---

yaml
---
r: 57074
b: refs/heads/master
c: 5cbc307
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e01c0d6d8cf29c1c11725837b265598cab687952
+refs/heads/master: 5cbc30737398b49f62ae8603129ce43ac7db1a41

trunk/arch/sparc64/kernel/Makefile

@@ -8,11 +8,11 @@ EXTRA_CFLAGS := -Werror
 extra-y		:= head.o init_task.o vmlinux.lds
 
 obj-y		:= process.o setup.o cpu.o idprom.o \
-		   traps.o devices.o auxio.o una_asm.o \
+		   traps.o auxio.o una_asm.o \
 		   irq.o ptrace.o time.o sys_sparc.o signal.o \
 		   unaligned.o central.o pci.o starfire.o semaphore.o \
 		   power.o sbus.o iommu_common.o sparc64_ksyms.o chmc.o \
-		   visemul.o prom.o of_device.o hvapi.o sstate.o
+		   visemul.o prom.o of_device.o hvapi.o sstate.o mdesc.o
 
 obj-$(CONFIG_STACKTRACE) += stacktrace.o
 obj-$(CONFIG_PCI)	 += ebus.o isa.o pci_common.o pci_iommu.o \

trunk/arch/sparc64/kernel/entry.S

@@ -1949,3 +1949,12 @@ sun4v_mach_set_soft_state:
 	ta	HV_FAST_TRAP
 	retl
 	 nop
+
+	.globl	sun4v_mach_desc
+sun4v_mach_desc:
+	mov	%o2, %o4
+	mov	HV_FAST_MACH_DESC, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	retl
+	 nop

trunk/arch/sparc64/kernel/irq.c

@@ -171,8 +171,6 @@ int show_interrupts(struct seq_file *p, void *v)
 	return 0;
 }
 
-extern unsigned long real_hard_smp_processor_id(void);
-
 static unsigned int sun4u_compute_tid(unsigned long imap, unsigned long cpuid)
 {
 	unsigned int tid;
@@ -694,9 +692,20 @@ void init_irqwork_curcpu(void)
 	trap_block[cpu].irq_worklist = 0;
 }
 
-static void __cpuinit register_one_mondo(unsigned long paddr, unsigned long type)
+/* Please be very careful with register_one_mondo() and
+ * sun4v_register_mondo_queues().
+ *
+ * On SMP this gets invoked from the CPU trampoline before
+ * the cpu has fully taken over the trap table from OBP,
+ * and it's kernel stack + %g6 thread register state is
+ * not fully cooked yet.
+ *
+ * Therefore you cannot make any OBP calls, not even prom_printf,
+ * from these two routines.
+ */
+static void __cpuinit register_one_mondo(unsigned long paddr, unsigned long type, unsigned long qmask)
 {
-	unsigned long num_entries = 128;
+	unsigned long num_entries = (qmask + 1) / 64;
 	unsigned long status;
 
 	status = sun4v_cpu_qconf(type, paddr, num_entries);
@@ -711,44 +720,58 @@ static void __cpuinit sun4v_register_mondo_queues(int this_cpu)
 {
 	struct trap_per_cpu *tb = &trap_block[this_cpu];
 
-	register_one_mondo(tb->cpu_mondo_pa, HV_CPU_QUEUE_CPU_MONDO);
-	register_one_mondo(tb->dev_mondo_pa, HV_CPU_QUEUE_DEVICE_MONDO);
-	register_one_mondo(tb->resum_mondo_pa, HV_CPU_QUEUE_RES_ERROR);
-	register_one_mondo(tb->nonresum_mondo_pa, HV_CPU_QUEUE_NONRES_ERROR);
+	register_one_mondo(tb->cpu_mondo_pa, HV_CPU_QUEUE_CPU_MONDO,
+			   tb->cpu_mondo_qmask);
+	register_one_mondo(tb->dev_mondo_pa, HV_CPU_QUEUE_DEVICE_MONDO,
+			   tb->dev_mondo_qmask);
+	register_one_mondo(tb->resum_mondo_pa, HV_CPU_QUEUE_RES_ERROR,
+			   tb->resum_qmask);
+	register_one_mondo(tb->nonresum_mondo_pa, HV_CPU_QUEUE_NONRES_ERROR,
+			   tb->nonresum_qmask);
 }
 
-static void __cpuinit alloc_one_mondo(unsigned long *pa_ptr, int use_bootmem)
+static void __cpuinit alloc_one_mondo(unsigned long *pa_ptr, unsigned long qmask, int use_bootmem)
 {
-	void *page;
+	unsigned long size = PAGE_ALIGN(qmask + 1);
+	unsigned long order = get_order(size);
+	void *p = NULL;
 
-	if (use_bootmem)
-		page = alloc_bootmem_low_pages(PAGE_SIZE);
-	else
-		page = (void *) get_zeroed_page(GFP_ATOMIC);
+	if (use_bootmem) {
+		p = __alloc_bootmem_low(size, size, 0);
+	} else {
+		struct page *page = alloc_pages(GFP_ATOMIC | __GFP_ZERO, order);
+		if (page)
+			p = page_address(page);
+	}
 
-	if (!page) {
+	if (!p) {
 		prom_printf("SUN4V: Error, cannot allocate mondo queue.\n");
 		prom_halt();
 	}
 
-	*pa_ptr = __pa(page);
+	*pa_ptr = __pa(p);
 }
 
-static void __cpuinit alloc_one_kbuf(unsigned long *pa_ptr, int use_bootmem)
+static void __cpuinit alloc_one_kbuf(unsigned long *pa_ptr, unsigned long qmask, int use_bootmem)
 {
-	void *page;
+	unsigned long size = PAGE_ALIGN(qmask + 1);
+	unsigned long order = get_order(size);
+	void *p = NULL;
 
-	if (use_bootmem)
-		page = alloc_bootmem_low_pages(PAGE_SIZE);
-	else
-		page = (void *) get_zeroed_page(GFP_ATOMIC);
+	if (use_bootmem) {
+		p = __alloc_bootmem_low(size, size, 0);
+	} else {
+		struct page *page = alloc_pages(GFP_ATOMIC | __GFP_ZERO, order);
+		if (page)
+			p = page_address(page);
+	}
 
-	if (!page) {
+	if (!p) {
 		prom_printf("SUN4V: Error, cannot allocate kbuf page.\n");
 		prom_halt();
 	}
 
-	*pa_ptr = __pa(page);
+	*pa_ptr = __pa(p);
 }
 
 static void __cpuinit init_cpu_send_mondo_info(struct trap_per_cpu *tb, int use_bootmem)
@@ -779,12 +802,12 @@ void __cpuinit sun4v_init_mondo_queues(int use_bootmem, int cpu, int alloc, int
 	struct trap_per_cpu *tb = &trap_block[cpu];
 
 	if (alloc) {
-		alloc_one_mondo(&tb->cpu_mondo_pa, use_bootmem);
-		alloc_one_mondo(&tb->dev_mondo_pa, use_bootmem);
-		alloc_one_mondo(&tb->resum_mondo_pa, use_bootmem);
-		alloc_one_kbuf(&tb->resum_kernel_buf_pa, use_bootmem);
-		alloc_one_mondo(&tb->nonresum_mondo_pa, use_bootmem);
-		alloc_one_kbuf(&tb->nonresum_kernel_buf_pa, use_bootmem);
+		alloc_one_mondo(&tb->cpu_mondo_pa, tb->cpu_mondo_qmask, use_bootmem);
+		alloc_one_mondo(&tb->dev_mondo_pa, tb->dev_mondo_qmask, use_bootmem);
+		alloc_one_mondo(&tb->resum_mondo_pa, tb->resum_qmask, use_bootmem);
+		alloc_one_kbuf(&tb->resum_kernel_buf_pa, tb->resum_qmask, use_bootmem);
+		alloc_one_mondo(&tb->nonresum_mondo_pa, tb->nonresum_qmask, use_bootmem);
+		alloc_one_kbuf(&tb->nonresum_kernel_buf_pa, tb->nonresum_qmask, use_bootmem);
 
 		init_cpu_send_mondo_info(tb, use_bootmem);
 	}