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only for incremental checkpoints a reset of the dirty flag is required

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This commit is contained in:
Stefan Lankes 2017-05-14 01:51:16 +02:00
parent c5de9dac99
commit d39d8e9f3a
1 changed files with 4 additions and 2 deletions
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6
tools/uhyve.c
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@ -1331,7 +1331,8 @@ nextslot:
for(size_t l=0; l<(1 << PAGE_MAP_BITS); l++) { for(size_t l=0; l<(1 << PAGE_MAP_BITS); l++) {
if ((pgt[l] & (PG_PRESENT|flag)) == (PG_PRESENT|flag)) { if ((pgt[l] & (PG_PRESENT|flag)) == (PG_PRESENT|flag)) {
//printf("\t\t\t*pgt[%zd] 0x%zx, 4KB\n", l, pgt[l] & ~PG_XD); //printf("\t\t\t*pgt[%zd] 0x%zx, 4KB\n", l, pgt[l] & ~PG_XD);
pgt[l] = pgt[l] & ~(PG_DIRTY|PG_ACCESSED); if (!full_checkpoint)
pgt[l] = pgt[l] & ~(PG_DIRTY|PG_ACCESSED);
size_t pgt_entry = pgt[l] & ~PG_PSE; // because PAT use the same bit as PSE size_t pgt_entry = pgt[l] & ~PG_PSE; // because PAT use the same bit as PSE
if (fwrite(&pgt_entry, sizeof(size_t), 1, f) != 1) if (fwrite(&pgt_entry, sizeof(size_t), 1, f) != 1)
err(1, "fwrite failed"); err(1, "fwrite failed");
@ -1341,7 +1342,8 @@ nextslot:
} }
} else if ((pgd[k] & flag) == flag) { } else if ((pgd[k] & flag) == flag) {
//printf("\t\t*pgd[%zd] 0x%zx, 2MB\n", k, pgd[k] & ~PG_XD); //printf("\t\t*pgd[%zd] 0x%zx, 2MB\n", k, pgd[k] & ~PG_XD);
pgd[k] = pgd[k] & ~(PG_DIRTY|PG_ACCESSED); if (!full_checkpoint)
pgd[k] = pgd[k] & ~(PG_DIRTY|PG_ACCESSED);
if (fwrite(pgd+k, sizeof(size_t), 1, f) != 1) if (fwrite(pgd+k, sizeof(size_t), 1, f) != 1)
err(1, "fwrite failed"); err(1, "fwrite failed");
if (fwrite((size_t*) (guest_mem + (pgd[k] & PAGE_2M_MASK)), (1UL << PAGE_2M_BITS), 1, f) != 1) if (fwrite((size_t*) (guest_mem + (pgd[k] & PAGE_2M_MASK)), (1UL << PAGE_2M_BITS), 1, f) != 1)