> From: Qemu-devel [mailto:qemu-devel-bounces+luwei.kang=intel....@nongnu.org]
> On Behalf Of Paolo Bonzini
> Sent: Friday, December 21, 2018 8:44 PM
> To: qemu-devel@nongnu.org
> Cc: ehabk...@redhat.com; qemu-sta...@nongnu.org
> Subject: [Qemu-devel] [PATCH] i386: mark the 'INTEL_PT' CPUID bit as
> unmigratable
>
> Marshaling of processor tracing MSRs is not yet implemented in QEMU, mark the
> feature as unmigratable.
Hi Paolo,
I think Intel PT has supported live migration. I don't understand what you
mean.
commit b77146e9a129bcdb60edc23639211679ae846a92
Author: Chao Peng <chao.p.p...@linux.intel.com>
Date: Mon Mar 5 00:48:36 2018 +0800
i386: Add support to get/set/migrate Intel Processor Trace feature
Thanks,
Luwei Kang
>
> Cc: qemu-sta...@nongnu.org
> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
> ---
> target/i386/cpu.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/target/i386/cpu.c b/target/i386/cpu.c index
> 9c54c41e7a..a6a597d2bf 100644
> --- a/target/i386/cpu.c
> +++ b/target/i386/cpu.c
> @@ -1012,6 +1012,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS]
> = {
> .needs_ecx = true, .ecx = 0,
> .reg = R_EBX,
> },
> + .unmigratable_features = CPUID_7_0_EBX_INTEL_PT,
> .tcg_features = TCG_7_0_EBX_FEATURES,
> },
> [FEAT_7_0_ECX] = {
> --
> 2.20.1
>
