diff options
Diffstat (limited to 'arch/arm64/kernel/mte.c')
| -rw-r--r-- | arch/arm64/kernel/mte.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/arm64/kernel/mte.c b/arch/arm64/kernel/mte.c index 36f51b0e438a..a5269558210c 100644 --- a/arch/arm64/kernel/mte.c +++ b/arch/arm64/kernel/mte.c @@ -195,7 +195,7 @@ void mte_check_tfsr_el1(void) static void set_gcr_el1_excl(u64 excl) { - current->thread.gcr_user_excl = excl; + current->thread.mte_ctrl = excl; /* * SYS_GCR_EL1 will be set to current->thread.gcr_user_excl value @@ -260,8 +260,8 @@ void mte_suspend_exit(void) long set_mte_ctrl(struct task_struct *task, unsigned long arg) { u64 sctlr = task->thread.sctlr_user & ~SCTLR_EL1_TCF0_MASK; - u64 gcr_excl = ~((arg & PR_MTE_TAG_MASK) >> PR_MTE_TAG_SHIFT) & - SYS_GCR_EL1_EXCL_MASK; + u64 mte_ctrl = (~((arg & PR_MTE_TAG_MASK) >> PR_MTE_TAG_SHIFT) & + SYS_GCR_EL1_EXCL_MASK) << MTE_CTRL_GCR_USER_EXCL_SHIFT; if (!system_supports_mte()) return 0; @@ -282,10 +282,10 @@ long set_mte_ctrl(struct task_struct *task, unsigned long arg) if (task != current) { task->thread.sctlr_user = sctlr; - task->thread.gcr_user_excl = gcr_excl; + task->thread.mte_ctrl = mte_ctrl; } else { set_task_sctlr_el1(sctlr); - set_gcr_el1_excl(gcr_excl); + set_gcr_el1_excl(mte_ctrl); } return 0; @@ -294,7 +294,9 @@ long set_mte_ctrl(struct task_struct *task, unsigned long arg) long get_mte_ctrl(struct task_struct *task) { unsigned long ret; - u64 incl = ~task->thread.gcr_user_excl & SYS_GCR_EL1_EXCL_MASK; + u64 mte_ctrl = task->thread.mte_ctrl; + u64 incl = (~mte_ctrl >> MTE_CTRL_GCR_USER_EXCL_SHIFT) & + SYS_GCR_EL1_EXCL_MASK; if (!system_supports_mte()) return 0; |