diff options
| -rw-r--r-- | migration/postcopy-ram.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/migration/postcopy-ram.c b/migration/postcopy-ram.c index effbeb64fb..dc80dbb67f 100644 --- a/migration/postcopy-ram.c +++ b/migration/postcopy-ram.c @@ -95,6 +95,19 @@ static bool ufd_version_check(int ufd) return true; } +/* Callback from postcopy_ram_supported_by_host block iterator. + */ +static int test_range_shared(const char *block_name, void *host_addr, + ram_addr_t offset, ram_addr_t length, void *opaque) +{ + if (qemu_ram_is_shared(qemu_ram_block_by_name(block_name))) { + error_report("Postcopy on shared RAM (%s) is not yet supported", + block_name); + return 1; + } + return 0; +} + /* * Note: This has the side effect of munlock'ing all of RAM, that's * normally fine since if the postcopy succeeds it gets turned back on at the @@ -127,6 +140,11 @@ bool postcopy_ram_supported_by_host(void) goto out; } + /* We don't support postcopy with shared RAM yet */ + if (qemu_ram_foreach_block(test_range_shared, NULL)) { + goto out; + } + /* * userfault and mlock don't go together; we'll put it back later if * it was enabled. |