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Date: Sat, 16 Jun 2007 10:36:22 -0000
From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
       Andi Kleen <ak@suse.de>, Chris Wright <chrisw@sous-sol.org>,
       Arjan van de Ven <arjan@infradead.org>,
       Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>,
       =?UTF-8?q?S=C3=A9bastien=20Dugu=C3=A9?= <sebastien.dugue@bull.net>
Subject: [patch-mm 21/25] x86_64: hpet restore vread
Content-Disposition: inline; filename=x86-64-hpet-restore-vread.patch
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>>From sebastien.dugue@bull.net

It seems the hpet clocksource's vread method was lost in the x86_64 conversion
to clockevents. So here it is.

Signed-off-by: Sébastien Dugué <sebastien.dugue@bull.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

 arch/i386/kernel/hpet.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

Index: linux-2.6.22-rc4-mm/arch/i386/kernel/hpet.c
===================================================================
--- linux-2.6.22-rc4-mm.orig/arch/i386/kernel/hpet.c	2007-06-16 12:10:24.000000000 +0200
+++ linux-2.6.22-rc4-mm/arch/i386/kernel/hpet.c	2007-06-16 12:10:24.000000000 +0200
@@ -255,6 +255,13 @@ static cycle_t read_hpet(void)
 	return (cycle_t)hpet_readl(HPET_COUNTER);
 }
 
+#ifdef CONFIG_X86_64
+static cycle_t __vsyscall_fn vread_hpet(void)
+{
+	return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + 0xf0);
+}
+#endif
+
 static struct clocksource clocksource_hpet = {
 	.name		= "hpet",
 	.rating		= 250,
@@ -263,6 +270,9 @@ static struct clocksource clocksource_hp
 	.shift		= HPET_SHIFT,
 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
 	.resume		= hpet_start_counter,
+#ifdef CONFIG_X86_64
+	.vread		= vread_hpet,
+#endif
 };
 
 /*

--