diff mbox series

[v3,2/8] x86: do not re-randomize RNG seed on snapshot load

Message ID 20221014021653.1461512-3-Jason@zx2c4.com (mailing list archive)
State New, archived
Headers show
Series rerandomize RNG seeds on reboot and handle record&replay | expand

Commit Message

Jason A. Donenfeld Oct. 14, 2022, 2:16 a.m. UTC 
Snapshot loading is supposed to be deterministic, so we shouldn't
re-randomize the various seeds used.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 hw/i386/x86.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/i386/x86.c b/hw/i386/x86.c
index 1148f70c03..bd50a064a3 100644
--- a/hw/i386/x86.c
+++ b/hw/i386/x86.c
@@ -1111,7 +1111,7 @@  void x86_load_linux(X86MachineState *x86ms,
         setup_data->type = cpu_to_le32(SETUP_RNG_SEED);
         setup_data->len = cpu_to_le32(RNG_SEED_LENGTH);
         qemu_guest_getrandom_nofail(setup_data->data, RNG_SEED_LENGTH);
-        qemu_register_reset(reset_rng_seed, setup_data);
+        qemu_register_reset_nosnapshotload(reset_rng_seed, setup_data);
         fw_cfg_add_bytes_callback(fw_cfg, FW_CFG_KERNEL_DATA, reset_rng_seed, NULL,
                                   setup_data, kernel, kernel_size, true);
     } else {