diff options
| -rw-r--r-- | arch/arm64/include/asm/assembler.h | 6 | ||||
| -rw-r--r-- | arch/arm64/kernel/entry.S | 12 |
2 files changed, 10 insertions, 8 deletions
diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index 8bc63fc98752..1886b8b44672 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -49,6 +49,12 @@ msr daif, \flags .endm + /* Only on aarch64 pstate, PSR_D_BIT is different for aarch32 */ + .macro inherit_daif, pstate:req, tmp:req + and \tmp, \pstate, #(PSR_D_BIT | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT) + msr daif, \tmp + .endm + /* * Enable and disable interrupts. */ diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index eff4a07c7ad7..72fc5969607f 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -510,11 +510,7 @@ el1_da: * Data abort handling */ mrs x3, far_el1 - enable_dbg - // re-enable interrupts if they were enabled in the aborted context - tbnz x23, #7, 1f // PSR_I_BIT - enable_irq -1: + inherit_daif pstate=x23, tmp=x2 clear_address_tag x0, x3 mov x2, sp // struct pt_regs bl do_mem_abort @@ -525,7 +521,7 @@ el1_sp_pc: * Stack or PC alignment exception handling */ mrs x0, far_el1 - enable_dbg + inherit_daif pstate=x23, tmp=x2 mov x2, sp bl do_sp_pc_abort ASM_BUG() @@ -533,7 +529,7 @@ el1_undef: /* * Undefined instruction */ - enable_dbg + inherit_daif pstate=x23, tmp=x2 mov x0, sp bl do_undefinstr ASM_BUG() @@ -550,7 +546,7 @@ el1_dbg: kernel_exit 1 el1_inv: // TODO: add support for undefined instructions in kernel mode - enable_dbg + inherit_daif pstate=x23, tmp=x2 mov x0, sp mov x2, x1 mov x1, #BAD_SYNC |