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| From: | Paolo Bonzini |
| Subject: | Re: [Qemu-devel] [PATCH uq/master] kvm: always update the MPX model specific register |
| Date: | Wed, 22 Jan 2014 17:35:31 +0100 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 |
Il 22/01/2014 16:29, Marcelo Tosatti ha scritto:
> The original patch from Liu Jinsong restricted them to reset or full > state updates, but that's unnecessary (and wrong) since the BNDCFGS > MSR has no side effects. Why is it necessary to save/restore BNDCFGS MSR on states other than FULL and RESET?
Yes, nothing in QEMU except reset will touch the MSR, but this applies also to all the other MSRs that are saved unconditionally. It's nice to be able to poke them with gdb, and saving/restoring the MSR provides that.
Paolo
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