Signed-off-by: John Hubbard --- arch/powerpc/mm/book3s64/iommu_api.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s6= 4/iommu_api.c index 56cc84520577..69d79cb50d47 100644 --- a/arch/powerpc/mm/book3s64/iommu_api.c +++ b/arch/powerpc/mm/book3s64/iommu_api.c @@ -103,9 +103,8 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, for (entry =3D 0; entry < entries; entry +=3D chunk) { unsigned long n =3D min(entries - entry, chunk); =20 - ret =3D get_user_pages(ua + (entry << PAGE_SHIFT), n, - FOLL_WRITE | FOLL_LONGTERM, - mem->hpages + entry, NULL); + ret =3D pin_longterm_pages(ua + (entry << PAGE_SHIFT), n, + FOLL_WRITE, mem->hpages + entry, NULL); if (ret =3D=3D n) { pinned +=3D n; continue; @@ -167,9 +166,8 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, return 0; =20 free_exit: - /* free the reference taken */ - for (i =3D 0; i < pinned; i++) - put_page(mem->hpages[i]); + /* free the references taken */ + put_user_pages(mem->hpages, pinned); =20 vfree(mem->hpas); kfree(mem); @@ -212,10 +210,9 @@ static void mm_iommu_unpin(struct mm_iommu_table_group= _mem_t *mem) if (!page) continue; =20 - if (mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY) - SetPageDirty(page); + put_user_pages_dirty_lock(&mem->hpages[i], 1, + MM_IOMMU_TABLE_GROUP_PAGE_DIRTY); =20 - put_page(page); mem->hpas[i] =3D 0; } } --=20 2.23.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EA021CA9EC3 for ; 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Wed, 30 Oct 2019 15:49:59 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Wed, 30 Oct 2019 15:49:53 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Wed, 30 Oct 2019 15:49:53 -0700 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 30 Oct 2019 22:49:53 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Wed, 30 Oct 2019 22:49:52 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Wed, 30 Oct 2019 15:49:51 -0700 From: John Hubbard To: Andrew Morton Subject: [PATCH 15/19] powerpc: book3s64: convert to pin_longterm_pages() and put_user_page() Date: Wed, 30 Oct 2019 15:49:26 -0700 Message-ID: <20191030224930.3990755-16-jhubbard@nvidia.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191030224930.3990755-1-jhubbard@nvidia.com> References: <20191030224930.3990755-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-Mailman-Approved-At: Thu, 31 Oct 2019 09:04:21 +0000 X-Mailman-Original-DKIM-Signature: v=1; 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Miller" , Mike Kravetz Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Message-ID: <20191030224926.ugkH4RXZO9LpKOBsJ1UWuWXAJn9jx5-4evBLHy_7NY0@z> MS4gQ29udmVydCBmcm9tIGdldF91c2VyX3BhZ2VzKEZPTExfTE9OR1RFUk0pIHRvIHBpbl9sb25n dGVybV9wYWdlcygpLgoKMi4gQXMgcmVxdWlyZWQgYnkgcGluX3VzZXJfcGFnZXMoKSwgcmVsZWFz ZSB0aGVzZSBwYWdlcyB2aWEKcHV0X3VzZXJfcGFnZSgpLiBJbiB0aGlzIGNhc2UsIGRvIHNvIHZp YSBwdXRfdXNlcl9wYWdlc19kaXJ0eV9sb2NrKCkuCgpUaGF0IGhhcyB0aGUgc2lkZSBlZmZlY3Qg b2YgY2FsbGluZyBzZXRfcGFnZV9kaXJ0eV9sb2NrKCksIGluc3RlYWQKb2Ygc2V0X3BhZ2VfZGly dHkoKS4gVGhpcyBpcyBwcm9iYWJseSBtb3JlIGFjY3VyYXRlLgoKQXMgQ2hyaXN0b3BoIEhlbGx3 aWcgcHV0IGl0LCAic2V0X3BhZ2VfZGlydHkoKSBpcyBvbmx5IHNhZmUgaWYgd2UgYXJlCmRlYWxp bmcgd2l0aCBhIGZpbGUgYmFja2VkIHBhZ2Ugd2hlcmUgd2UgaGF2ZSByZWZlcmVuY2Ugb24gdGhl IGlub2RlIGl0CmhhbmdzIG9mZi4iIFsxXQoKMy4gUmVsZWFzZSBlYWNoIHBhZ2UgaW4gbWVtLT5o cGFnZXNbXSAoaW5zdGVhZCBvZiBtZW0tPmhwYXNbXSksIGJlY2F1c2UKdGhhdCBpcyB0aGUgYXJy YXkgdGhhdCBwaW5fbG9uZ3Rlcm1fcGFnZXMoKSBmaWxsZWQgaW4uIFRoaXMgaXMgbW9yZQphY2N1 cmF0ZSBhbmQgc2hvdWxkIGJlIGEgbGl0dGxlIHNhZmVyIGZyb20gYSBtYWludGVuYW5jZSBwb2lu dCBvZgp2aWV3LgoKWzFdIGh0dHBzOi8vbG9yZS5rZXJuZWwub3JnL3IvMjAxOTA3MjMxNTM2NDAu R0I3MjBAbHN0LmRlCgpTaWduZWQtb2ZmLWJ5OiBKb2huIEh1YmJhcmQgPGpodWJiYXJkQG52aWRp YS5jb20+Ci0tLQogYXJjaC9wb3dlcnBjL21tL2Jvb2szczY0L2lvbW11X2FwaS5jIHwgMTUgKysr KysrLS0tLS0tLS0tCiAxIGZpbGUgY2hhbmdlZCwgNiBpbnNlcnRpb25zKCspLCA5IGRlbGV0aW9u cygtKQoKZGlmZiAtLWdpdCBhL2FyY2gvcG93ZXJwYy9tbS9ib29rM3M2NC9pb21tdV9hcGkuYyBi L2FyY2gvcG93ZXJwYy9tbS9ib29rM3M2NC9pb21tdV9hcGkuYwppbmRleCA1NmNjODQ1MjA1Nzcu LjY5ZDc5Y2I1MGQ0NyAxMDA2NDQKLS0tIGEvYXJjaC9wb3dlcnBjL21tL2Jvb2szczY0L2lvbW11 X2FwaS5jCisrKyBiL2FyY2gvcG93ZXJwYy9tbS9ib29rM3M2NC9pb21tdV9hcGkuYwpAQCAtMTAz LDkgKzEwMyw4IEBAIHN0YXRpYyBsb25nIG1tX2lvbW11X2RvX2FsbG9jKHN0cnVjdCBtbV9zdHJ1 Y3QgKm1tLCB1bnNpZ25lZCBsb25nIHVhLAogCWZvciAoZW50cnkgPSAwOyBlbnRyeSA8IGVudHJp ZXM7IGVudHJ5ICs9IGNodW5rKSB7CiAJCXVuc2lnbmVkIGxvbmcgbiA9IG1pbihlbnRyaWVzIC0g ZW50cnksIGNodW5rKTsKIAotCQlyZXQgPSBnZXRfdXNlcl9wYWdlcyh1YSArIChlbnRyeSA8PCBQ QUdFX1NISUZUKSwgbiwKLQkJCQlGT0xMX1dSSVRFIHwgRk9MTF9MT05HVEVSTSwKLQkJCQltZW0t PmhwYWdlcyArIGVudHJ5LCBOVUxMKTsKKwkJcmV0ID0gcGluX2xvbmd0ZXJtX3BhZ2VzKHVhICsg KGVudHJ5IDw8IFBBR0VfU0hJRlQpLCBuLAorCQkJCQkgRk9MTF9XUklURSwgbWVtLT5ocGFnZXMg KyBlbnRyeSwgTlVMTCk7CiAJCWlmIChyZXQgPT0gbikgewogCQkJcGlubmVkICs9IG47CiAJCQlj b250aW51ZTsKQEAgLTE2Nyw5ICsxNjYsOCBAQCBzdGF0aWMgbG9uZyBtbV9pb21tdV9kb19hbGxv YyhzdHJ1Y3QgbW1fc3RydWN0ICptbSwgdW5zaWduZWQgbG9uZyB1YSwKIAlyZXR1cm4gMDsKIAog ZnJlZV9leGl0OgotCS8qIGZyZWUgdGhlIHJlZmVyZW5jZSB0YWtlbiAqLwotCWZvciAoaSA9IDA7 IGkgPCBwaW5uZWQ7IGkrKykKLQkJcHV0X3BhZ2UobWVtLT5ocGFnZXNbaV0pOworCS8qIGZyZWUg dGhlIHJlZmVyZW5jZXMgdGFrZW4gKi8KKwlwdXRfdXNlcl9wYWdlcyhtZW0tPmhwYWdlcywgcGlu bmVkKTsKIAogCXZmcmVlKG1lbS0+aHBhcyk7CiAJa2ZyZWUobWVtKTsKQEAgLTIxMiwxMCArMjEw LDkgQEAgc3RhdGljIHZvaWQgbW1faW9tbXVfdW5waW4oc3RydWN0IG1tX2lvbW11X3RhYmxlX2dy b3VwX21lbV90ICptZW0pCiAJCWlmICghcGFnZSkKIAkJCWNvbnRpbnVlOwogCi0JCWlmIChtZW0t PmhwYXNbaV0gJiBNTV9JT01NVV9UQUJMRV9HUk9VUF9QQUdFX0RJUlRZKQotCQkJU2V0UGFnZURp cnR5KHBhZ2UpOworCQlwdXRfdXNlcl9wYWdlc19kaXJ0eV9sb2NrKCZtZW0tPmhwYWdlc1tpXSwg MSwKKwkJCQkJICBNTV9JT01NVV9UQUJMRV9HUk9VUF9QQUdFX0RJUlRZKTsKIAotCQlwdXRfcGFn ZShwYWdlKTsKIAkJbWVtLT5ocGFzW2ldID0gMDsKIAl9CiB9Ci0tIAoyLjIzLjAKCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5n IGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVk ZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbA==