Allow EL0 or EL1 to access POR_EL0 without being trapped to EL2. Signed-off-by: Joey Gouly <joey.gouly@xxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: Will Deacon <will@xxxxxxxxxx> Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx> Reviewed-by: Anshuman Khandual <anshuman.khandual@xxxxxxx> --- arch/arm64/include/asm/el2_setup.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git arch/arm64/include/asm/el2_setup.h arch/arm64/include/asm/el2_setup.h index fd87c4b8f984..212191ecad40 100644 --- arch/arm64/include/asm/el2_setup.h +++ arch/arm64/include/asm/el2_setup.h @@ -185,12 +185,20 @@ .Lset_pie_fgt_\@: mrs_s x1, SYS_ID_AA64MMFR3_EL1 ubfx x1, x1, #ID_AA64MMFR3_EL1_S1PIE_SHIFT, #4 - cbz x1, .Lset_fgt_\@ + cbz x1, .Lset_poe_fgt_\@ /* Disable trapping of PIR_EL1 / PIRE0_EL1 */ orr x0, x0, #HFGxTR_EL2_nPIR_EL1 orr x0, x0, #HFGxTR_EL2_nPIRE0_EL1 +.Lset_poe_fgt_\@: + mrs_s x1, SYS_ID_AA64MMFR3_EL1 + ubfx x1, x1, #ID_AA64MMFR3_EL1_S1POE_SHIFT, #4 + cbz x1, .Lset_fgt_\@ + + /* Disable trapping of POR_EL0 */ + orr x0, x0, #HFGxTR_EL2_nPOR_EL0 + .Lset_fgt_\@: msr_s SYS_HFGRTR_EL2, x0 msr_s SYS_HFGWTR_EL2, x0 -- 2.25.1
