Message ID | 1509958663-18737-50-git-send-email-linuxram@us.ibm.com (mailing list archive) |
---|---|
State | Superseded |
Headers | show
Return-Path: <linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org> X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3yVqcC1JJFz9s7p for <patchwork-incoming@ozlabs.org>; Mon, 6 Nov 2017 22:10:51 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="t25s/5p/"; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 3yVqcC074HzDrKg for <patchwork-incoming@ozlabs.org>; Mon, 6 Nov 2017 22:10:51 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="t25s/5p/"; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:400d:c0d::244; helo=mail-qt0-x244.google.com; envelope-from=ram.n.pai@gmail.com; receiver=<UNKNOWN>) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="t25s/5p/"; dkim-atps=neutral Received: from mail-qt0-x244.google.com (mail-qt0-x244.google.com [IPv6:2607:f8b0:400d:c0d::244]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3yVmk216Y3zDrJn for <linuxppc-dev@lists.ozlabs.org>; Mon, 6 Nov 2017 20:00:41 +1100 (AEDT) Received: by mail-qt0-x244.google.com with SMTP id 8so10019326qtv.1 for <linuxppc-dev@lists.ozlabs.org>; Mon, 06 Nov 2017 01:00:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=55jjc4JBxDkFjLHU+c6h5UMRgXQ4dhHY8adg+GWI+JI=; b=t25s/5p/ASOLovVvjdKuuHEfF4VUaWASXk8oaHh97qTYi0G4QpSxfa7DMGmKhKEjLW UAoiD0FtPiMyV00INGGx0VavrjTP7W8mVsnkMoSYMHZZ9zM8/leIDog7wtzpPatggKTD k9pl14x0axy+UC40xtPnxNDV4r0gdBi3g2Lx1t5e5FF6j1NGrkK0GIQut8++TF9kb6NW GbHM7fha08A6aPPLdaznNqyhwoE8SbV7l4J5AOVx0TOBi7No9nvyFH6hl5ZHaDz1+v1W WC4n/qC4/1ZY9ETfZrgKzxMLbrKHYK88vplsH13PKq/7tY0L2+G8GoAQG2xOcWv78iEb GdQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=55jjc4JBxDkFjLHU+c6h5UMRgXQ4dhHY8adg+GWI+JI=; b=d5gV9z3lnaWduS5dt8WWjPMhs7yxoBKUDwTaisrYeaaiul3xCvA0cYePUvpbj7KbrC 2GgW4BubQC+A1t4NSheRqY8kCdKCgX85d+IV3OFeqeEbEHMqfYbQSyvU6H8fRoEyVwZ3 1q+wE9TGoR6bFmxhLSyFFKFEiywkwcaPIMfyEBfpSwOr0nziRvlbzwjKH/XlESfBZXY3 roghtou6ZX4u6tS0L3YROfN9bJUOhk8mRwgHXKAfSmvlV9h17hfcKFIqkKEZZHzAHgYO WMabqIRzWImwmv/hD8rqRruxxkRMrYyJ+AeLa4kw5gqd3kND/aBcRKmrJn1TM7e1eS1l Nf9w== X-Gm-Message-State: AMCzsaVusOWkEA71WSSNwLICh9p/rhwoaXmXppWQbvYQ+YtYagimxcYb 6lixihC7JQhdOr4fKoA9wVM= X-Google-Smtp-Source: ABhQp+QjWnugeL0WrXTSRLpaG2hPP2Ojp7PoMjtIjNDATS/ACYLl+5cRQzVooloX4ib6q7Sg68W+hQ== X-Received: by 10.237.55.102 with SMTP id i93mr22964335qtb.333.1509958839948; Mon, 06 Nov 2017 01:00:39 -0800 (PST) Received: from localhost.localdomain (50-39-103-96.bvtn.or.frontiernet.net. [50.39.103.96]) by smtp.gmail.com with ESMTPSA id r26sm8001094qki.42.2017.11.06.01.00.37 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 06 Nov 2017 01:00:39 -0800 (PST) From: Ram Pai <linuxram@us.ibm.com> To: mpe@ellerman.id.au, mingo@redhat.com, akpm@linux-foundation.org, corbet@lwn.net, arnd@arndb.de Subject: [PATCH v9 49/51] selftest/vm: sub-page allocator Date: Mon, 6 Nov 2017 00:57:41 -0800 Message-Id: <1509958663-18737-50-git-send-email-linuxram@us.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1509958663-18737-1-git-send-email-linuxram@us.ibm.com> References: <1509958663-18737-1-git-send-email-linuxram@us.ibm.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.24 Precedence: list List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>, <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>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe> Cc: linux-arch@vger.kernel.org, ebiederm@xmission.com, linux-doc@vger.kernel.org, x86@kernel.org, dave.hansen@intel.com, linux-kernel@vger.kernel.org, linuxram@us.ibm.com, mhocko@kernel.org, linux-mm@kvack.org, paulus@samba.org, aneesh.kumar@linux.vnet.ibm.com, linux-kselftest@vger.kernel.org, bauerman@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org, khandual@linux.vnet.ibm.com Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" <linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org> |
Series |
powerpc, mm: Memory Protection Keys
|
expand
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diff --git a/tools/testing/selftests/vm/protection_keys.c b/tools/testing/selftests/vm/protection_keys.c index c790bff..7b3649f 100644 --- a/tools/testing/selftests/vm/protection_keys.c +++ b/tools/testing/selftests/vm/protection_keys.c @@ -765,6 +765,35 @@ void free_pkey_malloc(void *ptr) return ptr; } +void *malloc_pkey_with_mprotect_subpage(long size, int prot, u16 pkey) +{ +#ifdef __powerpc64__ + void *ptr; + int ret; + + dprintf1("doing %s(size=%ld, prot=0x%x, pkey=%d)\n", __func__, + size, prot, pkey); + pkey_assert(pkey < NR_PKEYS); + ptr = mmap(NULL, size, prot, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); + pkey_assert(ptr != (void *)-1); + + ret = syscall(__NR_subpage_prot, ptr, size, NULL); + if (ret) { + perror("subpage_perm"); + return PTR_ERR_ENOTSUP; + } + + ret = mprotect_pkey((void *)ptr, PAGE_SIZE, prot, pkey); + pkey_assert(!ret); + record_pkey_malloc(ptr, size); + + dprintf1("%s() for pkey %d @ %p\n", __func__, pkey, ptr); + return ptr; +#else /* __powerpc64__ */ + return PTR_ERR_ENOTSUP; +#endif /* __powerpc64__ */ +} + void *malloc_pkey_anon_huge(long size, int prot, u16 pkey) { int ret; @@ -887,6 +916,7 @@ void setup_hugetlbfs(void) void *(*pkey_malloc[])(long size, int prot, u16 pkey) = { malloc_pkey_with_mprotect, + malloc_pkey_with_mprotect_subpage, malloc_pkey_anon_huge, malloc_pkey_hugetlb /* can not do direct with the pkey_mprotect() API:
introduce a new allocator that allocates 4k hardware-pages to back 64k linux-page. This allocator is only applicable on powerpc. Signed-off-by: Ram Pai <linuxram@us.ibm.com> --- tools/testing/selftests/vm/protection_keys.c | 30 ++++++++++++++++++++++++++ 1 files changed, 30 insertions(+), 0 deletions(-)