[PATCH v2 3/4] arm64/mm: Elide tlbi in contpte_convert() under BBML2
Mikołaj Lenczewski
miko.lenczewski at arm.com
Fri Feb 28 10:24:03 PST 2025
If we support bbml2 without conflict aborts, we can avoid the final
flush and have hardware manage the tlb entries for us. Avoiding flushes
is a win.
Signed-off-by: Mikołaj Lenczewski <miko.lenczewski at arm.com>
Reviewed-by: Ryan Roberts <ryan.roberts at arm.com>
---
arch/arm64/mm/contpte.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/arm64/mm/contpte.c b/arch/arm64/mm/contpte.c
index 145530f706a9..77ed03b30b72 100644
--- a/arch/arm64/mm/contpte.c
+++ b/arch/arm64/mm/contpte.c
@@ -72,9 +72,6 @@ static void contpte_convert(struct mm_struct *mm, unsigned long addr,
__flush_tlb_range(&vma, start_addr, addr, PAGE_SIZE, true, 3);
__set_ptes(mm, start_addr, start_ptep, pte, CONT_PTES);
-
- if (system_supports_bbml2_noabort())
- __flush_tlb_range(&vma, start_addr, addr, PAGE_SIZE, true, 3);
}
void __contpte_try_fold(struct mm_struct *mm, unsigned long addr,
--
2.45.3
More information about the linux-arm-kernel
mailing list