x86,kaslr: Use MSR_KVM_GET_RNG_SEED for KASLR if available
It's considerably better than any of the alternatives on KVM.
Rather than reinventing all of the cpu feature query code, this fixes
native_cpuid to work in PIC objects.
I haven't combined it with boot/cpuflags.c's cpuid implementation:
including asm/processor.h from boot/cpuflags.c results in a flood of
unrelated errors, and fixing it might be messy.
Cc: Kees Cook <keescook@chromium.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
1 file changed
