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path: root/drivers/misc/cxl/fault.c
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Diffstat (limited to 'drivers/misc/cxl/fault.c')
-rw-r--r--drivers/misc/cxl/fault.c30
1 files changed, 8 insertions, 22 deletions
diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c
index 69506ebd4d07..d0e97fd3d4c5 100644
--- a/drivers/misc/cxl/fault.c
+++ b/drivers/misc/cxl/fault.c
@@ -22,29 +22,19 @@
#include "cxl.h"
static struct cxl_sste* find_free_sste(struct cxl_sste *primary_group,
- bool sec_hash,
- struct cxl_sste *secondary_group,
unsigned int *lru)
{
- unsigned int i, entry;
+ unsigned int entry;
struct cxl_sste *sste, *group = primary_group;
- for (i = 0; i < 2; i++) {
- for (entry = 0; entry < 8; entry++) {
- sste = group + entry;
- if (!(be64_to_cpu(sste->esid_data) & SLB_ESID_V))
- return sste;
- }
- if (!sec_hash)
- break;
- group = secondary_group;
+ for (entry = 0; entry < 8; entry++) {
+ sste = group + entry;
+ if (!(be64_to_cpu(sste->esid_data) & SLB_ESID_V))
+ return sste;
}
/* Nothing free, select an entry to cast out */
- if (sec_hash && (*lru & 0x8))
- sste = secondary_group + (*lru & 0x7);
- else
- sste = primary_group + (*lru & 0x7);
- *lru = (*lru + 1) & 0xf;
+ sste = primary_group + *lru;
+ *lru = (*lru + 1) & 0x7;
return sste;
}
@@ -53,22 +43,18 @@ static void cxl_load_segment(struct cxl_context *ctx, struct copro_slb *slb)
{
/* mask is the group index, we search primary and secondary here. */
unsigned int mask = (ctx->sst_size >> 7)-1; /* SSTP0[SegTableSize] */
- bool sec_hash = 1;
struct cxl_sste *sste;
unsigned int hash;
unsigned long flags;
- sec_hash = !!(cxl_p1n_read(ctx->afu, CXL_PSL_SR_An) & CXL_PSL_SR_An_SC);
-
if (slb->vsid & SLB_VSID_B_1T)
hash = (slb->esid >> SID_SHIFT_1T) & mask;
else /* 256M */
hash = (slb->esid >> SID_SHIFT) & mask;
spin_lock_irqsave(&ctx->sste_lock, flags);
- sste = find_free_sste(ctx->sstp + (hash << 3), sec_hash,
- ctx->sstp + ((~hash & mask) << 3), &ctx->sst_lru);
+ sste = find_free_sste(ctx->sstp + (hash << 3), &ctx->sst_lru);
pr_devel("CXL Populating SST[%li]: %#llx %#llx\n",
sste - ctx->sstp, slb->vsid, slb->esid);