diff options
| author | Atish Patra <[email protected]> | 2019-09-10 03:40:37 -0700 |
|---|---|---|
| committer | Anup Patel <[email protected]> | 2019-09-10 17:44:07 +0530 |
| commit | f2e82c3d797d9f64ec8f33365c35a2b5f7ea2bbb (patch) | |
| tree | 8158cfe4b94b96d97596108d0708bfbca6dee9e6 | |
| parent | 144acef6847663cdee8c64daaf2821ca13520656 (diff) | |
lib: Change tlb range flush threshold to 4k page instead of 1G
In RISC-V, tlb flush happens at a page granularity. That's why OpenSBI
also have a tlb range flush limit which decides the which tlb flush
requests should be upgraded to full flush to avoid long delays.
Currently, this is set to 1G which would result in a many sfence.vma
execution in a tight loop for a large range.
Change the threshold to 4k to speed things up.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
| -rw-r--r-- | include/sbi/sbi_tlb.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/sbi/sbi_tlb.h b/include/sbi/sbi_tlb.h index af77f893..cd52c12f 100644 --- a/include/sbi/sbi_tlb.h +++ b/include/sbi/sbi_tlb.h @@ -16,7 +16,7 @@ /* clang-format off */ #define SBI_TLB_FLUSH_ALL ((unsigned long)-1) -#define SBI_TLB_FLUSH_MAX_SIZE (1UL << 30) +#define SBI_TLB_FLUSH_MAX_SIZE (1UL << 12) /* clang-format on */ |