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migration: Pass incoming state into qemu_ufd_copy_ioctl() 

It'll be used in follow up patches to access more fields out of it.  Meanwhile
fetch the userfaultfd inside the function.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20201021212721.440373-2-peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
master
Peter Xu 2020-10-21 17:27:16 -04:00 committed by Dr. David Alan Gilbert
parent fe80c0241d
commit eef621c4e6
1 changed files with 5 additions and 3 deletions
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8
migration/postcopy-ram.c
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@ -1128,10 +1128,12 @@ int postcopy_ram_incoming_setup(MigrationIncomingState *mis)
return 0;
}
static int qemu_ufd_copy_ioctl(int userfault_fd, void *host_addr,
static int qemu_ufd_copy_ioctl(MigrationIncomingState *mis, void *host_addr,
void *from_addr, uint64_t pagesize, RAMBlock *rb)
{
int userfault_fd = mis->userfault_fd;
int ret;
if (from_addr) {
struct uffdio_copy copy_struct;
copy_struct.dst = (uint64_t)(uintptr_t)host_addr;
@ -1185,7 +1187,7 @@ int postcopy_place_page(MigrationIncomingState *mis, void *host, void *from,
* which would be slightly cheaper, but we'd have to be careful
* of the order of updating our page state.
*/
if (qemu_ufd_copy_ioctl(mis->userfault_fd, host, from, pagesize, rb)) {
if (qemu_ufd_copy_ioctl(mis, host, from, pagesize, rb)) {
int e = errno;
error_report("%s: %s copy host: %p from: %p (size: %zd)",
__func__, strerror(e), host, from, pagesize);
@ -1212,7 +1214,7 @@ int postcopy_place_page_zero(MigrationIncomingState *mis, void *host,
* but it's not available for everything (e.g. hugetlbpages)
*/
if (qemu_ram_is_uf_zeroable(rb)) {
if (qemu_ufd_copy_ioctl(mis->userfault_fd, host, NULL, pagesize, rb)) {
if (qemu_ufd_copy_ioctl(mis, host, NULL, pagesize, rb)) {
int e = errno;
error_report("%s: %s zero host: %p",
__func__, strerror(e), host);