From mboxrd@z Thu Jan 1 00:00:00 1970 From: linuxram at us.ibm.com (Ram Pai) Date: Thu, 18 Jan 2018 17:50:26 -0800 Subject: [Linux-kselftest-mirror] [PATCH v10 05/27] powerpc: helper function to read, write AMR, IAMR, UAMOR registers In-Reply-To: <1516326648-22775-1-git-send-email-linuxram@us.ibm.com> References: <1516326648-22775-1-git-send-email-linuxram@us.ibm.com> Message-ID: <1516326648-22775-6-git-send-email-linuxram@us.ibm.com> Implements helper functions to read and write the key related registers; AMR, IAMR, UAMOR. AMR register tracks the read,write permission of a key IAMR register tracks the execute permission of a key UAMOR register enables and disables a key Acked-by: Balbir Singh Reviewed-by: Thiago Jung Bauermann Signed-off-by: Ram Pai --- arch/powerpc/mm/pkeys.c | 36 ++++++++++++++++++++++++++++++++++++ 1 files changed, 36 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/mm/pkeys.c b/arch/powerpc/mm/pkeys.c index e2f3992..6e8df6e 100644 --- a/arch/powerpc/mm/pkeys.c +++ b/arch/powerpc/mm/pkeys.c @@ -71,3 +71,39 @@ void pkey_mm_init(struct mm_struct *mm) return; mm_pkey_allocation_map(mm) = initial_allocation_mask; } + +static inline u64 read_amr(void) +{ + return mfspr(SPRN_AMR); +} + +static inline void write_amr(u64 value) +{ + mtspr(SPRN_AMR, value); +} + +static inline u64 read_iamr(void) +{ + if (!likely(pkey_execute_disable_supported)) + return 0x0UL; + + return mfspr(SPRN_IAMR); +} + +static inline void write_iamr(u64 value) +{ + if (!likely(pkey_execute_disable_supported)) + return; + + mtspr(SPRN_IAMR, value); +} + +static inline u64 read_uamor(void) +{ + return mfspr(SPRN_UAMOR); +} + +static inline void write_uamor(u64 value) +{ + mtspr(SPRN_UAMOR, value); +} -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: linuxram@us.ibm.com (Ram Pai) Date: Thu, 18 Jan 2018 17:50:26 -0800 Subject: [Linux-kselftest-mirror] [PATCH v10 05/27] powerpc: helper function to read, write AMR, IAMR, UAMOR registers In-Reply-To: <1516326648-22775-1-git-send-email-linuxram@us.ibm.com> References: <1516326648-22775-1-git-send-email-linuxram@us.ibm.com> Message-ID: <1516326648-22775-6-git-send-email-linuxram@us.ibm.com> Content-Type: text/plain; charset="UTF-8" Message-ID: <20180119015026.y1VoptZAWS9DyFoe7aKZTaYBM0kW0BkV2gScgDnpClo@z> Implements helper functions to read and write the key related registers; AMR, IAMR, UAMOR. AMR register tracks the read,write permission of a key IAMR register tracks the execute permission of a key UAMOR register enables and disables a key Acked-by: Balbir Singh Reviewed-by: Thiago Jung Bauermann Signed-off-by: Ram Pai --- arch/powerpc/mm/pkeys.c | 36 ++++++++++++++++++++++++++++++++++++ 1 files changed, 36 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/mm/pkeys.c b/arch/powerpc/mm/pkeys.c index e2f3992..6e8df6e 100644 --- a/arch/powerpc/mm/pkeys.c +++ b/arch/powerpc/mm/pkeys.c @@ -71,3 +71,39 @@ void pkey_mm_init(struct mm_struct *mm) return; mm_pkey_allocation_map(mm) = initial_allocation_mask; } + +static inline u64 read_amr(void) +{ + return mfspr(SPRN_AMR); +} + +static inline void write_amr(u64 value) +{ + mtspr(SPRN_AMR, value); +} + +static inline u64 read_iamr(void) +{ + if (!likely(pkey_execute_disable_supported)) + return 0x0UL; + + return mfspr(SPRN_IAMR); +} + +static inline void write_iamr(u64 value) +{ + if (!likely(pkey_execute_disable_supported)) + return; + + mtspr(SPRN_IAMR, value); +} + +static inline u64 read_uamor(void) +{ + return mfspr(SPRN_UAMOR); +} + +static inline void write_uamor(u64 value) +{ + mtspr(SPRN_UAMOR, value); +} -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html