linux-kernel - [PATCH 6/25][V3] add native_apic read and write functions, as well as boot clocks ones

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Message-Id: <11871822421713-git-send-email-gcosta@redhat.com>
Date:	Wed, 15 Aug 2007 09:49:26 -0300
From:	Glauber de Oliveira Costa <gcosta@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, rusty@...tcorp.com.au, ak@...e.de,
	mingo@...e.hu, chrisw@...s-sol.org, jeremy@...p.org,
	avi@...ranet.com, anthony@...emonkey.ws,
	virtualization@...ts.linux-foundation.org, lguest@...abs.org,
	glommer@...il.com, Glauber de Oliveira Costa <gcosta@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: [PATCH 6/25][V3] add native_apic read and write functions, as well as boot clocks ones

Time for the apic handling functions to get their native counterparts.
Also, put the native hook for the boot clocks functions in the apic.h header

Signed-off-by: Glauber de Oliveira Costa <gcosta@...hat.com>
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
---
 arch/x86_64/kernel/apic.c    |    2 +-
 arch/x86_64/kernel/smpboot.c |    8 +++++++-
 include/asm-x86_64/apic.h    |   13 +++++++++++--
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/arch/x86_64/kernel/apic.c b/arch/x86_64/kernel/apic.c
index 900ff38..2d233ef 100644
--- a/arch/x86_64/kernel/apic.c
+++ b/arch/x86_64/kernel/apic.c
@@ -1193,7 +1193,7 @@ int __init APIC_init_uniprocessor (void)
 		setup_IO_APIC();
 	else
 		nr_ioapics = 0;
-	setup_boot_APIC_clock();
+	setup_boot_clock();
 	check_nmi_watchdog();
 	return 0;
 }
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index f99ced6..12d653d 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -338,7 +338,7 @@ void __cpuinit start_secondary(void)
 	check_tsc_sync_target();
 
 	Dprintk("cpu %d: setting up apic clock\n", smp_processor_id()); 	
-	setup_secondary_APIC_clock();
+	setup_secondary_clock();
 
 	Dprintk("cpu %d: enabling apic timer\n", smp_processor_id());
 
@@ -468,6 +468,12 @@ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int sta
 	num_starts = 2;
 
 	/*
+	 * Paravirt wants a startup IPI hook here to set up the
+	 * target processor state.
+	 */
+	startup_ipi_hook(phys_apicid, (unsigned long) start_rip,
+		         (unsigned long) init_rsp);
+	/*
 	 * Run STARTUP IPI loop.
 	 */
 	Dprintk("#startup loops: %d.\n", num_starts);
diff --git a/include/asm-x86_64/apic.h b/include/asm-x86_64/apic.h
index 85125ef..de17908 100644
--- a/include/asm-x86_64/apic.h
+++ b/include/asm-x86_64/apic.h
@@ -38,16 +38,25 @@ struct pt_regs;
  * Basic functions accessing APICs.
  */
 
-static __inline void apic_write(unsigned long reg, unsigned int v)
+static __inline void native_apic_write(unsigned long reg, unsigned int v)
 {
 	*((volatile unsigned int *)(APIC_BASE+reg)) = v;
 }
 
-static __inline unsigned int apic_read(unsigned long reg)
+static __inline unsigned int native_apic_read(unsigned long reg)
 {
 	return *((volatile unsigned int *)(APIC_BASE+reg));
 }
 
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
+#define apic_write(reg, v) native_apic_write(reg, v)
+#define apic_read(reg)  native_apic_read(reg)
+#define setup_boot_clock(void)	setup_boot_APIC_clock(void)
+#define setup_secondary_clock(void) setup_secondary_APIC_clock(void)
+#endif
+
 extern void apic_wait_icr_idle(void);
 extern unsigned int safe_apic_wait_icr_idle(void);
 
-- 
1.4.4.2

-
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