arm64: Allow hw watchpoint of length 3,5,6 and 7
Since, arm64 can support all offset within a double word limit. Therefore, now support other lengths within that range as well. Signed-off-by: Pratyush Anand <panand@redhat.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
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@ -77,7 +77,11 @@ static inline void decode_ctrl_reg(u32 reg,
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/* Lengths */
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#define ARM_BREAKPOINT_LEN_1 0x1
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#define ARM_BREAKPOINT_LEN_2 0x3
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#define ARM_BREAKPOINT_LEN_3 0x7
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#define ARM_BREAKPOINT_LEN_4 0xf
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#define ARM_BREAKPOINT_LEN_5 0x1f
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#define ARM_BREAKPOINT_LEN_6 0x3f
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#define ARM_BREAKPOINT_LEN_7 0x7f
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#define ARM_BREAKPOINT_LEN_8 0xff
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/* Kernel stepping */
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@ -317,9 +317,21 @@ static int get_hbp_len(u8 hbp_len)
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case ARM_BREAKPOINT_LEN_2:
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len_in_bytes = 2;
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break;
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case ARM_BREAKPOINT_LEN_3:
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len_in_bytes = 3;
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break;
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case ARM_BREAKPOINT_LEN_4:
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len_in_bytes = 4;
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break;
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case ARM_BREAKPOINT_LEN_5:
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len_in_bytes = 5;
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break;
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case ARM_BREAKPOINT_LEN_6:
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len_in_bytes = 6;
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break;
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case ARM_BREAKPOINT_LEN_7:
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len_in_bytes = 7;
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break;
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case ARM_BREAKPOINT_LEN_8:
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len_in_bytes = 8;
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break;
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@ -381,9 +393,21 @@ int arch_bp_generic_fields(struct arch_hw_breakpoint_ctrl ctrl,
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case ARM_BREAKPOINT_LEN_2:
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*gen_len = HW_BREAKPOINT_LEN_2;
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break;
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case ARM_BREAKPOINT_LEN_3:
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*gen_len = HW_BREAKPOINT_LEN_3;
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break;
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case ARM_BREAKPOINT_LEN_4:
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*gen_len = HW_BREAKPOINT_LEN_4;
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break;
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case ARM_BREAKPOINT_LEN_5:
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*gen_len = HW_BREAKPOINT_LEN_5;
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break;
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case ARM_BREAKPOINT_LEN_6:
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*gen_len = HW_BREAKPOINT_LEN_6;
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break;
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case ARM_BREAKPOINT_LEN_7:
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*gen_len = HW_BREAKPOINT_LEN_7;
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break;
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case ARM_BREAKPOINT_LEN_8:
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*gen_len = HW_BREAKPOINT_LEN_8;
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break;
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@ -427,9 +451,21 @@ static int arch_build_bp_info(struct perf_event *bp)
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case HW_BREAKPOINT_LEN_2:
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info->ctrl.len = ARM_BREAKPOINT_LEN_2;
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break;
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case HW_BREAKPOINT_LEN_3:
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info->ctrl.len = ARM_BREAKPOINT_LEN_3;
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break;
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case HW_BREAKPOINT_LEN_4:
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info->ctrl.len = ARM_BREAKPOINT_LEN_4;
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break;
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case HW_BREAKPOINT_LEN_5:
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info->ctrl.len = ARM_BREAKPOINT_LEN_5;
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break;
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case HW_BREAKPOINT_LEN_6:
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info->ctrl.len = ARM_BREAKPOINT_LEN_6;
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break;
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case HW_BREAKPOINT_LEN_7:
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info->ctrl.len = ARM_BREAKPOINT_LEN_7;
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break;
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case HW_BREAKPOINT_LEN_8:
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info->ctrl.len = ARM_BREAKPOINT_LEN_8;
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break;
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