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criu/pagemap-cache: pagescan: look for PAGE_IS_GUARD pages

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Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
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Alexander Mikhalitsyn 2025-04-06 20:51:24 +02:00 committed by Radostin Stoyanov
parent 66251ba1d9
commit 0852cf97ec
1 changed files with 3 additions and 0 deletions
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criu/pagemap-cache.c
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@ -194,6 +194,9 @@ int pmc_fill(pmc_t *pmc, u64 start, u64 end)
}; };
long ret; long ret;
if (kdat.has_pagemap_scan_guard_pages)
args.return_mask |= PAGE_IS_GUARD;
ret = ioctl(pmc->fd, PAGEMAP_SCAN, &args); ret = ioctl(pmc->fd, PAGEMAP_SCAN, &args);
if (ret == -1) { if (ret == -1) {
pr_perror("PAGEMAP_SCAN"); pr_perror("PAGEMAP_SCAN");