Re: [x86] only print out DR registers if they are not power-ondefaults.
From: Borislav Petkov
Date: Wed Jun 19 2013 - 17:53:10 EST
On Wed, Jun 19, 2013 at 02:42:49PM -0700, H. Peter Anvin wrote:
> There is serious confusion with regards to DR6 about the bits which
> are *fixed* (forced to 1) and the ones which are *reserved* (should
> always have a fixed value.)
> There are some bits in DR6 which are used by hardware probes.
Haha, I knew it! HW guys don't care about the architectural documents.
Maybe DR6 should probably be dropped altogether from the check before
exiting __show_regs early?
Sent from a fat crate under my desk. Formatting is fine.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/