RDPID corresponds to a RDMSR(TSC_AUX); however, it is unprivileged
so for user-mode emulation we must provide the value that the kernel
places in the MSR. For Linux, it is a combination of the current CPU
and the current NUMA node, both of which can be retrieved with getcpu(2).
For BSD, just return 0.
RDTSCP is reimplemented as RDTSC + RDPID ECX; the differences in terms
of serializability are not relevant to QEMU.
Signed-off-by: Paolo Bonzini<pbonzini@redhat.com>
---
meson.build | 1 +
target/i386/cpu.c | 10 +++++++++-
target/i386/helper.h | 2 +-
target/i386/tcg/misc_helper.c | 23 +++++++++++++++++------
target/i386/tcg/translate.c | 15 +++++++++++++--
5 files changed, 41 insertions(+), 10 deletions(-)