---

yaml
---
r: 13984
b: refs/heads/master
c: 9cf93d7
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c6bd2328434a3a6f8f6bc6f77f49c12ec966448a
+refs/heads/master: 9cf93d7b2f4516271ccf5b48f958bd474cf9dd67

trunk/Documentation/cciss.txt

@@ -133,3 +133,32 @@ hardware and it is important to prevent the kernel from attempting to directly
 access these devices too, as if the array controller were merely a SCSI 
 controller in the same way that we are allowing it to access SCSI tape drives.
 
+SCSI error handling for tape drives and medium changers
+-------------------------------------------------------
+
+The linux SCSI mid layer provides an error handling protocol which
+kicks into gear whenever a SCSI command fails to complete within a
+certain amount of time (which can vary depending on the command).
+The cciss driver participates in this protocol to some extent.  The
+normal protocol is a four step process.  First the device is told
+to abort the command.  If that doesn't work, the device is reset.
+If that doesn't work, the SCSI bus is reset.  If that doesn't work
+the host bus adapter is reset.  Because the cciss driver is a block
+driver as well as a SCSI driver and only the tape drives and medium
+changers are presented to the SCSI mid layer, and unlike more 
+straightforward SCSI drivers, disk i/o continues through the block
+side during the SCSI error recovery process, the cciss driver only
+implements the first two of these actions, aborting the command, and
+resetting the device.  Additionally, most tape drives will not oblige 
+in aborting commands, and sometimes it appears they will not even 
+obey a reset coommand, though in most circumstances they will.  In
+the case that the command cannot be aborted and the device cannot be 
+reset, the device will be set offline.
+
+In the event the error handling code is triggered and a tape drive is
+successfully reset or the tardy command is successfully aborted, the 
+tape drive may still not allow i/o to continue until some command
+is issued which positions the tape to a known position.  Typically you
+must rewind the tape (by issuing "mt -f /dev/st0 rewind" for example)
+before i/o can proceed again to a tape drive which was reset.
+

trunk/Documentation/early-userspace/README

@@ -28,7 +28,7 @@ the image from specifications.
 CPIO ARCHIVE method
 
 You can create a cpio archive that contains the early userspace image.
-Youre cpio archive should be specified in CONFIG_INITRAMFS_SOURCE and it
+Your cpio archive should be specified in CONFIG_INITRAMFS_SOURCE and it
 will be used directly.  Only a single cpio file may be specified in
 CONFIG_INITRAMFS_SOURCE and directory and file names are not allowed in
 combination with a cpio archive.

trunk/Documentation/scsi/00-INDEX

@@ -52,8 +52,6 @@ ppa.txt
 	- info on driver for IOmega zip drive
 qlogicfas.txt
 	- info on driver for QLogic FASxxx based adapters
-qlogicisp.txt
-	- info on driver for QLogic ISP 1020 based adapters
 scsi-generic.txt
 	- info on the sg driver for generic (non-disk/CD/tape) SCSI devices.
 scsi.txt

trunk/Documentation/scsi/qlogicfas.txt

@@ -11,8 +11,7 @@ Qlogic boards:
 	* IQ-PCI-10
 	* IQ-PCI-D
 
-is provided by the qlogicisp.c driver.  Check README.qlogicisp for
-details.
+is provided by the qla1280 driver.
 
 Nor does it support the PCI-Basic, which is supported by the
 'am53c974' driver.

trunk/Documentation/scsi/scsi_eh.txt

@@ -83,11 +83,11 @@ with the command.
  The timeout handler is scsi_times_out().  When a timeout occurs, this
 function
 
- 1. invokes optional hostt->eh_timedout() callback.  Return value can
+ 1. invokes optional hostt->eh_timed_out() callback.  Return value can
     be one of
 
     - EH_HANDLED
-	This indicates that eh_timedout() dealt with the timeout.  The
+	This indicates that eh_timed_out() dealt with the timeout.  The
 	scmd is passed to __scsi_done() and thus linked into per-cpu
 	scsi_done_q.  Normal command completion described in [1-2-1]
 	follows.
@@ -105,7 +105,7 @@ function
 	command will time out again.
 
     - EH_NOT_HANDLED
-	This is the same as when eh_timedout() callback doesn't exist.
+	This is the same as when eh_timed_out() callback doesn't exist.
 	Step #2 is taken.
 
  2. scsi_eh_scmd_add(scmd, SCSI_EH_CANCEL_CMD) is invoked for the
@@ -142,7 +142,7 @@ are linked on shost->eh_cmd_q.
  Note that this does not mean lower layers are quiescent.  If a LLDD
 completed a scmd with error status, the LLDD and lower layers are
 assumed to forget about the scmd at that point.  However, if a scmd
-has timed out, unless hostt->eh_timedout() made lower layers forget
+has timed out, unless hostt->eh_timed_out() made lower layers forget
 about the scmd, which currently no LLDD does, the command is still
 active as long as lower layers are concerned and completion could
 occur at any time.  Of course, all such completions are ignored as the

trunk/Documentation/scsi/scsi_mid_low_api.txt

@@ -346,7 +346,7 @@ Next, there is a movement to "outlaw" typedefs introducing synonyms for
 struct tags. Both can be still found in the SCSI subsystem, but
 the typedefs have been moved to a single file, scsi_typedefs.h to
 make their future removal easier, for example: 
-"typedef struct scsi_host_template Scsi_Host_Template;"
+"typedef struct scsi_cmnd Scsi_Cmnd;"
 
 Also, most C99 enhancements are encouraged to the extent they are supported
 by the relevant gcc compilers. So C99 style structure and array
@@ -718,7 +718,7 @@ void scsi_report_bus_reset(struct Scsi_Host * shost, int channel)
  *
  *      Defined in: drivers/scsi/scsi.c .
  **/
-int scsi_track_queue_full(Scsi_Device *sdev, int depth)
+int scsi_track_queue_full(struct scsi_device *sdev, int depth)
 
 
 /**

trunk/MAINTAINERS

@@ -1988,7 +1988,6 @@ PKTCDVD DRIVER
 P:	Peter Osterlund
 M:	petero2@telia.com
 L:	linux-kernel@vger.kernel.org
-L:	packet-writing@suse.com
 S:	Maintained
 
 POSIX CLOCKS and TIMERS

trunk/Makefile

@@ -168,7 +168,8 @@ KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)$(LOCALVERSION)
 
 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
 				  -e s/arm.*/arm/ -e s/sa110/arm/ \
-				  -e s/s390x/s390/ -e s/parisc64/parisc/ )
+				  -e s/s390x/s390/ -e s/parisc64/parisc/ \
+				  -e s/ppc64/powerpc/ )
 
 # Cross compiling and selecting different set of gcc/bin-utils
 # ---------------------------------------------------------------------------

trunk/arch/ia64/Kconfig

@@ -164,6 +164,19 @@ config IA64_PAGE_SIZE_64KB
 
 endchoice
 
+choice
+	prompt "Page Table Levels"
+	default PGTABLE_3
+
+config PGTABLE_3
+	bool "3 Levels"
+
+config PGTABLE_4
+	depends on !IA64_PAGE_SIZE_64KB
+	bool "4 Levels"
+
+endchoice
+
 source kernel/Kconfig.hz
 
 config IA64_BRL_EMU

trunk/arch/ia64/configs/sn2_defconfig

@@ -80,6 +80,8 @@ CONFIG_MCKINLEY=y
 # CONFIG_IA64_PAGE_SIZE_8KB is not set
 CONFIG_IA64_PAGE_SIZE_16KB=y
 # CONFIG_IA64_PAGE_SIZE_64KB is not set
+# CONFIG_PGTABLE_3 is not set
+CONFIG_PGTABLE_4=y
 # CONFIG_HZ_100 is not set
 CONFIG_HZ_250=y
 # CONFIG_HZ_1000 is not set

trunk/arch/ia64/defconfig

@@ -82,6 +82,8 @@ CONFIG_MCKINLEY=y
 # CONFIG_IA64_PAGE_SIZE_8KB is not set
 CONFIG_IA64_PAGE_SIZE_16KB=y
 # CONFIG_IA64_PAGE_SIZE_64KB is not set
+CONFIG_PGTABLE_3=y
+# CONFIG_PGTABLE_4 is not set
 # CONFIG_HZ_100 is not set
 CONFIG_HZ_250=y
 # CONFIG_HZ_1000 is not set

trunk/arch/ia64/kernel/ivt.S

@@ -114,7 +114,7 @@ ENTRY(vhpt_miss)
 	shl r21=r16,3				// shift bit 60 into sign bit
 	shr.u r17=r16,61			// get the region number into r17
 	;;
-	shr r22=r21,3
+	shr.u r22=r21,3
 #ifdef CONFIG_HUGETLB_PAGE
 	extr.u r26=r25,2,6
 	;;
@@ -140,20 +140,34 @@ ENTRY(vhpt_miss)
 (p6)	dep r17=r18,r19,3,(PAGE_SHIFT-3)	// r17=PTA + IFA(33,42)*8
 (p7)	dep r17=r18,r17,3,(PAGE_SHIFT-6)	// r17=PTA + (((IFA(61,63) << 7) | IFA(33,39))*8)
 	cmp.eq p7,p6=0,r21			// unused address bits all zeroes?
-	shr.u r18=r22,PMD_SHIFT			// shift L2 index into position
+#ifdef CONFIG_PGTABLE_4
+	shr.u r28=r22,PUD_SHIFT			// shift L2 index into position
+#else
+	shr.u r18=r22,PMD_SHIFT			// shift L3 index into position
+#endif
 	;;
 	ld8 r17=[r17]				// fetch the L1 entry (may be 0)
 	;;
 (p7)	cmp.eq p6,p7=r17,r0			// was L1 entry NULL?
-	dep r17=r18,r17,3,(PAGE_SHIFT-3)	// compute address of L2 page table entry
+#ifdef CONFIG_PGTABLE_4
+	dep r28=r28,r17,3,(PAGE_SHIFT-3)	// compute address of L2 page table entry
+	;;
+	shr.u r18=r22,PMD_SHIFT			// shift L3 index into position
+(p7)	ld8 r29=[r28]				// fetch the L2 entry (may be 0)
 	;;
-(p7)	ld8 r20=[r17]				// fetch the L2 entry (may be 0)
-	shr.u r19=r22,PAGE_SHIFT		// shift L3 index into position
+(p7)	cmp.eq.or.andcm p6,p7=r29,r0		// was L2 entry NULL?
+	dep r17=r18,r29,3,(PAGE_SHIFT-3)	// compute address of L3 page table entry
+#else
+	dep r17=r18,r17,3,(PAGE_SHIFT-3)	// compute address of L3 page table entry
+#endif
 	;;
-(p7)	cmp.eq.or.andcm p6,p7=r20,r0		// was L2 entry NULL?
-	dep r21=r19,r20,3,(PAGE_SHIFT-3)	// compute address of L3 page table entry
+(p7)	ld8 r20=[r17]				// fetch the L3 entry (may be 0)
+	shr.u r19=r22,PAGE_SHIFT		// shift L4 index into position
 	;;
-(p7)	ld8 r18=[r21]				// read the L3 PTE
+(p7)	cmp.eq.or.andcm p6,p7=r20,r0		// was L3 entry NULL?
+	dep r21=r19,r20,3,(PAGE_SHIFT-3)	// compute address of L4 page table entry
+	;;
+(p7)	ld8 r18=[r21]				// read the L4 PTE
 	mov r19=cr.isr				// cr.isr bit 0 tells us if this is an insn miss
 	;;
 (p7)	tbit.z p6,p7=r18,_PAGE_P_BIT		// page present bit cleared?
@@ -192,14 +206,21 @@ ENTRY(vhpt_miss)
 	 * between reading the pagetable and the "itc".  If so, flush the entry we
 	 * inserted and retry.
 	 */
-	ld8 r25=[r21]				// read L3 PTE again
-	ld8 r26=[r17]				// read L2 entry again
+	ld8 r25=[r21]				// read L4 entry again
+	ld8 r26=[r17]				// read L3 PTE again
+#ifdef CONFIG_PGTABLE_4
+	ld8 r18=[r28]				// read L2 entry again
+#endif
+	cmp.ne p6,p7=r0,r0
 	;;
-	cmp.ne p6,p7=r26,r20			// did L2 entry change
+	cmp.ne.or.andcm p6,p7=r26,r20		// did L3 entry change
+#ifdef CONFIG_PGTABLE_4
+	cmp.ne.or.andcm p6,p7=r29,r18		// did L4 PTE change
+#endif
 	mov r27=PAGE_SHIFT<<2
 	;;
 (p6)	ptc.l r22,r27				// purge PTE page translation
-(p7)	cmp.ne.or.andcm p6,p7=r25,r18		// did L3 PTE change
+(p7)	cmp.ne.or.andcm p6,p7=r25,r18		// did L4 PTE change
 	;;
 (p6)	ptc.l r16,r27				// purge translation
 #endif
@@ -432,18 +453,30 @@ ENTRY(nested_dtlb_miss)
 (p6)	dep r17=r18,r19,3,(PAGE_SHIFT-3)	// r17=PTA + IFA(33,42)*8
 (p7)	dep r17=r18,r17,3,(PAGE_SHIFT-6)	// r17=PTA + (((IFA(61,63) << 7) | IFA(33,39))*8)
 	cmp.eq p7,p6=0,r21			// unused address bits all zeroes?
-	shr.u r18=r22,PMD_SHIFT			// shift L2 index into position
+#ifdef CONFIG_PGTABLE_4
+	shr.u r18=r22,PUD_SHIFT			// shift L2 index into position
+#else
+	shr.u r18=r22,PMD_SHIFT			// shift L3 index into position
+#endif
 	;;
 	ld8 r17=[r17]				// fetch the L1 entry (may be 0)
 	;;
 (p7)	cmp.eq p6,p7=r17,r0			// was L1 entry NULL?
 	dep r17=r18,r17,3,(PAGE_SHIFT-3)	// compute address of L2 page table entry
 	;;
+#ifdef CONFIG_PGTABLE_4
 (p7)	ld8 r17=[r17]				// fetch the L2 entry (may be 0)
-	shr.u r19=r22,PAGE_SHIFT		// shift L3 index into position
+	shr.u r18=r22,PMD_SHIFT			// shift L3 index into position
 	;;
 (p7)	cmp.eq.or.andcm p6,p7=r17,r0		// was L2 entry NULL?
-	dep r17=r19,r17,3,(PAGE_SHIFT-3)	// compute address of L3 page table entry
+	dep r17=r18,r17,3,(PAGE_SHIFT-3)	// compute address of L2 page table entry
+	;;
+#endif
+(p7)	ld8 r17=[r17]				// fetch the L3 entry (may be 0)
+	shr.u r19=r22,PAGE_SHIFT		// shift L4 index into position
+	;;
+(p7)	cmp.eq.or.andcm p6,p7=r17,r0		// was L3 entry NULL?
+	dep r17=r19,r17,3,(PAGE_SHIFT-3)	// compute address of L4 page table entry
 (p6)	br.cond.spnt page_fault
 	mov b0=r30
 	br.sptk.many b0				// return to continuation point