Messages in this thread | | | Date | Thu, 17 May 2007 02:36:21 -0400 | From | Bernardo Innocenti <> | Subject | Re: kdb: add rdmsr and wrmsr commands for i386 |
| |
Keith Owens wrote:
> Before using MSR, you must first check that the cpu supports the > instruction, rd/wrmsr cause an oops on 486 or earlier. Also using an > invalid msr number causes an oops, so use rd/wrmsr_safe().
I didn't bother implementing those checks because kdb recovers nicely from GPF anyway. It's the valid MSR writes that could cause unrecoveable problems! :)
-- // Bernardo Innocenti \X/ http://www.codewiz.org/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |