Re: [PATCH] Fix get ERESTARTSYS with m32 in x86_64 when debug by GDB

"H. Peter Anvin" <[email protected]> Wed, 30 Apr 2014 09:35:00 -0700

Newsgroups	gmane.linux.kernel,gmane.comp.gdb.devel
Message-ID	<[email protected]>

On 04/30/2014 06:35 AM, Mark Kettenis wrote:
> 
> If (and only if) the goal of that TS_COMPAT flag solely is to trigger
> the error code sign-extension in arch/x86/asm/syscall.h:syscall_get_error(),
> we could work around to problem in GDB by checking "orig_ax" to see if
> we're continuing an interrupted system call and sign extend the error
> code in the real "eax" register if we are.
> 

Well... this "if and only if" clause is false, although it might work
specifically in this context.  I need to do a writeup about this... I
should try to do that today.

	-hpa