linux-kernel - Re: [PATCH 0/5] ia64 ski emulator patches

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Date:	Sat, 25 Jan 2014 15:41:00 -0500 (EST)
From:	Mikulas Patocka <mpatocka@...hat.com>
To:	Mikael Pettersson <mikpelinux@...il.com>
cc:	Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>,
	linux-ia64@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] ia64 ski emulator patches



On Sat, 25 Jan 2014, Mikael Pettersson wrote:

> My ski patches are in <http://user.it.uu.se/~mikpe/linux/patches/ia64/ski-1.3.2/>
> for now.  I'll post the kernel patches to linux-ia64 @ vger in a few minutes.
> 
> /Mikael

Thanks for the patches.

Isn't this subject to races? - could it lock up if the signal happens just 
before the pause syscall?

+    case SSC_HALT_LIGHT:
+      /* Sleep until SIGIO or SIGALRM is received; this relies on
+        keyboard/ethernet input being detected via SIGIO, and the
+        ITC now being emulated via setitimer() and SIGALRM.  */
+      pause ();
+      break;
+

Mikulas
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