Messages in this thread Patch in this message | | | From | Andrea della Porta <> | Subject | [PATCH v2 2/4] arm64/process: Make loading of 32bit processes depend on aarch32_enabled() | Date | Mon, 23 Oct 2023 16:42:21 +0200 |
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Major aspect of Aarch32 support is the ability to load 32bit processes. That's currently decided (among others) by compat_elf_check_arch() and system_supports_32bit_el0().
Make the macro use aarch32_enabled() to decide if Aarch32 compat is enabled before loading a 32bit process.
Signed-off-by: Andrea della Porta <andrea.porta@suse.com> --- arch/arm64/include/asm/cpufeature.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 1180d68daaff..778f2f3b2c7d 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -679,8 +679,9 @@ static inline bool system_supports_32bit_el0(void) { u64 pfr0 = read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1); - return static_branch_unlikely(&arm64_mismatched_32bit_el0) || - id_aa64pfr0_32bit_el0(pfr0); + return (static_branch_unlikely(&arm64_mismatched_32bit_el0) || + id_aa64pfr0_32bit_el0(pfr0)) && + aarch32_enabled(); } static inline bool system_supports_4kb_granule(void) -- 2.35.3
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