manual update from upstream:

Applied Al's change 06a544971fad0992fe8b92c5647538d573089dd4
to new location of swiotlb.c

Signed-off-by: Tony Luck <tony.luck@intel.com>

8 files changed, 43 insertions, 12 deletions

diff --git a/include/asm-x86_64/dma-mapping.h b/include/asm-x86_64/dma-mapping.h
index 45ca88c875c0..36d16dfbac88 100644
--- a/include/asm-x86_64/dma-mapping.h
+++ b/include/asm-x86_64/dma-mapping.h
@@ -17,7 +17,7 @@ extern dma_addr_t bad_dma_address;
 	(swiotlb ? swiotlb_dma_mapping_error(x) : ((x) == bad_dma_address))
 
 void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
-			 unsigned gfp);
+			 gfp_t gfp);
 void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 			 dma_addr_t dma_handle);
 
diff --git a/include/asm-x86_64/mtrr.h b/include/asm-x86_64/mtrr.h
index c5959d6418bb..66ac1c0f27e1 100644
--- a/include/asm-x86_64/mtrr.h
+++ b/include/asm-x86_64/mtrr.h
@@ -25,6 +25,7 @@
 
 #include <linux/config.h>
 #include <linux/ioctl.h>
+#include <linux/compat.h>
 
 #define	MTRR_IOCTL_BASE	'M'
 
@@ -105,4 +106,36 @@ static __inline__ int mtrr_del_page (int reg, unsigned long base,
 
 #endif
 
+#ifdef CONFIG_COMPAT
+
+struct mtrr_sentry32
+{
+    compat_ulong_t base;    /*  Base address     */
+    compat_uint_t size;    /*  Size of region   */
+    compat_uint_t type;     /*  Type of region   */
+};
+
+struct mtrr_gentry32
+{
+    compat_ulong_t regnum;   /*  Register number  */
+    compat_uint_t base;    /*  Base address     */
+    compat_uint_t size;    /*  Size of region   */
+    compat_uint_t type;     /*  Type of region   */
+};
+
+#define MTRR_IOCTL_BASE 'M'
+
+#define MTRRIOC32_ADD_ENTRY        _IOW(MTRR_IOCTL_BASE,  0, struct mtrr_sentry32)
+#define MTRRIOC32_SET_ENTRY        _IOW(MTRR_IOCTL_BASE,  1, struct mtrr_sentry32)
+#define MTRRIOC32_DEL_ENTRY        _IOW(MTRR_IOCTL_BASE,  2, struct mtrr_sentry32)
+#define MTRRIOC32_GET_ENTRY        _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32)
+#define MTRRIOC32_KILL_ENTRY       _IOW(MTRR_IOCTL_BASE,  4, struct mtrr_sentry32)
+#define MTRRIOC32_ADD_PAGE_ENTRY   _IOW(MTRR_IOCTL_BASE,  5, struct mtrr_sentry32)
+#define MTRRIOC32_SET_PAGE_ENTRY   _IOW(MTRR_IOCTL_BASE,  6, struct mtrr_sentry32)
+#define MTRRIOC32_DEL_PAGE_ENTRY   _IOW(MTRR_IOCTL_BASE,  7, struct mtrr_sentry32)
+#define MTRRIOC32_GET_PAGE_ENTRY   _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32)
+#define MTRRIOC32_KILL_PAGE_ENTRY  _IOW(MTRR_IOCTL_BASE,  9, struct mtrr_sentry32)
+
+#endif /* CONFIG_COMPAT */
+
 #endif  /*  _LINUX_MTRR_H  */
diff --git a/include/asm-x86_64/pci.h b/include/asm-x86_64/pci.h
index 5a82a6762c21..eeb3088a1c9e 100644
--- a/include/asm-x86_64/pci.h
+++ b/include/asm-x86_64/pci.h
@@ -50,10 +50,10 @@ extern int iommu_setup(char *opt);
  * address space.  The networking and block device layers use
  * this boolean for bounce buffer decisions
  *
- * On x86-64 it mostly equals, but we set it to zero to tell some subsystems
- * that an hard or soft IOMMU is available.
+ * On AMD64 it mostly equals, but we set it to zero to tell some subsystems
+ * that an IOMMU is available.
  */
-#define PCI_DMA_BUS_IS_PHYS 0
+#define PCI_DMA_BUS_IS_PHYS	(no_iommu ? 1 : 0)
 
 /*
  * x86-64 always supports DAC, but sometimes it is useful to force
diff --git a/include/asm-x86_64/pgtable.h b/include/asm-x86_64/pgtable.h
index dd8711ecaf2f..7a07196a7202 100644
--- a/include/asm-x86_64/pgtable.h
+++ b/include/asm-x86_64/pgtable.h
@@ -318,8 +318,6 @@ static inline int pmd_large(pmd_t pte) {
  * and a page entry and page directory to the page they refer to.
  */
 
-#define page_pte(page) page_pte_prot(page, __pgprot(0))
-
 /*
  * Level 4 access.
  */
diff --git a/include/asm-x86_64/rwsem.h b/include/asm-x86_64/rwsem.h
index c002175b6e82..46077e9c1910 100644
--- a/include/asm-x86_64/rwsem.h
+++ b/include/asm-x86_64/rwsem.h
@@ -274,5 +274,10 @@ LOCK_PREFIX	"xaddl %0,(%2)"
 	return tmp+delta;
 }
 
+static inline int rwsem_is_locked(struct rw_semaphore *sem)
+{
+	return (sem->count != 0);
+}
+
 #endif /* __KERNEL__ */
 #endif /* _X8664_RWSEM_H */
diff --git a/include/asm-x86_64/semaphore.h b/include/asm-x86_64/semaphore.h
index f325e39bf3b9..a389aa6fe80f 100644
--- a/include/asm-x86_64/semaphore.h
+++ b/include/asm-x86_64/semaphore.h
@@ -56,9 +56,6 @@ struct semaphore {
 	.wait		= __WAIT_QUEUE_HEAD_INITIALIZER((name).wait)	\
 }
 
-#define __MUTEX_INITIALIZER(name) \
-	__SEMAPHORE_INITIALIZER(name,1)
-
 #define __DECLARE_SEMAPHORE_GENERIC(name,count) \
 	struct semaphore name = __SEMAPHORE_INITIALIZER(name,count)
 
diff --git a/include/asm-x86_64/swiotlb.h b/include/asm-x86_64/swiotlb.h
index 9b011dd8d19d..dddf1b218681 100644
--- a/include/asm-x86_64/swiotlb.h
+++ b/include/asm-x86_64/swiotlb.h
@@ -35,7 +35,7 @@ extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
 			 int nents, int direction);
 extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr);
 extern void *swiotlb_alloc_coherent (struct device *hwdev, size_t size,
-				     dma_addr_t *dma_handle, int flags);
+				     dma_addr_t *dma_handle, gfp_t flags);
 extern void swiotlb_free_coherent (struct device *hwdev, size_t size,
 				   void *vaddr, dma_addr_t dma_handle);
 
diff --git a/include/asm-x86_64/unistd.h b/include/asm-x86_64/unistd.h
index 11ba931cf82f..3c494b65d33a 100644
--- a/include/asm-x86_64/unistd.h
+++ b/include/asm-x86_64/unistd.h
@@ -780,8 +780,6 @@ asmlinkage long sys_pipe(int *fildes);
 #include <linux/types.h>
 #include <asm/ptrace.h>
 
-asmlinkage long sys_ptrace(long request, long pid,
-				unsigned long addr, long data);
 asmlinkage long sys_iopl(unsigned int level, struct pt_regs *regs);
 asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on);
 struct sigaction;