Messages in this thread | | | Date | Thu, 22 Feb 2007 17:13:26 +0530 | From | "S. P. Prasanna" <> | Subject | Re: [PATCH] Kwatch: kernel watchpoints using CPU debug registers |
| |
On Wed, Feb 21, 2007 at 03:35:13PM -0500, Alan Stern wrote: > Going back to something you mentioned earlier... > [...] > On Fri, 9 Feb 2007, Roland McGrath wrote: > There are two things I am uncertain about: vm86 mode and kprobes. I don't > know anything about how either of them works. Judging from the current > code, nothing much should be needed -- debug traps in vm86 mode are > handled by calling handle_vm86_trap(), and kprobes puts itself at the > start of the notify_die() chain so it can handle single-step traps. > Eventually it will be necessary to check with someone who really > understands the issues.
Yes, Kprobes needs to get notified first to handle single-step traps. So kwatch getting notified secound should be fine.
Thanks Prasanna -- Prasanna S.P. Linux Technology Center India Software Labs, IBM Bangalore Email: prasanna@in.ibm.com Ph: 91-80-41776329 - 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/
| |