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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-02-03 07:20:07 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-02-06 09:46:04 +0100 |
| commit | 98a5f361b8625c6f4841d6ba013bbf0e80d08147 (patch) | |
| tree | 4ed95efaf4243a91d9542e1431dca008df075d5e /arch/powerpc/kernel/setup_64.c | |
| parent | powerpc/64: Hard code cache geometry on POWER8 (diff) | |
| download | linux-98a5f361b8625c6f4841d6ba013bbf0e80d08147.tar.xz linux-98a5f361b8625c6f4841d6ba013bbf0e80d08147.zip | |
powerpc: Add new cache geometry aux vectors
This adds AUX vectors for the L1I,D, L2 and L3 cache levels
providing for each cache level the size of the cache in bytes
and the geometry (line size and number of ways).
We chose to not use the existing alpha/sh definition which
packs all the information in a single entry per cache level as
it is too restricted to represent some of the geometries used
on POWER.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/setup_64.c')
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 364fbffd7e83..b9855f1b290a 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -411,6 +411,11 @@ static void init_cache_info(struct ppc_cache_info *info, u32 size, u32 lsize, info->block_size = bsize; info->log_block_size = __ilog2(bsize); info->blocks_per_page = PAGE_SIZE / bsize; + + if (sets == 0) + info->assoc = 0xffff; + else + info->assoc = size / (sets * lsize); } static bool __init parse_cache_info(struct device_node *np, |