[PATCH v1 06/17] target/i386: sev: Use ram_block_discard_set_broken()

David Hildenbrand
2020-05-06T09:50:39Z

AMD SEV will pin all guest memory, mark discarding of RAM broken. At the
time this is called, we cannot have anyone active that relies on discards
to work properly.

Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
target/i386/sev.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/target/i386/sev.c b/target/i386/sev.c
index 846018a12d..608225f9ba 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -722,6 +722,7 @@ sev_guest_init(const char *id)
ram_block_notifier_add(&sev_ram_notifier);
qemu_add_machine_init_done_notifier(&sev_machine_done_notify);
qemu_add_vm_change_state_handler(sev_vm_state_change, s);
+ g_assert(!ram_block_discard_set_broken(true));

return s;
err:
--
2.25.3