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Date: Tue, 7 Jan 2014 20:12:57 +0100 From: Oleg Nesterov <oleg@...hat.com> To: Sergio Durigan Junior <sergiodj@...hat.com> Cc: LKML <linux-kernel@...r.kernel.org>, Roland McGrath <roland@...k.frob.com>, Denys Vlasenko <dvlasenk@...hat.com>, Pedro Alves <palves@...hat.com>, Tom Tromey <tromey@...hat.com>, Jan Kratochvil <jan.kratochvil@...hat.com>, Tejun Heo <tj@...nel.org>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: [RFC/PATCH] Implement new PTRACE_EVENT_SYSCALL_{ENTER,EXIT} On 01/07, Sergio Durigan Junior wrote: > > On Tuesday, January 07 2014, Oleg Nesterov wrote: > > > Finally. If we add this feature, we should probably also report > > is_compat_task() somehow. Currently the debugger can't know if, say, > > a 64bit tracee does int80. > > OK, I will look into it, have no idea how to do that. Suggestions are > welcome, of course. Well, you can probably encode is_compat_task() in ->ptrace_message along with syscall_get_nr(). But I am not sure about __X32_SYSCALL_BIT in ->orig_ax. Probably we should not clear it and report both bits. Oleg.q -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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