From 232486e1e9f34889424b68ee6270440b554479a2 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Fri, 12 Feb 2010 12:03:45 -0800
Subject: [PATCH 1/4] sparc64: Tighten checks in kstack_valid().

The kernel stack pointer is invalid if it is not 16-byte
aligned.

Based upon a report by Meelis Roos <mroos@linux.ee>

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/kernel/kstack.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/sparc/kernel/kstack.h b/arch/sparc/kernel/kstack.h
index 4248d969272f..5247283d1c03 100644
--- a/arch/sparc/kernel/kstack.h
+++ b/arch/sparc/kernel/kstack.h
@@ -11,6 +11,10 @@ static inline bool kstack_valid(struct thread_info *tp, unsigned long sp)
 {
 	unsigned long base = (unsigned long) tp;
 
+	/* Stack pointer must be 16-byte aligned.  */
+	if (sp & (16UL - 1))
+		return false;
+
 	if (sp >= (base + sizeof(struct thread_info)) &&
 	    sp <= (base + THREAD_SIZE - sizeof(struct sparc_stackf)))
 		return true;

From 172d2d0041fdd4f3617dbdff8296bf279db3d5fb Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 17 Feb 2010 16:42:08 -0800
Subject: [PATCH 2/4] sparc64: Sync of_create_pci_dev() with
 drivers/pci/probe.c changes.

Mirrors powerpc commits bb209c8287d2d55ec4a67e3933346e0a3ee0da76
("powerpc/pci: Add calls to set_pcie_port_type() and set_pcie_hotplug_bridge()")
and 26b4a0ca46985ae9586c194f7859f3838b1230f8
("powerpc/pci: Add missing hookup to pci_slot")

We also need to initialize ->dma_mask explicitly here too.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/kernel/pci.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 539e83f8e087..592b03d85167 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -247,6 +247,7 @@ static struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
 					 struct pci_bus *bus, int devfn)
 {
 	struct dev_archdata *sd;
+	struct pci_slot *slot;
 	struct of_device *op;
 	struct pci_dev *dev;
 	const char *type;
@@ -286,6 +287,11 @@ static struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
 	dev->dev.bus = &pci_bus_type;
 	dev->devfn = devfn;
 	dev->multifunction = 0;		/* maybe a lie? */
+	set_pcie_port_type(dev);
+
+	list_for_each_entry(slot, &dev->bus->slots, list)
+		if (PCI_SLOT(dev->devfn) == slot->number)
+			dev->slot = slot;
 
 	dev->vendor = of_getintprop_default(node, "vendor-id", 0xffff);
 	dev->device = of_getintprop_default(node, "device-id", 0xffff);
@@ -322,6 +328,7 @@ static struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
 
 	dev->current_state = 4;		/* unknown power state */
 	dev->error_state = pci_channel_io_normal;
+	dev->dma_mask = 0xffffffff;
 
 	if (!strcmp(node->name, "pci")) {
 		/* a PCI-PCI bridge */

From d7ecfb3c2aa155c9f6152ebe91de92067d16ba6e Mon Sep 17 00:00:00 2001
From: Kristoffer Glembo <kristoffer@gaisler.com>
Date: Mon, 15 Feb 2010 16:10:28 +0100
Subject: [PATCH 3/4] sparc: Fix incorrect comparison in of_bus_ambapp_match()

Use type instead of name in comparison.

Signed-off-by: Kristoffer Glembo <kristoffer@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/kernel/of_device_32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sparc/kernel/of_device_32.c b/arch/sparc/kernel/of_device_32.c
index 4c26eb59e742..53a58b349849 100644
--- a/arch/sparc/kernel/of_device_32.c
+++ b/arch/sparc/kernel/of_device_32.c
@@ -105,7 +105,7 @@ static unsigned long of_bus_sbus_get_flags(const u32 *addr, unsigned long flags)
 
 static int of_bus_ambapp_match(struct device_node *np)
 {
-	return !strcmp(np->name, "ambapp");
+	return !strcmp(np->type, "ambapp");
 }
 
 static void of_bus_ambapp_count_cells(struct device_node *child,

From 1f474646fdc36b457606bbcd6a3592e6cbd31ac4 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Fri, 19 Feb 2010 15:19:52 -0800
Subject: [PATCH 4/4] sparc64: Fix sun4u execute bit check in TSB I-TLB load.

Thanks to testcase and report from Brad Spengler:

--------------------
#include <stdio.h>

typedef int (* _wee)(void);

int main(void)
{
        char buf[8] = { '\x81', '\xc7', '\xe0', '\x08', '\x81', '\xe8',
                        '\x00', '\x00' };
        _wee wee;
        printf("%p\n", &buf);
        wee = (_wee)&buf;
        wee();

        return 0;
}
--------------------

TSB I-tlb load code tries to use andcc to check the _PAGE_EXEC_4U bit,
but that's bit 12 so it gets sign extended all the way up to bit 63
and the test nearly always passes as a result.

Use sethi to fix the bug.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/kernel/tsb.S | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S
index 8c91d9b29a2f..db15d123f054 100644
--- a/arch/sparc/kernel/tsb.S
+++ b/arch/sparc/kernel/tsb.S
@@ -191,10 +191,12 @@ tsb_dtlb_load:
 
 tsb_itlb_load:
 	/* Executable bit must be set.  */
-661:	andcc		%g5, _PAGE_EXEC_4U, %g0
-	.section	.sun4v_1insn_patch, "ax"
+661:	sethi		%hi(_PAGE_EXEC_4U), %g4
+	andcc		%g5, %g4, %g0
+	.section	.sun4v_2insn_patch, "ax"
 	.word		661b
 	andcc		%g5, _PAGE_EXEC_4V, %g0
+	nop
 	.previous
 
 	be,pn		%xcc, tsb_do_fault