diff options
Diffstat (limited to 'arch/arm64/kernel/traps.c')
| -rw-r--r-- | arch/arm64/kernel/traps.c | 33 |
1 files changed, 14 insertions, 19 deletions
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 29755989f616..ade32046f3fe 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -462,6 +462,9 @@ static void user_cache_maint_handler(unsigned int esr, struct pt_regs *regs) case ESR_ELx_SYS64_ISS_CRM_DC_CVAC: /* DC CVAC, gets promoted */ __user_cache_maint("dc civac", address, ret); break; + case ESR_ELx_SYS64_ISS_CRM_DC_CVADP: /* DC CVADP */ + __user_cache_maint("sys 3, c7, c13, 1", address, ret); + break; case ESR_ELx_SYS64_ISS_CRM_DC_CVAP: /* DC CVAP */ __user_cache_maint("sys 3, c7, c12, 1", address, ret); break; @@ -496,7 +499,7 @@ static void cntvct_read_handler(unsigned int esr, struct pt_regs *regs) { int rt = ESR_ELx_SYS64_ISS_RT(esr); - pt_regs_write_reg(regs, rt, arch_counter_get_cntvct()); + pt_regs_write_reg(regs, rt, arch_timer_read_counter()); arm64_skip_faulting_instruction(regs, AARCH64_INSN_SIZE); } @@ -668,7 +671,7 @@ static void compat_cntvct_read_handler(unsigned int esr, struct pt_regs *regs) { int rt = (esr & ESR_ELx_CP15_64_ISS_RT_MASK) >> ESR_ELx_CP15_64_ISS_RT_SHIFT; int rt2 = (esr & ESR_ELx_CP15_64_ISS_RT2_MASK) >> ESR_ELx_CP15_64_ISS_RT2_SHIFT; - u64 val = arch_counter_get_cntvct(); + u64 val = arch_timer_read_counter(); pt_regs_write_reg(regs, rt, lower_32_bits(val)); pt_regs_write_reg(regs, rt2, upper_32_bits(val)); @@ -950,9 +953,6 @@ int is_valid_bugaddr(unsigned long addr) static int bug_handler(struct pt_regs *regs, unsigned int esr) { - if (user_mode(regs)) - return DBG_HOOK_ERROR; - switch (report_bug(regs->pc, regs)) { case BUG_TRAP_TYPE_BUG: die("Oops - BUG", regs, 0); @@ -972,9 +972,8 @@ static int bug_handler(struct pt_regs *regs, unsigned int esr) } static struct break_hook bug_break_hook = { - .esr_val = 0xf2000000 | BUG_BRK_IMM, - .esr_mask = 0xffffffff, .fn = bug_handler, + .imm = BUG_BRK_IMM, }; #ifdef CONFIG_KASAN_SW_TAGS @@ -992,9 +991,6 @@ static int kasan_handler(struct pt_regs *regs, unsigned int esr) u64 addr = regs->regs[0]; u64 pc = regs->pc; - if (user_mode(regs)) - return DBG_HOOK_ERROR; - kasan_report(addr, size, write, pc); /* @@ -1019,13 +1015,10 @@ static int kasan_handler(struct pt_regs *regs, unsigned int esr) return DBG_HOOK_HANDLED; } -#define KASAN_ESR_VAL (0xf2000000 | KASAN_BRK_IMM) -#define KASAN_ESR_MASK 0xffffff00 - static struct break_hook kasan_break_hook = { - .esr_val = KASAN_ESR_VAL, - .esr_mask = KASAN_ESR_MASK, - .fn = kasan_handler, + .fn = kasan_handler, + .imm = KASAN_BRK_IMM, + .mask = KASAN_BRK_MASK, }; #endif @@ -1037,7 +1030,9 @@ int __init early_brk64(unsigned long addr, unsigned int esr, struct pt_regs *regs) { #ifdef CONFIG_KASAN_SW_TAGS - if ((esr & KASAN_ESR_MASK) == KASAN_ESR_VAL) + unsigned int comment = esr & ESR_ELx_BRK64_ISS_COMMENT_MASK; + + if ((comment & ~KASAN_BRK_MASK) == KASAN_BRK_IMM) return kasan_handler(regs, esr) != DBG_HOOK_HANDLED; #endif return bug_handler(regs, esr) != DBG_HOOK_HANDLED; @@ -1046,8 +1041,8 @@ int __init early_brk64(unsigned long addr, unsigned int esr, /* This registration must happen early, before debug_traps_init(). */ void __init trap_init(void) { - register_break_hook(&bug_break_hook); + register_kernel_break_hook(&bug_break_hook); #ifdef CONFIG_KASAN_SW_TAGS - register_break_hook(&kasan_break_hook); + register_kernel_break_hook(&kasan_break_hook); #endif } |