---

yaml
---
r: 12080
b: refs/heads/master
c: ef0eaa1
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 53b2ec5518aa2623e8c0cb36f1c304a797988a46
+refs/heads/master: ef0eaa13362041f531f951b89362bfbc177e2bc0

trunk/arch/i386/Kconfig

@@ -1042,8 +1042,3 @@ config X86_TRAMPOLINE
 	bool
 	depends on X86_SMP || (X86_VOYAGER && SMP)
 	default y
-
-config PC
-	bool
-	depends on X86 && !EMBEDDED
-	default y

trunk/arch/i386/kernel/apic.c

@@ -803,7 +803,6 @@ static int __init detect_init_APIC (void)
 
 void __init init_apic_mappings(void)
 {
-	unsigned int orig_apicid;
 	unsigned long apic_phys;
 
 	/*
@@ -825,11 +824,8 @@ void __init init_apic_mappings(void)
 	 * Fetch the APIC ID of the BSP in case we have a
 	 * default configuration (or the MP table is broken).
 	 */
-	orig_apicid = boot_cpu_physical_apicid;
-	boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
-	if ((orig_apicid != -1U) && (orig_apicid != boot_cpu_physical_apicid))
-		printk(KERN_WARNING "Boot APIC ID in local APIC unexpected (%d vs %d)",
-			orig_apicid, boot_cpu_physical_apicid);
+	if (boot_cpu_physical_apicid == -1U)
+		boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
 
 #ifdef CONFIG_X86_IO_APIC
 	{
@@ -1259,81 +1255,40 @@ fastcall void smp_error_interrupt(struct pt_regs *regs)
 }
 
 /*
- * This initializes the IO-APIC and APIC hardware.
+ * This initializes the IO-APIC and APIC hardware if this is
+ * a UP kernel.
  */
-int __init APIC_init(void)
+int __init APIC_init_uniprocessor (void)
 {
-	if (enable_local_apic < 0) {
-		printk(KERN_INFO "APIC disabled\n");
-		return -1;
-	}
+	if (enable_local_apic < 0)
+		clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
 
-	/* See if we have a SMP configuration or have forced enabled
-	 * the local apic.
-	 */
-	if (!smp_found_config && !acpi_lapic && !cpu_has_apic) {
-		enable_local_apic = -1;
+	if (!smp_found_config && !cpu_has_apic)
 		return -1;
-	}
 
 	/*
-	 * Complain if the BIOS pretends there is an apic.
-	 * Then get out because we don't have an a local apic.
+	 * Complain if the BIOS pretends there is one.
 	 */
 	if (!cpu_has_apic && APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
 		printk(KERN_ERR "BIOS bug, local APIC #%d not detected!...\n",
 			boot_cpu_physical_apicid);
-		printk(KERN_ERR "... forcing use of dummy APIC emulation. (tell your hw vendor)\n");
-		enable_local_apic = -1;
 		return -1;
 	}
 
 	verify_local_APIC();
 
-	/*
-	 * Should not be necessary because the MP table should list the boot
-	 * CPU too, but we do it for the sake of robustness anyway.
-	 * Makes no sense to do this check in clustered apic mode, so skip it
-	 */
-	if (!check_phys_apicid_present(boot_cpu_physical_apicid)) {
-		printk("weird, boot CPU (#%d) not listed by the BIOS.\n",
-				boot_cpu_physical_apicid);
-		physid_set(boot_cpu_physical_apicid, phys_cpu_present_map);
-	}
-
-	/*
-	 * Switch from PIC to APIC mode.
-	 */
 	connect_bsp_APIC();
-	setup_local_APIC();
 
-#ifdef CONFIG_X86_IO_APIC
-	/*
-	 * Now start the IO-APICs
-	 */
-	if (smp_found_config && !skip_ioapic_setup && nr_ioapics)
-		setup_IO_APIC();
-#endif
-	return 0;
-}
+	phys_cpu_present_map = physid_mask_of_physid(boot_cpu_physical_apicid);
 
-void __init APIC_late_time_init(void)
-{
-	/* Improve our loops per jiffy estimate */
-	loops_per_jiffy = ((1000 + HZ - 1)/HZ)*cpu_khz;
-	boot_cpu_data.loops_per_jiffy = loops_per_jiffy;
-	cpu_data[0].loops_per_jiffy = loops_per_jiffy;
-
-	/* setup_apic_nmi_watchdog doesn't work properly before cpu_khz is
-	 * initialized.  So redo it here to ensure the boot cpu is setup
-	 * properly.
-	 */
-	if (nmi_watchdog == NMI_LOCAL_APIC)
-		setup_apic_nmi_watchdog();
+	setup_local_APIC();
 
 #ifdef CONFIG_X86_IO_APIC
-	if (smp_found_config && !skip_ioapic_setup && nr_ioapics)
-		IO_APIC_late_time_init();
+	if (smp_found_config)
+		if (!skip_ioapic_setup && nr_ioapics)
+			setup_IO_APIC();
 #endif
 	setup_boot_APIC_clock();
+
+	return 0;
 }

trunk/arch/i386/kernel/i8259.c

@@ -435,8 +435,4 @@ void __init init_IRQ(void)
 		setup_irq(FPU_IRQ, &fpu_irq);
 
 	irq_ctx_init(smp_processor_id());
-
-#ifdef CONFIG_X86_LOCAL_APIC
-	APIC_init();
-#endif
 }

trunk/arch/i386/kernel/io_apic.c

@@ -2387,15 +2387,11 @@ void __init setup_IO_APIC(void)
 	sync_Arb_IDs();
 	setup_IO_APIC_irqs();
 	init_IO_APIC_traps();
+	check_timer();
 	if (!acpi_ioapic)
 		print_IO_APIC();
 }
 
-void __init IO_APIC_late_time_init(void)
-{
-	check_timer();
-}
-
 /*
  *	Called after all the initialization is done. If we didnt find any
  *	APIC bugs then we can allow the modify fast path

trunk/arch/i386/kernel/smpboot.c

@@ -1078,16 +1078,6 @@ void *xquad_portio;
 EXPORT_SYMBOL(xquad_portio);
 #endif
 
-/*
- * Fall back to non SMP mode after errors.
- *
- */
-static __init void disable_smp(void)
-{
-	cpu_set(0, cpu_sibling_map[0]);
-	cpu_set(0, cpu_core_map[0]);
-}
-
 static void __init smp_boot_cpus(unsigned int max_cpus)
 {
 	int apicid, cpu, bit, kicked;
@@ -1100,6 +1090,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
 	printk("CPU%d: ", 0);
 	print_cpu_info(&cpu_data[0]);
 
+	boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
 	boot_cpu_logical_apicid = logical_smp_processor_id();
 	x86_cpu_to_apicid[0] = boot_cpu_physical_apicid;
 
@@ -1111,27 +1102,68 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
 	cpus_clear(cpu_core_map[0]);
 	cpu_set(0, cpu_core_map[0]);
 
-	map_cpu_to_logical_apicid();
-
 	/*
 	 * If we couldn't find an SMP configuration at boot time,
 	 * get out of here now!
 	 */
 	if (!smp_found_config && !acpi_lapic) {
 		printk(KERN_NOTICE "SMP motherboard not detected.\n");
-		disable_smp();
+		smpboot_clear_io_apic_irqs();
+		phys_cpu_present_map = physid_mask_of_physid(0);
+		if (APIC_init_uniprocessor())
+			printk(KERN_NOTICE "Local APIC not detected."
+					   " Using dummy APIC emulation.\n");
+		map_cpu_to_logical_apicid();
+		cpu_set(0, cpu_sibling_map[0]);
+		cpu_set(0, cpu_core_map[0]);
+		return;
+	}
+
+	/*
+	 * Should not be necessary because the MP table should list the boot
+	 * CPU too, but we do it for the sake of robustness anyway.
+	 * Makes no sense to do this check in clustered apic mode, so skip it
+	 */
+	if (!check_phys_apicid_present(boot_cpu_physical_apicid)) {
+		printk("weird, boot CPU (#%d) not listed by the BIOS.\n",
+				boot_cpu_physical_apicid);
+		physid_set(hard_smp_processor_id(), phys_cpu_present_map);
+	}
+
+	/*
+	 * If we couldn't find a local APIC, then get out of here now!
+	 */
+	if (APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid]) && !cpu_has_apic) {
+		printk(KERN_ERR "BIOS bug, local APIC #%d not detected!...\n",
+			boot_cpu_physical_apicid);
+		printk(KERN_ERR "... forcing use of dummy APIC emulation. (tell your hw vendor)\n");
+		smpboot_clear_io_apic_irqs();
+		phys_cpu_present_map = physid_mask_of_physid(0);
+		cpu_set(0, cpu_sibling_map[0]);
+		cpu_set(0, cpu_core_map[0]);
 		return;
 	}
 
+	verify_local_APIC();
+
 	/*
 	 * If SMP should be disabled, then really disable it!
 	 */
-	if (!max_cpus || (enable_local_apic < 0)) {
-		printk(KERN_INFO "SMP mode deactivated.\n");
-		disable_smp();
+	if (!max_cpus) {
+		smp_found_config = 0;
+		printk(KERN_INFO "SMP mode deactivated, forcing use of dummy APIC emulation.\n");
+		smpboot_clear_io_apic_irqs();
+		phys_cpu_present_map = physid_mask_of_physid(0);
+		cpu_set(0, cpu_sibling_map[0]);
+		cpu_set(0, cpu_core_map[0]);
 		return;
 	}
 
+	connect_bsp_APIC();
+	setup_local_APIC();
+	map_cpu_to_logical_apicid();
+
+
 	setup_portio_remap();
 
 	/*
@@ -1212,6 +1244,10 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
 	cpu_set(0, cpu_sibling_map[0]);
 	cpu_set(0, cpu_core_map[0]);
 
+	smpboot_setup_io_apic();
+
+	setup_boot_APIC_clock();
+
 	/*
 	 * Synchronize the TSC with the AP
 	 */

trunk/arch/i386/kernel/time.c

@@ -440,8 +440,8 @@ static int time_init_device(void)
 
 device_initcall(time_init_device);
 
-extern void (*late_time_init)(void);
 #ifdef CONFIG_HPET_TIMER
+extern void (*late_time_init)(void);
 /* Duplicate of time_init() below, with hpet_enable part added */
 static void __init hpet_time_init(void)
 {
@@ -458,11 +458,6 @@ static void __init hpet_time_init(void)
 	printk(KERN_INFO "Using %s for high-res timesource\n",cur_timer->name);
 
 	time_init_hook();
-
-#ifdef CONFIG_X86_LOCAL_APIC
-	if (enable_local_apic >= 0)
-		APIC_late_time_init();
-#endif
 }
 #endif
 
@@ -487,9 +482,4 @@ void __init time_init(void)
 	printk(KERN_INFO "Using %s for high-res timesource\n",cur_timer->name);
 
 	time_init_hook();
-
-#ifdef CONFIG_X86_LOCAL_APIC
-	if (enable_local_apic >= 0)
-		late_time_init = APIC_late_time_init;
-#endif
 }

trunk/drivers/input/keyboard/Kconfig

@@ -13,11 +13,11 @@ menuconfig INPUT_KEYBOARD
 if INPUT_KEYBOARD
 
 config KEYBOARD_ATKBD
-	tristate "AT keyboard" if !PC
+	tristate "AT keyboard" if !X86_PC
 	default y
 	select SERIO
 	select SERIO_LIBPS2
-	select SERIO_I8042 if PC
+	select SERIO_I8042 if X86_PC
 	select SERIO_GSCPS2 if GSC
 	help
 	  Say Y here if you want to use a standard AT or PS/2 keyboard. Usually

trunk/drivers/input/mouse/Kconfig

@@ -17,7 +17,7 @@ config MOUSE_PS2
 	default y
 	select SERIO
 	select SERIO_LIBPS2
-	select SERIO_I8042 if PC
+	select SERIO_I8042 if X86_PC
 	select SERIO_GSCPS2 if GSC
 	---help---
 	  Say Y here if you have a PS/2 mouse connected to your system. This

trunk/drivers/scsi/ide-scsi.c

@@ -180,12 +180,22 @@ static void idescsi_input_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsigne
 			return;
 		}
 		count = min(pc->sg->length - pc->b_count, bcount);
-		buf = kmap_atomic(pc->sg->page, KM_IRQ0);
-		drive->hwif->atapi_input_bytes(drive,
-				buf + pc->b_count + pc->sg->offset, count);
-		kunmap_atomic(buf, KM_IRQ0);
-		bcount -= count;
-		pc->b_count += count;
+		if (PageHighMem(pc->sg->page)) {
+			unsigned long flags;
+
+			local_irq_save(flags);
+			buf = kmap_atomic(pc->sg->page, KM_IRQ0) +
+					pc->sg->offset;
+			drive->hwif->atapi_input_bytes(drive,
+						buf + pc->b_count, count);
+			kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
+			local_irq_restore(flags);
+		} else {
+			buf = page_address(pc->sg->page) + pc->sg->offset;
+			drive->hwif->atapi_input_bytes(drive,
+						buf + pc->b_count, count);
+		}
+		bcount -= count; pc->b_count += count;
 		if (pc->b_count == pc->sg->length) {
 			pc->sg++;
 			pc->b_count = 0;
@@ -205,12 +215,22 @@ static void idescsi_output_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsign
 			return;
 		}
 		count = min(pc->sg->length - pc->b_count, bcount);
-		buf = kmap_atomic(pc->sg->page, KM_IRQ0);
-		drive->hwif->atapi_output_bytes(drive,
-				buf + pc->b_count + pc->sg->offset, count);
-		kunmap_atomic(buf, KM_IRQ0);
-		bcount -= count;
-		pc->b_count += count;
+		if (PageHighMem(pc->sg->page)) {
+			unsigned long flags;
+
+			local_irq_save(flags);
+			buf = kmap_atomic(pc->sg->page, KM_IRQ0) +
+						pc->sg->offset;
+			drive->hwif->atapi_output_bytes(drive,
+						buf + pc->b_count, count);
+			kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
+			local_irq_restore(flags);
+		} else {
+			buf = page_address(pc->sg->page) + pc->sg->offset;
+			drive->hwif->atapi_output_bytes(drive,
+						buf + pc->b_count, count);
+		}
+		bcount -= count; pc->b_count += count;
 		if (pc->b_count == pc->sg->length) {
 			pc->sg++;
 			pc->b_count = 0;