diff options
| -rw-r--r-- | arch/arm64/include/asm/mmu_context.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h index 0b3079fd28eb..70ce8c1d2b07 100644 --- a/arch/arm64/include/asm/mmu_context.h +++ b/arch/arm64/include/asm/mmu_context.h @@ -81,16 +81,15 @@ static inline bool __cpu_uses_extended_idmap_level(void) } /* - * Set TCR.T0SZ to its default value (based on VA_BITS) + * Ensure TCR.T0SZ is set to the provided value. */ static inline void __cpu_set_tcr_t0sz(unsigned long t0sz) { - unsigned long tcr; + unsigned long tcr = read_sysreg(tcr_el1); - if (!__cpu_uses_extended_idmap()) + if ((tcr & TCR_T0SZ_MASK) >> TCR_T0SZ_OFFSET == t0sz) return; - tcr = read_sysreg(tcr_el1); tcr &= ~TCR_T0SZ_MASK; tcr |= t0sz << TCR_T0SZ_OFFSET; write_sysreg(tcr, tcr_el1); |