From patchwork Tue Jul 17 13:49:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ram Pai X-Patchwork-Id: 945096 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41VNmH59mHz9s0n for ; Wed, 18 Jul 2018 01:02:07 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=us.ibm.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="hrevH+P4"; 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 41VNmG711LzF3Hg for ; Wed, 18 Jul 2018 01:02:06 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=us.ibm.com 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="hrevH+P4"; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:400d:c09::243; helo=mail-qk0-x243.google.com; envelope-from=ram.n.pai@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=us.ibm.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="hrevH+P4"; dkim-atps=neutral Received: from mail-qk0-x243.google.com (mail-qk0-x243.google.com [IPv6:2607:f8b0:400d:c09::243]) (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 41VMB13q0nzF3Hl for ; Tue, 17 Jul 2018 23:50:49 +1000 (AEST) Received: by mail-qk0-x243.google.com with SMTP id u21-v6so516704qku.2 for ; Tue, 17 Jul 2018 06:50:49 -0700 (PDT) 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=T8r9Er3E5+y2jbEdCEqvWl9P/F0/Dx/IBruwlgp4gX4=; b=hrevH+P4nTlWXCrbADUYBhvh4uscoFVpMSQ2sZV8jb+axARfNezMeWv5iq9YWrLno/ KZpXsQnNGZ5THosR97rdEggkFG/yFR8SmIabdxfw/yRkLGhdFucOoweAy/u07oQnAyrQ 59LDg/14VBSCUNpxFlvP3g+wBMFUdBVT1p70vMaTCGTXyHRmfqz2rhE1Ty3TG23l10wF HIhoWhVEjc2NmOSo+oVeUzUHtHYXVnSiMYKKeOkOaxNEWydTGCILCeBU/cRynFauH4Md GwvuM18a6JWs5GjymqnU3fs/ut1aH2h4QL0qVS3plWhqtoAGF5/pmGMyve/VSAC/MDHF b+tg== 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=T8r9Er3E5+y2jbEdCEqvWl9P/F0/Dx/IBruwlgp4gX4=; b=X9VyGy4zHAenqqiRM12aZ/048tc7HuuBDBTeAj3NnKuMpahTqlX4ZDF1WvjpFQInjp 9EGnL44qRZEsVevMJvir0WtuPXBgqOMJoIjYTyNT5IIUZ5WlqXmv6rP0PuAueneUxQV4 v9JjX5h3hF+aiRULnGTHnhSTi08LJCLGiSB13PtlPATwkmc/TyRU099VKElX/mdW0LLQ zMWHg18UgG1to23NoWgYpOLHVi8zKNS564gJ9dptqEywK6ICuF+WFgphT1x+Qvet7zEm glMbAqoPbTSwrYDdMvGSXvcagiR/X8EpKh+Ye9yYheDLLWMyrwvZxl3Zf5Nr81/yJm3Z WESQ== X-Gm-Message-State: AOUpUlH9soWvy5MnlQyLOtmPNFcE6/rUHS8FpuLPEW93FWC//ix2R0nG SvqmTVeYveuCpuy9VzEPyhw= X-Google-Smtp-Source: AAOMgpcWAoOb/GbE9cqxxlAkIH7ozxXRcWZvAM00kQeDuxE2KmYVEHMNGymvUqipqDHCZFUmA+dv4Q== X-Received: by 2002:a37:5142:: with SMTP id f63-v6mr1443274qkb.369.1531835447614; Tue, 17 Jul 2018 06:50:47 -0700 (PDT) Received: from localhost.localdomain (50-39-100-161.bvtn.or.frontiernet.net. [50.39.100.161]) by smtp.gmail.com with ESMTPSA id s83-v6sm640937qki.20.2018.07.17.06.50.45 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 17 Jul 2018 06:50:47 -0700 (PDT) From: Ram Pai To: shuahkh@osg.samsung.com, linux-kselftest@vger.kernel.org Subject: [PATCH v14 21/22] selftests/vm: sub-page allocator Date: Tue, 17 Jul 2018 06:49:24 -0700 Message-Id: <1531835365-32387-22-git-send-email-linuxram@us.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1531835365-32387-1-git-send-email-linuxram@us.ibm.com> References: <1531835365-32387-1-git-send-email-linuxram@us.ibm.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, fweimer@redhat.com, dave.hansen@intel.com, x86@kernel.org, linuxram@us.ibm.com, mhocko@kernel.org, linux-mm@kvack.org, mingo@redhat.com, aneesh.kumar@linux.vnet.ibm.com, bauerman@linux.vnet.ibm.com, msuchanek@suse.de, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" introduce a new allocator that allocates 4k hardware-pages to back 64k linux-page. This allocator is only applicable on powerpc. cc: Dave Hansen cc: Florian Weimer Signed-off-by: Ram Pai Signed-off-by: Thiago Jung Bauermann --- tools/testing/selftests/vm/pkey-helpers.h | 6 ++++++ tools/testing/selftests/vm/pkey-powerpc.h | 25 +++++++++++++++++++++++++ tools/testing/selftests/vm/pkey-x86.h | 5 +++++ tools/testing/selftests/vm/protection_keys.c | 1 + 4 files changed, 37 insertions(+), 0 deletions(-) diff --git a/tools/testing/selftests/vm/pkey-helpers.h b/tools/testing/selftests/vm/pkey-helpers.h index 288ccff..a00eee6 100644 --- a/tools/testing/selftests/vm/pkey-helpers.h +++ b/tools/testing/selftests/vm/pkey-helpers.h @@ -28,6 +28,9 @@ extern int dprint_in_signal; extern char dprint_in_signal_buffer[DPRINT_IN_SIGNAL_BUF_SIZE]; +extern int test_nr; +extern int iteration_nr; + #ifdef __GNUC__ __attribute__((format(printf, 1, 2))) #endif @@ -78,6 +81,9 @@ static inline void sigsafe_printf(const char *format, ...) void expected_pkey_fault(int pkey); int sys_pkey_alloc(unsigned long flags, u64 init_val); int sys_pkey_free(unsigned long pkey); +int mprotect_pkey(void *ptr, size_t size, unsigned long orig_prot, + unsigned long pkey); +void record_pkey_malloc(void *ptr, long size, int prot); #if defined(__i386__) || defined(__x86_64__) /* arch */ #include "pkey-x86.h" diff --git a/tools/testing/selftests/vm/pkey-powerpc.h b/tools/testing/selftests/vm/pkey-powerpc.h index b649e85..ab60f74 100644 --- a/tools/testing/selftests/vm/pkey-powerpc.h +++ b/tools/testing/selftests/vm/pkey-powerpc.h @@ -100,4 +100,29 @@ void expect_fault_on_read_execonly_key(void *p1, int pkey) /* 8-bytes of instruction * 16384bytes = 1 page */ #define __page_o_noops() asm(".rept 16384 ; nop; .endr") +void *malloc_pkey_with_mprotect_subpage(long size, int prot, u16 pkey) +{ + 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, prot); + + dprintf1("%s() for pkey %d @ %p\n", __func__, pkey, ptr); + return ptr; +} + #endif /* _PKEYS_POWERPC_H */ diff --git a/tools/testing/selftests/vm/pkey-x86.h b/tools/testing/selftests/vm/pkey-x86.h index 887acf2..a7e4648 100644 --- a/tools/testing/selftests/vm/pkey-x86.h +++ b/tools/testing/selftests/vm/pkey-x86.h @@ -176,4 +176,9 @@ void expect_fault_on_read_execonly_key(void *p1, int pkey) expected_pkey_fault(pkey); } +void *malloc_pkey_with_mprotect_subpage(long size, int prot, u16 pkey) +{ + return PTR_ERR_ENOTSUP; +} + #endif /* _PKEYS_X86_H */ diff --git a/tools/testing/selftests/vm/protection_keys.c b/tools/testing/selftests/vm/protection_keys.c index ea3cf04..569faf1 100644 --- a/tools/testing/selftests/vm/protection_keys.c +++ b/tools/testing/selftests/vm/protection_keys.c @@ -883,6 +883,7 @@ 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: