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GET /api/patches/795961/?format=api
{ "id": 795961, "url": "http://patchwork.ozlabs.org/api/patches/795961/?format=api", "web_url": "http://patchwork.ozlabs.org/project/kvm-ppc/patch/1501537199-19233-1-git-send-email-linuxram@us.ibm.com/", "project": { "id": 23, "url": "http://patchwork.ozlabs.org/api/projects/23/?format=api", "name": "KVM PowerPC development", "link_name": "kvm-ppc", "list_id": "kvm-ppc.vger.kernel.org", "list_email": "kvm-ppc@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1501537199-19233-1-git-send-email-linuxram@us.ibm.com>", "list_archive_url": null, "date": "2017-07-31T21:39:59", "name": "kvmppc: protection keys fix", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "e543940c72ee434101ccd67ab25c3dfbdac756f0", "submitter": { "id": 2667, "url": "http://patchwork.ozlabs.org/api/people/2667/?format=api", "name": "Ram Pai", "email": "linuxram@us.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/kvm-ppc/patch/1501537199-19233-1-git-send-email-linuxram@us.ibm.com/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/795961/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/795961/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<kvm-ppc-owner@vger.kernel.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=kvm-ppc-owner@vger.kernel.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"ONkV1iPH\"; dkim-atps=neutral" ], "Received": [ "from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xLtD757Kwz9s0g\n\tfor <incoming@patchwork.ozlabs.org>;\n\tTue, 1 Aug 2017 07:40:39 +1000 (AEST)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1751114AbdGaVki (ORCPT <rfc822;incoming@patchwork.ozlabs.org>);\n\tMon, 31 Jul 2017 17:40:38 -0400", "from mail-qt0-f195.google.com ([209.85.216.195]:36987 \"EHLO\n\tmail-qt0-f195.google.com\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1751113AbdGaVki (ORCPT\n\t<rfc822;kvm-ppc@vger.kernel.org>); Mon, 31 Jul 2017 17:40:38 -0400", "by mail-qt0-f195.google.com with SMTP id d10so18342703qtb.4\n\tfor <kvm-ppc@vger.kernel.org>; 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\n\tMon, 31 Jul 2017 14:40:37 -0700 (PDT)", "From": "Ram Pai <linuxram@us.ibm.com>", "To": "kvm-ppc@vger.kernel.org", "Cc": "benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,\n\tkhandual@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com,\n\tbsingharora@gmail.com, hbabu@us.ibm.com, linuxram@us.ibm.com,\n\tbauerman@linux.vnet.ibm.com", "Subject": "[PATCH] kvmppc: protection keys fix", "Date": "Mon, 31 Jul 2017 14:39:59 -0700", "Message-Id": "<1501537199-19233-1-git-send-email-linuxram@us.ibm.com>", "X-Mailer": "git-send-email 1.7.1", "Sender": "kvm-ppc-owner@vger.kernel.org", "Precedence": "bulk", "List-ID": "<kvm-ppc.vger.kernel.org>", "X-Mailing-List": "kvm-ppc@vger.kernel.org" }, "content": "kvmppc_do_h_enter() hcall, clobbers the high-order two bits of\nthe protection key, in the lower pte (ptel). Any pkey number\nabove 7, hence fails to operate correctly.\n\nThe following patch, preserves the pkey bits.\n\nAcked-by: Balbir Singh <bsingharora@gmail.com>\nReviewed-by: Paul Mackerras <paulus@ozlabs.org>\nSigned-off-by: Ram Pai <linuxram@us.ibm.com>\n---\n arch/powerpc/include/asm/book3s/64/mmu-hash.h | 1 +\n arch/powerpc/kvm/book3s_hv_rm_mmu.c | 2 +-\n 2 files changed, 2 insertions(+), 1 deletion(-)", "diff": "diff --git a/arch/powerpc/include/asm/book3s/64/mmu-hash.h b/arch/powerpc/include/asm/book3s/64/mmu-hash.h\nindex 6981a52..5c6b18a 100644\n--- a/arch/powerpc/include/asm/book3s/64/mmu-hash.h\n+++ b/arch/powerpc/include/asm/book3s/64/mmu-hash.h\n@@ -104,6 +104,7 @@\n #define HPTE_R_C\t\tASM_CONST(0x0000000000000080)\n #define HPTE_R_R\t\tASM_CONST(0x0000000000000100)\n #define HPTE_R_KEY_LO\t\tASM_CONST(0x0000000000000e00)\n+#define HPTE_R_KEY\t\t(HPTE_R_KEY_LO | HPTE_R_KEY_HI)\n \n #define HPTE_V_1TB_SEG\t\tASM_CONST(0x4000000000000000)\n #define HPTE_V_VRMA_MASK\tASM_CONST(0x4001ffffff000000)\ndiff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c\nindex ce6f212..d9462ab 100644\n--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c\n+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c\n@@ -268,7 +268,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,\n \tif (!realmode)\n \t\tlocal_irq_restore(irq_flags);\n \n-\tptel &= ~(HPTE_R_PP0 - psize);\n+\tptel &= HPTE_R_KEY | HPTE_R_PP0 | (psize-1);\n \tptel |= pa;\n \n \tif (pa)\n", "prefixes": [] }