Move xen patchset to new version's subdir.

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.arch / x2APIC_PATCH_30_of_41_ad66dd340f561bdde2285992314d9e4fd9b6191e

From: Suresh Siddha <suresh.b.siddha@intel.com>
Subject: x2apic: xen64 paravirt basic apic ops
References: fate #303948 and fate #303984
Patch-Mainline: queued for .28
Commit-ID: ad66dd340f561bdde2285992314d9e4fd9b6191e

Signed-off-by: Thomas Renninger <trenn@suse.de>

Define the Xen specific basic apic ops, in additon to paravirt apic ops,
with some misc warning fixes.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: akpm@linux-foundation.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>

---
 arch/x86/lguest/boot.c     |    4 ++--
 arch/x86/xen/enlighten.c   |   41 +++++++++++++++++++++++++++++++++++++++--
 include/asm-x86/paravirt.h |   11 ++++++-----
 3 files changed, 47 insertions(+), 9 deletions(-)

Index: linux-2.6.26/arch/x86/lguest/boot.c
===================================================================
--- linux-2.6.26.orig/arch/x86/lguest/boot.c
+++ linux-2.6.26/arch/x86/lguest/boot.c
@@ -783,11 +783,11 @@ static void lguest_wbinvd(void)
  * code qualifies for Advanced.  It will also never interrupt anything.  It
  * does, however, allow us to get through the Linux boot code. */
 #ifdef CONFIG_X86_LOCAL_APIC
-static void lguest_apic_write(unsigned long reg, u32 v)
+static void lguest_apic_write(u32 reg, u32 v)
 {
 }
 
-static u32 lguest_apic_read(unsigned long reg)
+static u32 lguest_apic_read(u32 reg)
 {
 	return 0;
 }
Index: linux-2.6.26/arch/x86/xen/enlighten.c
===================================================================
--- linux-2.6.26.orig/arch/x86/xen/enlighten.c
+++ linux-2.6.26/arch/x86/xen/enlighten.c
@@ -580,16 +580,45 @@ static void xen_io_delay(void)
 }
 
 #ifdef CONFIG_X86_LOCAL_APIC
-static u32 xen_apic_read(unsigned long reg)
+static u32 xen_apic_read(u32 reg)
 {
 	return 0;
 }
 
-static void xen_apic_write(unsigned long reg, u32 val)
+static void xen_apic_write(u32 reg, u32 val)
 {
 	/* Warn to see if there's any stray references */
 	WARN_ON(1);
 }
+
+#ifdef CONFIG_X86_64
+static u64 xen_apic_icr_read(void)
+{
+	return 0;
+}
+
+static void xen_apic_icr_write(u32 low, u32 id)
+{
+	/* Warn to see if there's any stray references */
+	WARN_ON(1);
+}
+
+static void xen_apic_wait_icr_idle(void)
+{
+        return;
+}
+
+static struct apic_ops xen_basic_apic_ops = {
+	.read = xen_apic_read,
+	.write = xen_apic_write,
+	.write_atomic = xen_apic_write,
+	.icr_read = xen_apic_icr_read,
+	.icr_write = xen_apic_icr_write,
+	.wait_icr_idle = xen_apic_wait_icr_idle,
+	.safe_wait_icr_idle = xen_apic_wait_icr_idle,
+};
+#endif
+
 #endif
 
 static void xen_flush_tlb(void)
@@ -1273,8 +1302,10 @@ static const struct pv_irq_ops xen_irq_o
 
 static const struct pv_apic_ops xen_apic_ops __initdata = {
 #ifdef CONFIG_X86_LOCAL_APIC
+#ifndef CONFIG_X86_64
 	.apic_write = xen_apic_write,
 	.apic_read = xen_apic_read,
+#endif
 	.setup_boot_clock = paravirt_nop,
 	.setup_secondary_clock = paravirt_nop,
 	.startup_ipi_hook = paravirt_nop,
@@ -1676,6 +1707,12 @@ asmlinkage void __init xen_start_kernel(
 	pv_irq_ops = xen_irq_ops;
 	pv_apic_ops = xen_apic_ops;
 	pv_mmu_ops = xen_mmu_ops;
+#ifdef CONFIG_X86_64
+	/*
+	 * for 64bit, set up the basic apic ops aswell.
+	 */
+	apic_ops = &xen_basic_apic_ops;
+#endif
 
 	if (xen_feature(XENFEAT_mmu_pt_update_preserve_ad)) {
 		pv_mmu_ops.ptep_modify_prot_start = xen_ptep_modify_prot_start;
Index: linux-2.6.26/include/asm-x86/paravirt.h
===================================================================
--- linux-2.6.26.orig/include/asm-x86/paravirt.h
+++ linux-2.6.26/include/asm-x86/paravirt.h
@@ -200,15 +200,16 @@ struct pv_irq_ops {
 
 struct pv_apic_ops {
 #ifdef CONFIG_X86_LOCAL_APIC
+#ifndef CONFIG_X86_64
 	/*
 	 * Direct APIC operations, principally for VMI.  Ideally
 	 * these shouldn't be in this interface.
 	 */
-	void (*apic_write)(unsigned long reg, u32 v);
-	u32 (*apic_read)(unsigned long reg);
+	void (*apic_write)(u32 reg, u32 v);
+	u32 (*apic_read)(u32 reg);
+#endif
 	void (*setup_boot_clock)(void);
 	void (*setup_secondary_clock)(void);
-
 	void (*startup_ipi_hook)(int phys_apicid,
 				 unsigned long start_eip,
 				 unsigned long start_esp);
@@ -902,12 +903,12 @@ static inline void slow_down_io(void)
  * Basic functions accessing APICs.
  */
 #ifndef CONFIG_X86_64
-static inline void apic_write(unsigned long reg, u32 v)
+static inline void apic_write(u32 reg, u32 v)
 {
 	PVOP_VCALL2(pv_apic_ops.apic_write, reg, v);
 }
 
-static inline u32 apic_read(unsigned long reg)
+static inline u32 apic_read(u32 reg)
 {
 	return PVOP_CALL1(unsigned long, pv_apic_ops.apic_read, reg);
 }