From: Sandipan Das <sandipan@linux.ibm.com> To: shuahkh@osg.samsung.com, linux-kselftest@vger.kernel.org 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.ibm.com, bauerman@linux.ibm.com, msuchanek@suse.de, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v15 12/23] selftests/vm/pkeys: Introduce generic pkey abstractions Date: Wed, 18 Dec 2019 13:21:45 +0530 [thread overview] Message-ID: <e0d421c178c3c4694b808d99003dfbaae6b45996.1576645161.git.sandipan@linux.ibm.com> (raw) In-Reply-To: <cover.1576645161.git.sandipan@linux.ibm.com> In-Reply-To: <cover.1576645161.git.sandipan@linux.ibm.com> From: Ram Pai <linuxram@us.ibm.com> This introduces some generic abstractions and provides the corresponding architecture-specfic implementations for these abstractions. cc: Dave Hansen <dave.hansen@intel.com> cc: Florian Weimer <fweimer@redhat.com> Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> --- tools/testing/selftests/vm/pkey-helpers.h | 12 ++++++++++++ tools/testing/selftests/vm/pkey-x86.h | 15 +++++++++++++++ tools/testing/selftests/vm/protection_keys.c | 8 ++------ 3 files changed, 29 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/vm/pkey-helpers.h b/tools/testing/selftests/vm/pkey-helpers.h index bd90a49a3229..c929cc09b3cc 100644 --- a/tools/testing/selftests/vm/pkey-helpers.h +++ b/tools/testing/selftests/vm/pkey-helpers.h @@ -74,6 +74,9 @@ extern void abort_hooks(void); } \ } while (0) +__attribute__((noinline)) int read_ptr(int *ptr); +void expected_pkey_fault(int pkey); + #if defined(__i386__) || defined(__x86_64__) /* arch */ #include "pkey-x86.h" #else /* arch */ @@ -173,4 +176,13 @@ static inline void __pkey_write_allow(int pkey, int do_allow_write) #define __stringify_1(x...) #x #define __stringify(x...) __stringify_1(x) +static inline u32 *siginfo_get_pkey_ptr(siginfo_t *si) +{ +#ifdef si_pkey + return &si->si_pkey; +#else + return (u32 *)(((u8 *)si) + si_pkey_offset); +#endif +} + #endif /* _PKEYS_HELPER_H */ diff --git a/tools/testing/selftests/vm/pkey-x86.h b/tools/testing/selftests/vm/pkey-x86.h index 4937f48f77cc..bb2d4dfcacd5 100644 --- a/tools/testing/selftests/vm/pkey-x86.h +++ b/tools/testing/selftests/vm/pkey-x86.h @@ -42,6 +42,7 @@ #endif #define NR_PKEYS 16 +#define NR_RESERVED_PKEYS 2 /* pkey-0 and exec-only-pkey */ #define PKEY_BITS_PER_PKEY 2 #define HPAGE_SIZE (1UL<<21) #define PAGE_SIZE 4096 @@ -160,4 +161,18 @@ int pkey_reg_xstate_offset(void) return xstate_offset; } +static inline int get_arch_reserved_keys(void) +{ + return NR_RESERVED_PKEYS; +} + +void expect_fault_on_read_execonly_key(void *p1, int pkey) +{ + int ptr_contents; + + ptr_contents = read_ptr(p1); + dprintf2("ptr (%p) contents@%d: %x\n", p1, __LINE__, ptr_contents); + expected_pkey_fault(pkey); +} + #endif /* _PKEYS_X86_H */ diff --git a/tools/testing/selftests/vm/protection_keys.c b/tools/testing/selftests/vm/protection_keys.c index 2327cfa0b836..dbc2918bec13 100644 --- a/tools/testing/selftests/vm/protection_keys.c +++ b/tools/testing/selftests/vm/protection_keys.c @@ -1306,9 +1306,7 @@ void test_executing_on_unreadable_memory(int *ptr, u16 pkey) madvise(p1, PAGE_SIZE, MADV_DONTNEED); lots_o_noops_around_write(&scratch); do_not_expect_pkey_fault("executing on PROT_EXEC memory"); - ptr_contents = read_ptr(p1); - dprintf2("ptr (%p) contents@%d: %x\n", p1, __LINE__, ptr_contents); - expected_pkey_fault(pkey); + expect_fault_on_read_execonly_key(p1, pkey); } void test_implicit_mprotect_exec_only_memory(int *ptr, u16 pkey) @@ -1335,9 +1333,7 @@ void test_implicit_mprotect_exec_only_memory(int *ptr, u16 pkey) madvise(p1, PAGE_SIZE, MADV_DONTNEED); lots_o_noops_around_write(&scratch); do_not_expect_pkey_fault("executing on PROT_EXEC memory"); - ptr_contents = read_ptr(p1); - dprintf2("ptr (%p) contents@%d: %x\n", p1, __LINE__, ptr_contents); - expected_pkey_fault(UNKNOWN_PKEY); + expect_fault_on_read_execonly_key(p1, UNKNOWN_PKEY); /* * Put the memory back to non-PROT_EXEC. Should clear the -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Sandipan Das <sandipan@linux.ibm.com> To: shuahkh@osg.samsung.com, linux-kselftest@vger.kernel.org Cc: linux-arch@vger.kernel.org, fweimer@redhat.com, linux-mm@kvack.org, aneesh.kumar@linux.ibm.com, x86@kernel.org, linuxram@us.ibm.com, mhocko@kernel.org, dave.hansen@intel.com, mingo@redhat.com, msuchanek@suse.de, linuxppc-dev@lists.ozlabs.org, bauerman@linux.ibm.com Subject: [PATCH v15 12/23] selftests/vm/pkeys: Introduce generic pkey abstractions Date: Wed, 18 Dec 2019 13:21:45 +0530 [thread overview] Message-ID: <e0d421c178c3c4694b808d99003dfbaae6b45996.1576645161.git.sandipan@linux.ibm.com> (raw) In-Reply-To: <cover.1576645161.git.sandipan@linux.ibm.com> In-Reply-To: <cover.1576645161.git.sandipan@linux.ibm.com> From: Ram Pai <linuxram@us.ibm.com> This introduces some generic abstractions and provides the corresponding architecture-specfic implementations for these abstractions. cc: Dave Hansen <dave.hansen@intel.com> cc: Florian Weimer <fweimer@redhat.com> Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> --- tools/testing/selftests/vm/pkey-helpers.h | 12 ++++++++++++ tools/testing/selftests/vm/pkey-x86.h | 15 +++++++++++++++ tools/testing/selftests/vm/protection_keys.c | 8 ++------ 3 files changed, 29 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/vm/pkey-helpers.h b/tools/testing/selftests/vm/pkey-helpers.h index bd90a49a3229..c929cc09b3cc 100644 --- a/tools/testing/selftests/vm/pkey-helpers.h +++ b/tools/testing/selftests/vm/pkey-helpers.h @@ -74,6 +74,9 @@ extern void abort_hooks(void); } \ } while (0) +__attribute__((noinline)) int read_ptr(int *ptr); +void expected_pkey_fault(int pkey); + #if defined(__i386__) || defined(__x86_64__) /* arch */ #include "pkey-x86.h" #else /* arch */ @@ -173,4 +176,13 @@ static inline void __pkey_write_allow(int pkey, int do_allow_write) #define __stringify_1(x...) #x #define __stringify(x...) __stringify_1(x) +static inline u32 *siginfo_get_pkey_ptr(siginfo_t *si) +{ +#ifdef si_pkey + return &si->si_pkey; +#else + return (u32 *)(((u8 *)si) + si_pkey_offset); +#endif +} + #endif /* _PKEYS_HELPER_H */ diff --git a/tools/testing/selftests/vm/pkey-x86.h b/tools/testing/selftests/vm/pkey-x86.h index 4937f48f77cc..bb2d4dfcacd5 100644 --- a/tools/testing/selftests/vm/pkey-x86.h +++ b/tools/testing/selftests/vm/pkey-x86.h @@ -42,6 +42,7 @@ #endif #define NR_PKEYS 16 +#define NR_RESERVED_PKEYS 2 /* pkey-0 and exec-only-pkey */ #define PKEY_BITS_PER_PKEY 2 #define HPAGE_SIZE (1UL<<21) #define PAGE_SIZE 4096 @@ -160,4 +161,18 @@ int pkey_reg_xstate_offset(void) return xstate_offset; } +static inline int get_arch_reserved_keys(void) +{ + return NR_RESERVED_PKEYS; +} + +void expect_fault_on_read_execonly_key(void *p1, int pkey) +{ + int ptr_contents; + + ptr_contents = read_ptr(p1); + dprintf2("ptr (%p) contents@%d: %x\n", p1, __LINE__, ptr_contents); + expected_pkey_fault(pkey); +} + #endif /* _PKEYS_X86_H */ diff --git a/tools/testing/selftests/vm/protection_keys.c b/tools/testing/selftests/vm/protection_keys.c index 2327cfa0b836..dbc2918bec13 100644 --- a/tools/testing/selftests/vm/protection_keys.c +++ b/tools/testing/selftests/vm/protection_keys.c @@ -1306,9 +1306,7 @@ void test_executing_on_unreadable_memory(int *ptr, u16 pkey) madvise(p1, PAGE_SIZE, MADV_DONTNEED); lots_o_noops_around_write(&scratch); do_not_expect_pkey_fault("executing on PROT_EXEC memory"); - ptr_contents = read_ptr(p1); - dprintf2("ptr (%p) contents@%d: %x\n", p1, __LINE__, ptr_contents); - expected_pkey_fault(pkey); + expect_fault_on_read_execonly_key(p1, pkey); } void test_implicit_mprotect_exec_only_memory(int *ptr, u16 pkey) @@ -1335,9 +1333,7 @@ void test_implicit_mprotect_exec_only_memory(int *ptr, u16 pkey) madvise(p1, PAGE_SIZE, MADV_DONTNEED); lots_o_noops_around_write(&scratch); do_not_expect_pkey_fault("executing on PROT_EXEC memory"); - ptr_contents = read_ptr(p1); - dprintf2("ptr (%p) contents@%d: %x\n", p1, __LINE__, ptr_contents); - expected_pkey_fault(UNKNOWN_PKEY); + expect_fault_on_read_execonly_key(p1, UNKNOWN_PKEY); /* * Put the memory back to non-PROT_EXEC. Should clear the -- 2.17.1
next prev parent reply other threads:[~2019-12-18 7:52 UTC|newest] Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-12-18 7:51 [PATCH v15 00/24] selftests, powerpc, x86: Memory Protection Keys Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 01/23] selftests/x86/pkeys: Move selftests to arch-neutral directory Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 02/23] selftests/vm/pkeys: Rename all references to pkru to a generic name Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 03/23] selftests/vm/pkeys: Move generic definitions to header file Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 04/23] selftests/vm/pkeys: Move some definitions to arch-specific header Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 05/23] selftests/vm/pkeys: Make gcc check arguments of sigsafe_printf() Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 06/23] selftests/vm/pkeys: Typecast the pkey register Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 20:46 ` Dave Hansen 2019-12-18 20:46 ` Dave Hansen 2019-12-18 20:59 ` Michal Suchánek 2019-12-18 20:59 ` Michal Suchánek 2019-12-18 21:01 ` Dave Hansen 2019-12-18 21:01 ` Dave Hansen 2019-12-18 21:45 ` Michal Suchánek 2019-12-18 21:45 ` Michal Suchánek 2019-12-19 11:39 ` Michael Ellerman 2019-12-18 7:51 ` [PATCH v15 07/23] selftests: vm: pkeys: Add helpers for pkey bits Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 08/23] selftests/vm/pkeys: Fix pkey_disable_clear() Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 09/23] selftests/vm/pkeys: Fix assertion in pkey_disable_set/clear() Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 10/23] selftests/vm/pkeys: Fix alloc_random_pkey() to make it really random Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 11/23] selftests: vm: pkeys: Use the correct huge page size Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` Sandipan Das [this message] 2019-12-18 7:51 ` [PATCH v15 12/23] selftests/vm/pkeys: Introduce generic pkey abstractions Sandipan Das 2019-12-18 7:51 ` [PATCH v15 13/23] selftests/vm/pkeys: Introduce powerpc support Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 14/23] selftests/vm/pkeys: Fix assertion in test_pkey_alloc_exhaust() Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2020-01-15 7:30 ` Michael Ellerman 2020-01-15 7:30 ` Michael Ellerman 2019-12-18 7:51 ` [PATCH v15 15/23] selftests/vm/pkeys: Improve checks to determine pkey support Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 16/23] selftests/vm/pkeys: Associate key on a mapped page and detect access violation Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 17/23] selftests/vm/pkeys: Associate key on a mapped page and detect write violation Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 18/23] selftests/vm/pkeys: Detect write violation on a mapped access-denied-key page Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 19/23] selftests/vm/pkeys: Introduce a sub-page allocator Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 20/23] selftests/vm/pkeys: Test correct behaviour of pkey-0 Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 21/23] selftests/vm/pkeys: Fix number of reserved powerpc pkeys Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 22/23] selftests/vm/pkeys: Override access right definitions on powerpc Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2019-12-18 7:51 ` [PATCH v15 23/23] selftests: vm: pkeys: Use the correct page size " Sandipan Das 2019-12-18 7:51 ` Sandipan Das 2020-01-15 7:07 ` Michael Ellerman 2020-01-15 7:07 ` Michael Ellerman 2020-01-16 8:33 ` Sandipan Das 2020-01-16 8:33 ` Sandipan Das 2019-12-18 20:48 ` [PATCH v15 00/24] selftests, powerpc, x86: Memory Protection Keys Dave Hansen 2019-12-18 20:48 ` Dave Hansen 2020-01-10 17:38 ` Aneesh Kumar K.V 2020-01-10 17:38 ` Aneesh Kumar K.V 2020-01-10 17:57 ` Dave Hansen 2020-01-10 17:57 ` Dave Hansen 2020-01-11 16:50 ` Sandipan Das 2020-01-11 16:50 ` Sandipan Das
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=e0d421c178c3c4694b808d99003dfbaae6b45996.1576645161.git.sandipan@linux.ibm.com \ --to=sandipan@linux.ibm.com \ --cc=aneesh.kumar@linux.ibm.com \ --cc=bauerman@linux.ibm.com \ --cc=dave.hansen@intel.com \ --cc=fweimer@redhat.com \ --cc=linux-arch@vger.kernel.org \ --cc=linux-kselftest@vger.kernel.org \ --cc=linux-mm@kvack.org \ --cc=linuxppc-dev@lists.ozlabs.org \ --cc=linuxram@us.ibm.com \ --cc=mhocko@kernel.org \ --cc=mingo@redhat.com \ --cc=msuchanek@suse.de \ --cc=shuahkh@osg.samsung.com \ --cc=x86@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.