From 9c09a2518eac6277c09ee006841c94abe7305e53 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Thu, 14 Mar 2019 13:06:29 -0700 Subject: cpus: Initialize pseudo-random seeds for all guest cpus MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When the -seed option is given, call qemu_guest_random_seed_main, putting the subsystem into deterministic mode. Pass derived seeds to each cpu created; which is a no-op unless the subsystem is in deterministic mode. Reviewed-by: Laurent Vivier Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Daniel P. Berrangé Signed-off-by: Richard Henderson --- qemu-options.hx | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'qemu-options.hx') diff --git a/qemu-options.hx b/qemu-options.hx index 5daa5a8fb0..7ae3373a00 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -3641,6 +3641,16 @@ the 0x200 sized block starting at 0xffffffc000080000 and another 0x1000 sized block starting at 0xffffffc00005f000. ETEXI +DEF("seed", HAS_ARG, QEMU_OPTION_seed, \ + "-seed number seed the pseudo-random number generator\n", + QEMU_ARCH_ALL) +STEXI +@item -seed @var{number} +@findex -seed +Force the guest to use a deterministic pseudo-random number generator, seeded +with @var{number}. This does not affect crypto routines within the host. +ETEXI + DEF("L", HAS_ARG, QEMU_OPTION_L, \ "-L path set the directory for the BIOS, VGA BIOS and keymaps\n", QEMU_ARCH_ALL) -- cgit v1.2.3