diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/arch_timer.h | 9 | ||||
| -rw-r--r-- | arch/arm64/include/asm/arch_timer.h | 12 |
2 files changed, 15 insertions, 6 deletions
diff --git a/arch/arm/include/asm/arch_timer.h b/arch/arm/include/asm/arch_timer.h index 5665134bfa3e..d57e04de8e8c 100644 --- a/arch/arm/include/asm/arch_timer.h +++ b/arch/arm/include/asm/arch_timer.h @@ -93,8 +93,13 @@ static inline void arch_counter_set_user_access(void) asm volatile("mrc p15, 0, %0, c14, c1, 0" : "=r" (cntkctl)); - /* disable user access to everything */ - cntkctl &= ~((3 << 8) | (7 << 0)); + /* Disable user access to both physical/virtual counters/timers */ + /* Also disable virtual event stream */ + cntkctl &= ~(ARCH_TIMER_USR_PT_ACCESS_EN + | ARCH_TIMER_USR_VT_ACCESS_EN + | ARCH_TIMER_VIRT_EVT_EN + | ARCH_TIMER_USR_VCT_ACCESS_EN + | ARCH_TIMER_USR_PCT_ACCESS_EN); asm volatile("mcr p15, 0, %0, c14, c1, 0" : : "r" (cntkctl)); } diff --git a/arch/arm64/include/asm/arch_timer.h b/arch/arm64/include/asm/arch_timer.h index c9f1d2816c2b..2b9722f42729 100644 --- a/arch/arm64/include/asm/arch_timer.h +++ b/arch/arm64/include/asm/arch_timer.h @@ -96,12 +96,16 @@ static inline void arch_counter_set_user_access(void) { u32 cntkctl; - /* Disable user access to the timers and the physical counter. */ asm volatile("mrs %0, cntkctl_el1" : "=r" (cntkctl)); - cntkctl &= ~((3 << 8) | (1 << 0)); - /* Enable user access to the virtual counter and frequency. */ - cntkctl |= (1 << 1); + /* Disable user access to the timers and the physical counter */ + cntkctl &= ~(ARCH_TIMER_USR_PT_ACCESS_EN + | ARCH_TIMER_USR_VT_ACCESS_EN + | ARCH_TIMER_USR_PCT_ACCESS_EN); + + /* Enable user access to the virtual counter */ + cntkctl |= ARCH_TIMER_USR_VCT_ACCESS_EN; + asm volatile("msr cntkctl_el1, %0" : : "r" (cntkctl)); } |