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mem: mark pages as not accessed when freeing memory

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Commit 8a4baf06c1 ("mem: mark pages as not accessed when reserving VA")
has mapped the initialized memory with PROT_NONE, and when it's unmapped,
eal_memalloc.c should remmap the anonymous memory with PROT_NONE too.

Fixes: 8a4baf06c1 ("mem: mark pages as not accessed when reserving VA")
Cc: stable@dpdk.org

Signed-off-by: Li Feng <fengli@smartx.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
This commit is contained in:
Li Feng 2020-04-24 18:42:05 +08:00 committed by David Marchand
parent a9aa14d9aa
commit 76e91e3f14
1 changed files with 1 additions and 1 deletions
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2
lib/librte_eal/linux/eal_memalloc.c
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@ -680,7 +680,7 @@ free_seg(struct rte_memseg *ms, struct hugepage_info *hi,
/* erase page data */ /* erase page data */
memset(ms->addr, 0, ms->len); memset(ms->addr, 0, ms->len);
if (mmap(ms->addr, ms->len, PROT_READ, if (mmap(ms->addr, ms->len, PROT_NONE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0) == MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0) ==
MAP_FAILED) { MAP_FAILED) {
RTE_LOG(DEBUG, EAL, "couldn't unmap page\n"); RTE_LOG(DEBUG, EAL, "couldn't unmap page\n");