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lib: provide a platform specific tlb range flush threshold

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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>
This commit is contained in:
Atish Patra authored and Anup Patel committed 2019-09-10 17:44:10 +05:30
1 parent f2e82c3d79
commit 98ee15ca3a
4 files changed
+29 -4
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include/sbi/sbi_tlb.h
-1
View File
@@ -16,7 +16,6 @@
/* clang-format off */
#define SBI_TLB_FLUSH_ALL ((unsigned long)-1)
#define SBI_TLB_FLUSH_MAX_SIZE (1UL << 12)
/* clang-format on */