From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x2249QuNo6QVmRyRKnLdsuJEsJa+UNhatGf0Bu5RUr2LA6Wz/m0sikK/Zvoauh13EFS4pDdKU ARC-Seal: i=1; a=rsa-sha256; t=1519218188; cv=none; d=google.com; s=arc-20160816; b=MIMf/BTZDad3Nj9EsfnpV44d3K4ii9FZf1BiXCSRDil/M6AgpPPklofjnM/j1GiGF5 JQ4N9lDuoqfg+yIcm4G3XWowzQX6hhDArf2C3GKM77C9dnVxE5STyAkfs368yIPVp2AQ L1hbfpQpXN7X8nW2NqFBGqtF/Ll0gaKxl1hURP0ajYUog9AeINUTy4iLhBzehxpYUqPf c4vd/AENF91iQSb4eCU/IzsAqgdbn+K9oNm7rEiAgmEu34akdKZbZweOVyy3RZKbxGdv Jm/FcMRJ/UzbUVG7MKK86d7uscoGADF5WcaLaobFulD6fkNrYqkQ2E74CVHiofr+KW4s CWrQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=SerRLLUxeNLXq6dQ496/TQeBvzHiqxRFzpUWJMQaEzo=; b=0Rd83SNB7pzM5Yfc0ZlrgkfPqpWbWbRjXJFms8NT7e9G7bJXmX9MrQQDMdlHKuBChi 97CEVio8YUJfHUMy/oQsU80SyZlLBalDF5rL2xRu+vjJalJ7pf8Zr0A0oMwKcnd5svNE Y/O3WLn/NoWH4KLqHK2ipeq3pszNYrA4RGidLkmqCcIJw5/YV8yCgFCxgeGfXeLO+OWo TvJUU7APLqzBOd9Z1SZ9v39EjlJMYsxMPCzl7N92B1xztFc84d+izRlweZP4MV2en4NB IQ7heTMy+xA7cpFJ4WLCsj3DX12J2Z+3eWJ4aqQhwvxbOBJmdYQr7+XZvc2D19KiULFx cetw== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.71.90 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.71.90 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Simon Gaiser , Juergen Gross Subject: [PATCH 4.14 119/167] xen: Fix {set,clear}_foreign_p2m_mapping on autotranslating guests Date: Wed, 21 Feb 2018 13:48:50 +0100 Message-Id: <20180221124531.004925786@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180221124524.639039577@linuxfoundation.org> References: <20180221124524.639039577@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1593015731101166414?= X-GMAIL-MSGID: =?utf-8?q?1593015731101166414?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Simon Gaiser commit 781198f1f373c3e350dbeb3af04a7d4c81c1b8d7 upstream. Commit 82616f9599a7 ("xen: remove tests for pvh mode in pure pv paths") removed the check for autotranslation from {set,clear}_foreign_p2m_mapping but those are called by grant-table.c also on PVH/HVM guests. Cc: # 4.14 Fixes: 82616f9599a7 ("xen: remove tests for pvh mode in pure pv paths") Signed-off-by: Simon Gaiser Reviewed-by: Juergen Gross Signed-off-by: Juergen Gross Signed-off-by: Greg Kroah-Hartman --- arch/x86/xen/p2m.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -694,6 +694,9 @@ int set_foreign_p2m_mapping(struct gntta int i, ret = 0; pte_t *pte; + if (xen_feature(XENFEAT_auto_translated_physmap)) + return 0; + if (kmap_ops) { ret = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, kmap_ops, count); @@ -736,6 +739,9 @@ int clear_foreign_p2m_mapping(struct gnt { int i, ret = 0; + if (xen_feature(XENFEAT_auto_translated_physmap)) + return 0; + for (i = 0; i < count; i++) { unsigned long mfn = __pfn_to_mfn(page_to_pfn(pages[i])); unsigned long pfn = page_to_pfn(pages[i]);