From 98ee15ca3adcf7bc22695897cd63a3ce8c5c53ff Mon Sep 17 00:00:00 2001
From: Atish Patra <atish.patra@wdc.com>
Date: Tue, 10 Sep 2019 03:40:38 -0700
Subject: lib: provide a platform specific tlb range flush threshold
Currently, the tlb range flush threshold is fixed and set to 4k for
all platforms. However, it should be platform specific as it completely
depends upon how platform actually implements sfence instruction.
Define a platform feature that allows every individual platform to set
different values. If a platform doesn't define it, just use a page size as
the threshold.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
---
platform/template/platform.c | 1 +
1 file changed, 1 insertion(+)
(limited to 'platform')
diff --git a/platform/template/platform.c b/platform/template/platform.c
index e123f3a..d36af48 100644
--- a/platform/template/platform.c
+++ b/platform/template/platform.c
@@ -224,5 +224,6 @@ const struct sbi_platform platform = {
.hart_count = 1,
.hart_stack_size = 4096,
.disabled_hart_mask = 0,
+ .tlb_range_flush_limit = 0,
.platform_ops_addr = (unsigned long)&platform_ops
};
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