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| author | Cédric Le Goater <clg@kaod.org> | 2021-08-04 12:51:24 +0530 |
|---|---|---|
| committer | Vasant Hegde <hegdevasant@linux.vnet.ibm.com> | 2021-08-06 12:29:19 +0530 |
| commit | 7f92751f688e364fd3f1e0b2f193ca0563f5c995 (patch) | |
| tree | e814037a35948bed266f2f81cc0eaf89409d18c1 | |
| parent | fd422c41941de527c019c30b779d826fdf43b036 (diff) | |
| download | skiboot-7f92751f688e364fd3f1e0b2f193ca0563f5c995.zip skiboot-7f92751f688e364fd3f1e0b2f193ca0563f5c995.tar.gz skiboot-7f92751f688e364fd3f1e0b2f193ca0563f5c995.tar.bz2 | |
xive/p10: Tune max_entries_in_modified when split_mode is on
This reduces the number of entries currently modified in the ESB cache.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
| -rw-r--r-- | hw/xive2.c | 1 | ||||
| -rw-r--r-- | include/xive2-regs.h | 1 |
2 files changed, 2 insertions, 0 deletions
@@ -1621,6 +1621,7 @@ static void xive_config_esb_cache(struct xive *x) if (xive_has_cap(x, CQ_XIVE_CAP_PHB_PQ_DISABLE)) { val |= VC_ESBC_CFG_SPLIT_MODE | VC_ESBC_CFG_HASH_ARRAY_ENABLE; + val = SETFIELD(VC_ESBC_CFG_MAX_ENTRIES_IN_MODIFIED, val, 0xE); xive_dbg(x, "ESB cache configured with split mode " "and hash array. VC_ESBC_CFG=%016llx\n", val); } else diff --git a/include/xive2-regs.h b/include/xive2-regs.h index c2ed265..1f7a3e7 100644 --- a/include/xive2-regs.h +++ b/include/xive2-regs.h @@ -233,6 +233,7 @@ #define VC_ESBC_CFG_HASH_ARRAY_ENABLE PPC_BIT(40) #define VC_ESBC_CFG_HASH_STORE_MODE PPC_BITMASK(41,42) #define VC_ESBC_CFG_SPLIT_MODE PPC_BIT(56) +#define VC_ESBC_CFG_MAX_ENTRIES_IN_MODIFIED PPC_BITMASK(59,63) /* EASC flush control register */ #define X_VC_EASC_FLUSH_CTRL 0x160 |