Re: [PATCH 03/23] accel/tcg: Split out tlbfast_{index,entry}

[Pierrick Bouvier <pierrick.bouvier@linaro.org>]

On 10/9/24 08:08, Richard Henderson wrote:
> Often we already have the CPUTLBDescFast structure pointer.
> Allows future code simplification.
> 
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   accel/tcg/cputlb.c | 16 ++++++++++++----
>   1 file changed, 12 insertions(+), 4 deletions(-)
> 
> diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c
> index c1838412e8..e37af24525 100644
> --- a/accel/tcg/cputlb.c
> +++ b/accel/tcg/cputlb.c
> @@ -131,20 +131,28 @@ static inline uint64_t tlb_addr_write(const CPUTLBEntry *entry)
>       return tlb_read_idx(entry, MMU_DATA_STORE);
>   }
>   
> +static inline uintptr_t tlbfast_index(CPUTLBDescFast *fast, vaddr addr)
> +{
> +    return (addr >> TARGET_PAGE_BITS) & (fast->mask >> CPU_TLB_ENTRY_BITS);
> +}
> +
> +static inline CPUTLBEntry *tlbfast_entry(CPUTLBDescFast *fast, vaddr addr)
> +{
> +    return fast->table + tlbfast_index(fast, addr);
> +}
> +
>   /* Find the TLB index corresponding to the mmu_idx + address pair.  */
>   static inline uintptr_t tlb_index(CPUState *cpu, uintptr_t mmu_idx,
>                                     vaddr addr)
>   {
> -    uintptr_t size_mask = cpu->neg.tlb.f[mmu_idx].mask >> CPU_TLB_ENTRY_BITS;
> -
> -    return (addr >> TARGET_PAGE_BITS) & size_mask;
> +    return tlbfast_index(&cpu->neg.tlb.f[mmu_idx], addr);
>   }
>   
>   /* Find the TLB entry corresponding to the mmu_idx + address pair.  */
>   static inline CPUTLBEntry *tlb_entry(CPUState *cpu, uintptr_t mmu_idx,
>                                        vaddr addr)
>   {
> -    return &cpu->neg.tlb.f[mmu_idx].table[tlb_index(cpu, mmu_idx, addr)];
> +    return tlbfast_entry(&cpu->neg.tlb.f[mmu_idx], addr);
>   }
>   
>   static void tlb_window_reset(CPUTLBDesc *desc, int64_t ns,

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>