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cpus: Initialize pseudo-random seeds for all guest cpus

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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 <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2019-03-14 13:06:29 -07:00
parent 8d8404f156
commit 9c09a2518e
4 changed files with 24 additions and 0 deletions
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include/qom/cpu.h
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@ -375,6 +375,7 @@ struct CPUState {
int singlestep_enabled;
int64_t icount_budget;
int64_t icount_extra;
uint64_t random_seed;
sigjmp_buf jmp_env;
QemuMutex work_mutex;