From: Yicong Yang <yangyicong@hisilicon.com> driver inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IC1F41 ---------------------------------------------------------------------- 0x35 indicates IMPLEMENTATION DEFINED fault for Unsupported Exclusive or Atomic access. Add ESR_ELx_FSC definition and corresponding wrapper. Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Reviewed-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Hongye Lin <linhongye@h-partners.com> --- arch/arm64/include/asm/esr.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/include/asm/esr.h b/arch/arm64/include/asm/esr.h index 276eb39ed9a7..1def4e552d37 100644 --- a/arch/arm64/include/asm/esr.h +++ b/arch/arm64/include/asm/esr.h @@ -130,6 +130,7 @@ #define ESR_ELx_FSC_SECC_TTW1 (0x1d) #define ESR_ELx_FSC_SECC_TTW2 (0x1e) #define ESR_ELx_FSC_SECC_TTW3 (0x1f) +#define ESR_ELx_FSC_EXCL_ATOMIC (0x35) /* ISS field definitions for Data Aborts */ #define ESR_ELx_ISV_SHIFT (24) @@ -398,6 +399,13 @@ static inline bool esr_is_data_abort(unsigned long esr) return ec == ESR_ELx_EC_DABT_LOW || ec == ESR_ELx_EC_DABT_CUR; } +static inline bool esr_fsc_is_excl_atomic_fault(unsigned long esr) +{ + esr = esr & ESR_ELx_FSC; + + return esr == ESR_ELx_FSC_EXCL_ATOMIC; +} + const char *esr_get_class_string(unsigned long esr); #endif /* __ASSEMBLY */ -- 2.33.0