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fix usage of DIRTY_LOG for guests greater/equal IO GAP (#91)

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This commit is contained in:
Simon Pickartz 2018-05-17 14:38:23 +02:00 • committed by Stefan Lankes
parent 020339c32a
commit b5d5c0a3bb
1 changed files with 3 additions and 1 deletions
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4
tools/uhyve-x86_64.c
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@ -594,6 +594,7 @@ void write_cpu_state(void)
void scan_dirty_log(void (*save_page)(void*, size_t, void*, size_t))
{
size_t slot_offset = 0;
static struct kvm_dirty_log dlog = {
.slot = 0,
.dirty_bitmap = NULL
@ -623,7 +624,7 @@ nextslot:
size_t test = 1ULL << j;
if ((value & test) == test) {
size_t addr = (i*sizeof(size_t)*8+j)*PAGE_SIZE;
size_t addr = (i*sizeof(size_t)*8+j)*PAGE_SIZE + slot_offset;
save_page(&addr, sizeof(size_t), (void*)((uint64_t)guest_mem+(uint64_t)addr), PAGE_SIZE);
}
@ -633,6 +634,7 @@ nextslot:
// do we have to check the second slot?
if ((dlog.slot == 0) && (guest_size > KVM_32BIT_GAP_START - GUEST_OFFSET)) {
slot_offset = KVM_32BIT_MAX_MEM_SIZE;
dlog.slot = 1;
memset(dlog.dirty_bitmap, 0x00, dirty_log_size * sizeof(size_t));
goto nextslot;