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| From: | Paolo Bonzini |
| Subject: | Re: [Qemu-devel] [PATCH 05/14] target-i386: Enable control registers for MPX |
| Date: | Tue, 9 Feb 2016 14:28:17 +0100 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 |
On 09/07/2015 10:17, Richard Henderson wrote:
> + /* Disallow enabling only half of MPX. */
> + if ((mask ^ (mask * (XSTATE_BNDCSR / XSTATE_BNDREGS))) & XSTATE_BNDCSR) {
I'm refreshing patches 1-4 to add PKE support, and this caught my eye...
What about just
if (!!(mask & XSTATE_BNDCSR) != !!(mask & XSTATE_BNDREGS))
?
Paolo
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