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GET /api/patches/807403/?format=api
{ "id": 807403, "url": "http://patchwork.ozlabs.org/api/patches/807403/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1504066360-30128-12-git-send-email-paulus@ozlabs.org/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<1504066360-30128-12-git-send-email-paulus@ozlabs.org>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/1504066360-30128-12-git-send-email-paulus@ozlabs.org/", "date": "2017-08-30T04:12:34", "name": "[v3,11/17] powerpc: Emulate vector element load/store instructions", "commit_ref": "e61ccc7b0c413f3937dfd53b72a8ac29b226975f", "pull_url": null, "state": "accepted", "archived": false, "hash": "c732575754d4f9b454cd725f087ed68b8839c482", "submitter": { "id": 67079, "url": "http://patchwork.ozlabs.org/api/people/67079/?format=api", "name": "Paul Mackerras", "email": "paulus@ozlabs.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1504066360-30128-12-git-send-email-paulus@ozlabs.org/mbox/", "series": [ { "id": 522, "url": "http://patchwork.ozlabs.org/api/series/522/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=522", "date": "2017-08-30T04:12:25", "name": "powerpc: Do alignment fixups using analyse_instr etc.", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/522/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/807403/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/807403/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": [ "patchwork-incoming@ozlabs.org", "linuxppc-dev@lists.ozlabs.org", "linuxppc-dev@ozlabs.org" ], "Received": [ "from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xht2k4z9kz9s9Y\n\tfor <patchwork-incoming@ozlabs.org>;\n\tWed, 30 Aug 2017 14:34:54 +1000 (AEST)", "from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3xht2k3Xb0zDqLw\n\tfor <patchwork-incoming@ozlabs.org>;\n\tWed, 30 Aug 2017 14:34:54 +1000 (AEST)", "from ozlabs.org (bilbo.ozlabs.org [103.22.144.67])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3xhsYJ22PXzDqGV\n\tfor <linuxppc-dev@lists.ozlabs.org>;\n\tWed, 30 Aug 2017 14:12:52 +1000 (AEST)", "by ozlabs.org (Postfix)\n\tid 3xhsYJ0lJDz9sQl; Wed, 30 Aug 2017 14:12:52 +1000 (AEST)", "from authenticated.ozlabs.org (localhost [127.0.0.1])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPSA id 3xhsYH6Ssqz9sP5\n\tfor <linuxppc-dev@ozlabs.org>; Wed, 30 Aug 2017 14:12:51 +1000 (AEST)" ], "Authentication-Results": [ "ozlabs.org; dkim=pass (2048-bit key;\n\tsecure) header.d=ozlabs.org header.i=@ozlabs.org header.b=\"XWSl+vTo\";\n\tdkim-atps=neutral", "lists.ozlabs.org; dkim=pass (2048-bit key;\n\tsecure) header.d=ozlabs.org header.i=@ozlabs.org header.b=\"XWSl+vTo\";\n\tdkim-atps=neutral", "lists.ozlabs.org; dkim=pass (2048-bit key;\n\tsecure) header.d=ozlabs.org header.i=@ozlabs.org header.b=\"XWSl+vTo\"; \n\tdkim-atps=neutral" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ozlabs.org; s=201707; \n\tt=1504066371; bh=qiMi7qPp9GxgZMSpn2EFGV64Z45QfWyKG3dMMQZHeXw=;\n\th=From:To:Subject:Date:In-Reply-To:References:From;\n\tb=XWSl+vToM5QKjTnB/225QycOCPgLpBPcNvyYq+77CD2fiTjOLuHHzlKn6bpzQ7wx3\n\tqlj45ntxUKAr468fbAl4vT0ltHjlybSaxgUzS2weuBWd+c/rwLfYvoalULQjH66w3Z\n\tJM9s8ueirADDcIJf3iPdKJ+ORg7xU4xA5h6O4QwZiK1nvnUkFsBE9ZY5JfnDXzvRuu\n\tfuXNFYzhhbuPNNlSgGFs+vjA9atkGtsZ6Hk8y6S/BxDPsg8+ni8gWlVjqfNpOuQP5x\n\tOAMuZeLsSdRYDu5ecA4WOqTS/t31t57bjuNAsUZXIVxUhIn2oLumfTI+lK6anVDM1j\n\tEn57franpqO+Q==", "From": "Paul Mackerras <paulus@ozlabs.org>", "To": "linuxppc-dev@ozlabs.org", "Subject": "[PATCH v3 11/17] powerpc: Emulate vector element load/store\n\tinstructions", "Date": "Wed, 30 Aug 2017 14:12:34 +1000", "Message-Id": "<1504066360-30128-12-git-send-email-paulus@ozlabs.org>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1504066360-30128-1-git-send-email-paulus@ozlabs.org>", "References": "<1504066360-30128-1-git-send-email-paulus@ozlabs.org>", "X-BeenThere": "linuxppc-dev@lists.ozlabs.org", "X-Mailman-Version": "2.1.23", "Precedence": "list", "List-Id": "Linux on PowerPC Developers Mail List\n\t<linuxppc-dev.lists.ozlabs.org>", "List-Unsubscribe": "<https://lists.ozlabs.org/options/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>", "List-Archive": "<http://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>", "List-Subscribe": "<https://lists.ozlabs.org/listinfo/linuxppc-dev>,\n\t<mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>", "Errors-To": "linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org", "Sender": "\"Linuxppc-dev\"\n\t<linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org>" }, "content": "This adds code to analyse_instr() and emulate_step() to handle the\nvector element loads and stores:\n\nlvebx, lvehx, lvewx, stvebx, stvehx, stvewx.\n\nSigned-off-by: Paul Mackerras <paulus@ozlabs.org>\n---\n arch/powerpc/lib/sstep.c | 38 ++++++++++++++++++++++++++++++++++++--\n 1 file changed, 36 insertions(+), 2 deletions(-)", "diff": "diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c\nindex 91ae031..167d40d 100644\n--- a/arch/powerpc/lib/sstep.c\n+++ b/arch/powerpc/lib/sstep.c\n@@ -476,7 +476,7 @@ static nokprobe_inline int do_vec_load(int rn, unsigned long ea,\n \t\treturn -EFAULT;\n \t/* align to multiple of size */\n \tea &= ~(size - 1);\n-\terr = copy_mem_in(u.b, ea, size);\n+\terr = copy_mem_in(&u.b[ea & 0xf], ea, size);\n \tif (err)\n \t\treturn err;\n \n@@ -508,7 +508,7 @@ static nokprobe_inline int do_vec_store(int rn, unsigned long ea,\n \telse\n \t\tu.v = current->thread.vr_state.vr[rn];\n \tpreempt_enable();\n-\treturn copy_mem_out(u.b, ea, size);\n+\treturn copy_mem_out(&u.b[ea & 0xf], ea, size);\n }\n #endif /* CONFIG_ALTIVEC */\n \n@@ -1807,12 +1807,46 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,\n \t\t\tbreak;\n \n #ifdef CONFIG_ALTIVEC\n+\t\t/*\n+\t\t * Note: for the load/store vector element instructions,\n+\t\t * bits of the EA say which field of the VMX register to use.\n+\t\t */\n+\t\tcase 7:\t\t/* lvebx */\n+\t\t\top->type = MKOP(LOAD_VMX, 0, 1);\n+\t\t\top->element_size = 1;\n+\t\t\tbreak;\n+\n+\t\tcase 39:\t/* lvehx */\n+\t\t\top->type = MKOP(LOAD_VMX, 0, 2);\n+\t\t\top->element_size = 2;\n+\t\t\tbreak;\n+\n+\t\tcase 71:\t/* lvewx */\n+\t\t\top->type = MKOP(LOAD_VMX, 0, 4);\n+\t\t\top->element_size = 4;\n+\t\t\tbreak;\n+\n \t\tcase 103:\t/* lvx */\n \t\tcase 359:\t/* lvxl */\n \t\t\top->type = MKOP(LOAD_VMX, 0, 16);\n \t\t\top->element_size = 16;\n \t\t\tbreak;\n \n+\t\tcase 135:\t/* stvebx */\n+\t\t\top->type = MKOP(STORE_VMX, 0, 1);\n+\t\t\top->element_size = 1;\n+\t\t\tbreak;\n+\n+\t\tcase 167:\t/* stvehx */\n+\t\t\top->type = MKOP(STORE_VMX, 0, 2);\n+\t\t\top->element_size = 2;\n+\t\t\tbreak;\n+\n+\t\tcase 199:\t/* stvewx */\n+\t\t\top->type = MKOP(STORE_VMX, 0, 4);\n+\t\t\top->element_size = 4;\n+\t\t\tbreak;\n+\n \t\tcase 231:\t/* stvx */\n \t\tcase 487:\t/* stvxl */\n \t\t\top->type = MKOP(STORE_VMX, 0, 16);\n", "prefixes": [ "v3", "11/17" ] }