[XEN] Upgrade some platform files to Linux 2.6.17.13.

Signed-off-by: Keir Fraser <keir@xensource.com>

1 files changed, 26 insertions, 35 deletions

diff --git a/xen/arch/x86/mpparse.c b/xen/arch/x86/mpparse.c
index 7141b55f27..c39ea42b6b 100644
--- a/xen/arch/x86/mpparse.c
+++ b/xen/arch/x86/mpparse.c
@@ -35,13 +35,7 @@
 
 /* Have we found an MP table */
 int smp_found_config;
-unsigned int __devinitdata maxcpus = NR_CPUS;
-
-#ifdef CONFIG_HOTPLUG_CPU
-#define CPU_HOTPLUG_ENABLED	(1)
-#else
-#define CPU_HOTPLUG_ENABLED	(0)
-#endif
+unsigned int __initdata maxcpus = NR_CPUS;
 
 /*
  * Various Linux-internal data structures created from the
@@ -73,9 +67,8 @@ unsigned int def_to_bigsmp = 0;
 
 /* Processor that is doing the boot up */
 unsigned int boot_cpu_physical_apicid = -1U;
-unsigned int boot_cpu_logical_apicid = -1U;
 /* Internal processor count */
-static unsigned int __initdata num_processors;
+static unsigned int __devinitdata num_processors;
 
 /* Bitmask of physically existing CPUs */
 physid_mask_t phys_cpu_present_map;
@@ -107,24 +100,9 @@ static int __init mpf_checksum(unsigned char *mp, int len)
  * doing this ....
  */
 
-static int mpc_record;
+static int mpc_record; 
 static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY] __initdata;
 
-#ifdef CONFIG_X86_NUMAQ
-static int MP_valid_apicid(int apicid, int version)
-{
-	return hweight_long(apicid & 0xf) == 1 && (apicid >> 4) != 0xf;
-}
-#else
-static int MP_valid_apicid(int apicid, int version)
-{
-	if (version >= 0x14)
-		return apicid < 0xff;
-	else
-		return apicid < 0xf;
-}
-#endif
-
 static void __devinit MP_processor_info (struct mpc_config_processor *m)
 {
  	int ver, apicid;
@@ -190,12 +168,6 @@ static void __devinit MP_processor_info (struct mpc_config_processor *m)
 
 	ver = m->mpc_apicver;
 
-	if (!MP_valid_apicid(apicid, ver)) {
-		printk(KERN_WARNING "Processor #%d INVALID. (Max ID: %d).\n",
-			m->mpc_apicid, MAX_APICS);
-		return;
-	}
-
 	/*
 	 * Validate version
 	 */
@@ -225,7 +197,7 @@ static void __devinit MP_processor_info (struct mpc_config_processor *m)
 	cpu_set(num_processors, cpu_possible_map);
 	num_processors++;
 
-	if (CPU_HOTPLUG_ENABLED || (num_processors > 8)) {
+	if (num_processors > 8) {
 		/*
 		 * No need for processor or APIC checks: physical delivery
 		 * (bigsmp) mode should always work.
@@ -244,6 +216,15 @@ static void __init MP_bus_info (struct mpc_config_bus *m)
 
 	mpc_oem_bus_info(m, str, translation_table[mpc_record]);
 
+#if 0 /* size of mpc_busid (8 bits) makes this check unnecessary */
+	if (m->mpc_busid >= MAX_MP_BUSSES) {
+		printk(KERN_WARNING "MP table busid value (%d) for bustype %s "
+			" is too large, max. supported is %d\n",
+			m->mpc_busid, str, MAX_MP_BUSSES - 1);
+		return;
+	}
+#endif
+
 	if (strncmp(str, BUSTYPE_ISA, sizeof(BUSTYPE_ISA)-1) == 0) {
 		mp_bus_id_to_type[m->mpc_busid] = MP_BUS_ISA;
 	} else if (strncmp(str, BUSTYPE_EISA, sizeof(BUSTYPE_EISA)-1) == 0) {
@@ -931,7 +912,8 @@ void __init mp_register_ioapic (
 	mp_ioapics[idx].mpc_apicaddr = address;
 
 	set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
-	if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 < 15))
+	if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
+		&& !APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
 		tmpid = io_apic_get_unique_id(idx, id);
 	else
 		tmpid = id;
@@ -1007,7 +989,6 @@ void __init mp_override_legacy_irq (
 	return;
 }
 
-
 void __init mp_config_acpi_legacy_irqs (void)
 {
 	struct mpc_config_intsrc intsrc;
@@ -1139,7 +1120,17 @@ int mp_register_gsi (u32 gsi, int triggering, int polarity)
 		 */
 		int irq = gsi;
 		if (gsi < MAX_GSI_NUM) {
-			if (gsi > 15)
+			/*
+			 * Retain the VIA chipset work-around (gsi > 15), but
+			 * avoid a problem where the 8254 timer (IRQ0) is setup
+			 * via an override (so it's not on pin 0 of the ioapic),
+			 * and at the same time, the pin 0 interrupt is a PCI
+			 * type.  The gsi > 15 test could cause these two pins
+			 * to be shared as IRQ0, and they are not shareable.
+			 * So test for this condition, and if necessary, avoid
+			 * the pin collision.
+			 */
+			if (gsi > 15 || (gsi == 0 && !timer_uses_ioapic_pin_0))
 				gsi = pci_irq++;
 #ifdef CONFIG_ACPI_BUS
 			/*