diff mbox series

[5/6] target/ppc: 440 optimise tlbwe TLB flushing

Message ID 20240117151238.93323-5-npiggin@gmail.com
State New
Headers show
Series [1/6] target/ppc: Fix 440 tlbwe TLB invalidation gaps | expand

Commit Message

Nicholas Piggin Jan. 17, 2024, 3:12 p.m. UTC 
Have 440 tlbwe flush only the range corresponding to the addresses
covered by the software TLB entry being modified rather than the
entire TLB. This matches what 4xx does.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 target/ppc/mmu_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Cédric Le Goater Jan. 25, 2024, 10:44 a.m. UTC | #1 
On 1/17/24 16:12, Nicholas Piggin wrote:
> Have 440 tlbwe flush only the range corresponding to the addresses
> covered by the software TLB entry being modified rather than the
> entire TLB. This matches what 4xx does.
> 
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>


Acked-by: Cédric Le Goater <clg@kaod.org>

Thanks,

C.


> ---
>   target/ppc/mmu_helper.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
> index 923779d052..ba965f1779 100644
> --- a/target/ppc/mmu_helper.c
> +++ b/target/ppc/mmu_helper.c
> @@ -864,7 +864,7 @@ void helper_440_tlbwe(CPUPPCState *env, uint32_t word, target_ulong entry,
>   
>       /* Invalidate previous TLB (if it's valid) */
>       if (tlb->prot & PAGE_VALID) {
> -        tlb_flush(env_cpu(env));
> +        ppcemb_tlb_flush(env_cpu(env), tlb);
>       }
>   
>       switch (word) {
diff mbox series

Patch

diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
index 923779d052..ba965f1779 100644
--- a/target/ppc/mmu_helper.c
+++ b/target/ppc/mmu_helper.c
@@ -864,7 +864,7 @@  void helper_440_tlbwe(CPUPPCState *env, uint32_t word, target_ulong entry,
 
     /* Invalidate previous TLB (if it's valid) */
     if (tlb->prot & PAGE_VALID) {
-        tlb_flush(env_cpu(env));
+        ppcemb_tlb_flush(env_cpu(env), tlb);
     }
 
     switch (word) {