Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull powerpc fixes from Benjamin Herrenschmidt:
 "Here's a handful of powerpc patches, a couple of regression fixes for
  problems introduced in the main batch in this merge window, a couple
  of defconfig updates, and some trivials.

  The radeonfb one is something that was long standing in SLES which I
  forgot to pickup earlier."

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/ftrace: Trace function graph entry before updating index
  radeonfb: Add quirk for the graphics adapter in some JSxx
  powerpc: Lack of firmware flash support is not an error
  powerpc: Enable pseries hardware RNG and crypto modules
  powerpc: Update g5_defconfig
  powerpc/kvm/bookehv: Fix build regression
  powerpc: Set stack limit properly in crit_transfer_to_handler

8 files changed, 128 insertions, 124 deletions

diff --git a/arch/powerpc/configs/g5_defconfig b/arch/powerpc/configs/g5_defconfig
index 07b7f2af2dca..15130066e5e2 100644
--- a/arch/powerpc/configs/g5_defconfig
+++ b/arch/powerpc/configs/g5_defconfig
@@ -1,10 +1,8 @@
-CONFIG_PPC64=y
-CONFIG_ALTIVEC=y
-CONFIG_SMP=y
-CONFIG_NR_CPUS=4
 CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_BLK_DEV_INITRD=y
@@ -15,16 +13,15 @@ CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODVERSIONS=y
 CONFIG_MODULE_SRCVERSION_ALL=y
-# CONFIG_PPC_PSERIES is not set
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_MAC_PARTITION=y
+CONFIG_SMP=y
+CONFIG_NR_CPUS=4
+CONFIG_KEXEC=y
+# CONFIG_RELOCATABLE is not set
 CONFIG_CPU_FREQ=y
 CONFIG_CPU_FREQ_GOV_POWERSAVE=y
 CONFIG_CPU_FREQ_GOV_USERSPACE=y
-CONFIG_CPU_FREQ_PMAC64=y
-CONFIG_NO_HZ=y
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_KEXEC=y
-CONFIG_IRQ_ALL_CPUS=y
-# CONFIG_MIGRATION is not set
 CONFIG_PCI_MSI=y
 CONFIG_NET=y
 CONFIG_PACKET=y
@@ -52,7 +49,6 @@ CONFIG_NF_CT_NETLINK=m
 CONFIG_NF_CONNTRACK_IPV4=m
 CONFIG_IP_NF_QUEUE=m
 CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
-CONFIG_PROC_DEVICETREE=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_NBD=m
 CONFIG_BLK_DEV_RAM=y
@@ -60,8 +56,6 @@ CONFIG_BLK_DEV_RAM_SIZE=65536
 CONFIG_CDROM_PKTCDVD=m
 CONFIG_IDE=y
 CONFIG_BLK_DEV_IDECD=y
-CONFIG_BLK_DEV_IDE_PMAC=y
-CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_CHR_DEV_ST=y
 CONFIG_BLK_DEV_SR=y
@@ -85,33 +79,24 @@ CONFIG_DM_CRYPT=m
 CONFIG_DM_SNAPSHOT=m
 CONFIG_DM_MIRROR=m
 CONFIG_DM_ZERO=m
-CONFIG_IEEE1394=y
-CONFIG_IEEE1394_OHCI1394=y
-CONFIG_IEEE1394_SBP2=m
-CONFIG_IEEE1394_ETH1394=m
-CONFIG_IEEE1394_RAWIO=y
-CONFIG_IEEE1394_VIDEO1394=m
-CONFIG_IEEE1394_DV1394=m
-CONFIG_ADB_PMU=y
-CONFIG_PMAC_SMU=y
+CONFIG_MACINTOSH_DRIVERS=y
 CONFIG_MAC_EMUMOUSEBTN=y
-CONFIG_THERM_PM72=y
-CONFIG_WINDFARM=y
-CONFIG_WINDFARM_PM81=y
-CONFIG_WINDFARM_PM91=y
-CONFIG_WINDFARM_PM112=y
-CONFIG_WINDFARM_PM121=y
 CONFIG_NETDEVICES=y
-CONFIG_DUMMY=m
 CONFIG_BONDING=m
-CONFIG_TUN=m
-CONFIG_NET_ETHERNET=y
+CONFIG_DUMMY=m
 CONFIG_MII=y
-CONFIG_SUNGEM=y
+CONFIG_TUN=m
 CONFIG_ACENIC=m
 CONFIG_ACENIC_OMIT_TIGON_I=y
-CONFIG_E1000=y
 CONFIG_TIGON3=y
+CONFIG_E1000=y
+CONFIG_SUNGEM=y
+CONFIG_PPP=m
+CONFIG_PPP_BSDCOMP=m
+CONFIG_PPP_DEFLATE=m
+CONFIG_PPPOE=m
+CONFIG_PPP_ASYNC=m
+CONFIG_PPP_SYNC_TTY=m
 CONFIG_USB_CATC=m
 CONFIG_USB_KAWETH=m
 CONFIG_USB_PEGASUS=m
@@ -121,36 +106,24 @@ CONFIG_USB_USBNET=m
 # CONFIG_USB_NET_NET1080 is not set
 # CONFIG_USB_NET_CDC_SUBSET is not set
 # CONFIG_USB_NET_ZAURUS is not set
-CONFIG_PPP=m
-CONFIG_PPP_ASYNC=m
-CONFIG_PPP_SYNC_TTY=m
-CONFIG_PPP_DEFLATE=m
-CONFIG_PPP_BSDCOMP=m
-CONFIG_PPPOE=m
 # CONFIG_INPUT_MOUSEDEV_PSAUX is not set
 CONFIG_INPUT_JOYDEV=m
 CONFIG_INPUT_EVDEV=y
-# CONFIG_KEYBOARD_ATKBD is not set
 # CONFIG_MOUSE_PS2 is not set
-# CONFIG_SERIO_I8042 is not set
 # CONFIG_SERIO_SERPORT is not set
+CONFIG_VT_HW_CONSOLE_BINDING=y
 # CONFIG_HW_RANDOM is not set
 CONFIG_GEN_RTC=y
 CONFIG_RAW_DRIVER=y
 CONFIG_I2C_CHARDEV=y
 # CONFIG_HWMON is not set
-CONFIG_AGP=m
-CONFIG_AGP_UNINORTH=m
+CONFIG_AGP=y
+CONFIG_DRM=y
+CONFIG_DRM_NOUVEAU=y
 CONFIG_VIDEO_OUTPUT_CONTROL=m
-CONFIG_FB=y
 CONFIG_FIRMWARE_EDID=y
 CONFIG_FB_TILEBLITTING=y
-CONFIG_FB_OF=y
-CONFIG_FB_NVIDIA=y
-CONFIG_FB_NVIDIA_I2C=y
 CONFIG_FB_RADEON=y
-# CONFIG_VGA_CONSOLE is not set
-CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
 CONFIG_SOUND=m
 CONFIG_SND=m
@@ -158,15 +131,7 @@ CONFIG_SND_SEQUENCER=m
 CONFIG_SND_MIXER_OSS=m
 CONFIG_SND_PCM_OSS=m
 CONFIG_SND_SEQUENCER_OSS=y
-CONFIG_SND_POWERMAC=m
-CONFIG_SND_AOA=m
-CONFIG_SND_AOA_FABRIC_LAYOUT=m
-CONFIG_SND_AOA_ONYX=m
-CONFIG_SND_AOA_TAS=m
-CONFIG_SND_AOA_TOONIE=m
 CONFIG_SND_USB_AUDIO=m
-CONFIG_HID_PID=y
-CONFIG_USB_HIDDEV=y
 CONFIG_HID_GYRATION=y
 CONFIG_LOGITECH_FF=y
 CONFIG_HID_PANTHERLORD=y
@@ -174,13 +139,12 @@ CONFIG_HID_PETALYNX=y
 CONFIG_HID_SAMSUNG=y
 CONFIG_HID_SONY=y
 CONFIG_HID_SUNPLUS=y
+CONFIG_HID_PID=y
+CONFIG_USB_HIDDEV=y
 CONFIG_USB=y
-CONFIG_USB_DEVICEFS=y
 CONFIG_USB_MON=y
 CONFIG_USB_EHCI_HCD=y
-# CONFIG_USB_EHCI_HCD_PPC_OF is not set
 CONFIG_USB_OHCI_HCD=y
-CONFIG_USB_OHCI_HCD_PPC_OF_BE=y
 CONFIG_USB_ACM=m
 CONFIG_USB_PRINTER=y
 CONFIG_USB_STORAGE=y
@@ -244,8 +208,6 @@ CONFIG_REISERFS_FS_POSIX_ACL=y
 CONFIG_REISERFS_FS_SECURITY=y
 CONFIG_XFS_FS=m
 CONFIG_XFS_POSIX_ACL=y
-CONFIG_INOTIFY=y
-CONFIG_AUTOFS_FS=m
 CONFIG_ISO9660_FS=y
 CONFIG_JOLIET=y
 CONFIG_ZISOFS=y
@@ -259,14 +221,12 @@ CONFIG_HFS_FS=m
 CONFIG_HFSPLUS_FS=m
 CONFIG_CRAMFS=y
 CONFIG_NFS_FS=y
-CONFIG_NFS_V3=y
 CONFIG_NFS_V3_ACL=y
 CONFIG_NFS_V4=y
 CONFIG_NFSD=y
 CONFIG_NFSD_V3_ACL=y
 CONFIG_NFSD_V4=y
 CONFIG_CIFS=m
-CONFIG_PARTITION_ADVANCED=y
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_CODEPAGE_1250=y
 CONFIG_NLS_CODEPAGE_1251=y
@@ -274,29 +234,23 @@ CONFIG_NLS_ASCII=y
 CONFIG_NLS_ISO8859_1=y
 CONFIG_NLS_ISO8859_15=y
 CONFIG_NLS_UTF8=y
-CONFIG_CRC_T10DIF=y
-CONFIG_LIBCRC32C=m
 CONFIG_MAGIC_SYSRQ=y
+# CONFIG_UNUSED_SYMBOLS is not set
 CONFIG_DEBUG_FS=y
 CONFIG_DEBUG_KERNEL=y
 CONFIG_DEBUG_MUTEXES=y
-# CONFIG_RCU_CPU_STALL_DETECTOR is not set
 CONFIG_LATENCYTOP=y
-CONFIG_SYSCTL_SYSCALL_CHECK=y
-CONFIG_BOOTX_TEXT=y
+CONFIG_STRICT_DEVMEM=y
 CONFIG_CRYPTO_NULL=m
 CONFIG_CRYPTO_TEST=m
-CONFIG_CRYPTO_ECB=m
 CONFIG_CRYPTO_PCBC=m
 CONFIG_CRYPTO_HMAC=y
-CONFIG_CRYPTO_MD4=m
 CONFIG_CRYPTO_MICHAEL_MIC=m
 CONFIG_CRYPTO_SHA256=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_AES=m
 CONFIG_CRYPTO_ANUBIS=m
-CONFIG_CRYPTO_ARC4=m
 CONFIG_CRYPTO_BLOWFISH=m
 CONFIG_CRYPTO_CAST5=m
 CONFIG_CRYPTO_CAST6=m
@@ -306,3 +260,6 @@ CONFIG_CRYPTO_TEA=m
 CONFIG_CRYPTO_TWOFISH=m
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set
+# CONFIG_VIRTUALIZATION is not set
+CONFIG_CRC_T10DIF=y
+CONFIG_LIBCRC32C=m
diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig
index f2fe0c2b41e4..db27c82e0542 100644
--- a/arch/powerpc/configs/ppc64_defconfig
+++ b/arch/powerpc/configs/ppc64_defconfig
@@ -279,7 +279,8 @@ CONFIG_HVC_RTAS=y
 CONFIG_HVC_BEAT=y
 CONFIG_HVCS=m
 CONFIG_IBM_BSR=m
-# CONFIG_HW_RANDOM is not set
+CONFIG_HW_RANDOM=m
+CONFIG_HW_RANDOM_PSERIES=m
 CONFIG_RAW_DRIVER=y
 CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_AMD8111=y
@@ -485,7 +486,8 @@ CONFIG_CRYPTO_TEA=m
 CONFIG_CRYPTO_TWOFISH=m
 CONFIG_CRYPTO_LZO=m
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
-# CONFIG_CRYPTO_HW is not set
+CONFIG_CRYPTO_HW=y
+CONFIG_CRYPTO_DEV_NX=m
 CONFIG_VIRTUALIZATION=y
 CONFIG_KVM_BOOK3S_64=m
 CONFIG_KVM_BOOK3S_64_HV=y
diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index 187fb8d53605..1f65b3c9b59a 100644
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -226,7 +226,8 @@ CONFIG_HVC_CONSOLE=y
 CONFIG_HVC_RTAS=y
 CONFIG_HVCS=m
 CONFIG_IBM_BSR=m
-# CONFIG_HW_RANDOM is not set
+CONFIG_HW_RANDOM=m
+CONFIG_HW_RANDOM_PSERIES=m
 CONFIG_GEN_RTC=y
 CONFIG_RAW_DRIVER=y
 CONFIG_MAX_RAW_DEVS=1024
@@ -367,7 +368,8 @@ CONFIG_CRYPTO_TEA=m
 CONFIG_CRYPTO_TWOFISH=m
 CONFIG_CRYPTO_LZO=m
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
-# CONFIG_CRYPTO_HW is not set
+CONFIG_CRYPTO_HW=y
+CONFIG_CRYPTO_DEV_NX=m
 CONFIG_VIRTUALIZATION=y
 CONFIG_KVM_BOOK3S_64=m
 CONFIG_KVM_BOOK3S_64_HV=y
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 5207d5a405e2..ead5016b02d0 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -89,10 +89,14 @@ crit_transfer_to_handler:
         mfspr   r0,SPRN_SRR1
         stw     r0,_SRR1(r11)
 
+        /* set the stack limit to the current stack
+         * and set the limit to protect the thread_info
+         * struct
+         */
         mfspr   r8,SPRN_SPRG_THREAD
         lwz     r0,KSP_LIMIT(r8)
         stw     r0,SAVED_KSP_LIMIT(r11)
-        CURRENT_THREAD_INFO(r0, r1)
+        rlwimi  r0,r1,0,0,(31-THREAD_SHIFT)
         stw     r0,KSP_LIMIT(r8)
         /* fall through */
 #endif
@@ -109,10 +113,14 @@ crit_transfer_to_handler:
         mfspr   r0,SPRN_SRR1
         stw     r0,crit_srr1@l(0)
 
+        /* set the stack limit to the current stack
+         * and set the limit to protect the thread_info
+         * struct
+         */
         mfspr   r8,SPRN_SPRG_THREAD
         lwz     r0,KSP_LIMIT(r8)
         stw     r0,saved_ksp_limit@l(0)
-        CURRENT_THREAD_INFO(r0, r1)
+        rlwimi  r0,r1,0,0,(31-THREAD_SHIFT)
         stw     r0,KSP_LIMIT(r8)
         /* fall through */
 #endif
diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c
index 91b46b7f6f0d..1fb78561096a 100644
--- a/arch/powerpc/kernel/ftrace.c
+++ b/arch/powerpc/kernel/ftrace.c
@@ -630,18 +630,17 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
                 return;
         }
 
-        if (ftrace_push_return_trace(old, self_addr, &trace.depth, 0) == -EBUSY) {
-                *parent = old;
-                return;
-        }
-
         trace.func = self_addr;
+        trace.depth = current->curr_ret_stack + 1;
 
         /* Only trace if the calling function expects to */
         if (!ftrace_graph_entry(&trace)) {
-                current->curr_ret_stack--;
                 *parent = old;
+                return;
         }
+
+        if (ftrace_push_return_trace(old, self_addr, &trace.depth, 0) == -EBUSY)
+                *parent = old;
 }
 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */
 
diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c
index 4174b4b23246..2c0ee6405633 100644
--- a/arch/powerpc/kernel/rtas_flash.c
+++ b/arch/powerpc/kernel/rtas_flash.c
@@ -709,7 +709,7 @@ static int __init rtas_flash_init(void)
 
         if (rtas_token("ibm,update-flash-64-and-reboot") ==
                        RTAS_UNKNOWN_SERVICE) {
-                printk(KERN_ERR "rtas_flash: no firmware flash support\n");
+                pr_info("rtas_flash: no firmware flash support\n");
                 return 1;
         }
 
diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S
index d28c2d43ac1b..099fe8272b57 100644
--- a/arch/powerpc/kvm/bookehv_interrupts.S
+++ b/arch/powerpc/kvm/bookehv_interrupts.S
@@ -50,8 +50,9 @@
 #define HOST_R2         (3 * LONGBYTES)
 #define HOST_CR         (4 * LONGBYTES)
 #define HOST_NV_GPRS    (5 * LONGBYTES)
-#define HOST_NV_GPR(n)  (HOST_NV_GPRS + ((n - 14) * LONGBYTES))
-#define HOST_MIN_STACK_SIZE (HOST_NV_GPR(31) + LONGBYTES)
+#define __HOST_NV_GPR(n)  (HOST_NV_GPRS + ((n - 14) * LONGBYTES))
+#define HOST_NV_GPR(n)  __HOST_NV_GPR(__REG_##n)
+#define HOST_MIN_STACK_SIZE (HOST_NV_GPR(R31) + LONGBYTES)
 #define HOST_STACK_SIZE ((HOST_MIN_STACK_SIZE + 15) & ~15) /* Align. */
 #define HOST_STACK_LR   (HOST_STACK_SIZE + LONGBYTES) /* In caller stack frame. */
 
@@ -410,24 +411,24 @@ heavyweight_exit:
         PPC_STL r31, VCPU_GPR(R31)(r4)
 
         /* Load host non-volatile register state from host stack. */
-        PPC_LL  r14, HOST_NV_GPR(r14)(r1)
-        PPC_LL  r15, HOST_NV_GPR(r15)(r1)
-        PPC_LL  r16, HOST_NV_GPR(r16)(r1)
-        PPC_LL  r17, HOST_NV_GPR(r17)(r1)
-        PPC_LL  r18, HOST_NV_GPR(r18)(r1)
-        PPC_LL  r19, HOST_NV_GPR(r19)(r1)
-        PPC_LL  r20, HOST_NV_GPR(r20)(r1)
-        PPC_LL  r21, HOST_NV_GPR(r21)(r1)
-        PPC_LL  r22, HOST_NV_GPR(r22)(r1)
-        PPC_LL  r23, HOST_NV_GPR(r23)(r1)
-        PPC_LL  r24, HOST_NV_GPR(r24)(r1)
-        PPC_LL  r25, HOST_NV_GPR(r25)(r1)
-        PPC_LL  r26, HOST_NV_GPR(r26)(r1)
-        PPC_LL  r27, HOST_NV_GPR(r27)(r1)
-        PPC_LL  r28, HOST_NV_GPR(r28)(r1)
-        PPC_LL  r29, HOST_NV_GPR(r29)(r1)
-        PPC_LL  r30, HOST_NV_GPR(r30)(r1)
-        PPC_LL  r31, HOST_NV_GPR(r31)(r1)
+        PPC_LL  r14, HOST_NV_GPR(R14)(r1)
+        PPC_LL  r15, HOST_NV_GPR(R15)(r1)
+        PPC_LL  r16, HOST_NV_GPR(R16)(r1)
+        PPC_LL  r17, HOST_NV_GPR(R17)(r1)
+        PPC_LL  r18, HOST_NV_GPR(R18)(r1)
+        PPC_LL  r19, HOST_NV_GPR(R19)(r1)
+        PPC_LL  r20, HOST_NV_GPR(R20)(r1)
+        PPC_LL  r21, HOST_NV_GPR(R21)(r1)
+        PPC_LL  r22, HOST_NV_GPR(R22)(r1)
+        PPC_LL  r23, HOST_NV_GPR(R23)(r1)
+        PPC_LL  r24, HOST_NV_GPR(R24)(r1)
+        PPC_LL  r25, HOST_NV_GPR(R25)(r1)
+        PPC_LL  r26, HOST_NV_GPR(R26)(r1)
+        PPC_LL  r27, HOST_NV_GPR(R27)(r1)
+        PPC_LL  r28, HOST_NV_GPR(R28)(r1)
+        PPC_LL  r29, HOST_NV_GPR(R29)(r1)
+        PPC_LL  r30, HOST_NV_GPR(R30)(r1)
+        PPC_LL  r31, HOST_NV_GPR(R31)(r1)
 
         /* Return to kvm_vcpu_run(). */
         mtlr    r5
@@ -453,24 +454,24 @@ _GLOBAL(__kvmppc_vcpu_run)
         stw     r5, HOST_CR(r1)
 
         /* Save host non-volatile register state to stack. */
-        PPC_STL r14, HOST_NV_GPR(r14)(r1)
-        PPC_STL r15, HOST_NV_GPR(r15)(r1)
-        PPC_STL r16, HOST_NV_GPR(r16)(r1)
-        PPC_STL r17, HOST_NV_GPR(r17)(r1)
-        PPC_STL r18, HOST_NV_GPR(r18)(r1)
-        PPC_STL r19, HOST_NV_GPR(r19)(r1)
-        PPC_STL r20, HOST_NV_GPR(r20)(r1)
-        PPC_STL r21, HOST_NV_GPR(r21)(r1)
-        PPC_STL r22, HOST_NV_GPR(r22)(r1)
-        PPC_STL r23, HOST_NV_GPR(r23)(r1)
-        PPC_STL r24, HOST_NV_GPR(r24)(r1)
-        PPC_STL r25, HOST_NV_GPR(r25)(r1)
-        PPC_STL r26, HOST_NV_GPR(r26)(r1)
-        PPC_STL r27, HOST_NV_GPR(r27)(r1)
-        PPC_STL r28, HOST_NV_GPR(r28)(r1)
-        PPC_STL r29, HOST_NV_GPR(r29)(r1)
-        PPC_STL r30, HOST_NV_GPR(r30)(r1)
-        PPC_STL r31, HOST_NV_GPR(r31)(r1)
+        PPC_STL r14, HOST_NV_GPR(R14)(r1)
+        PPC_STL r15, HOST_NV_GPR(R15)(r1)
+        PPC_STL r16, HOST_NV_GPR(R16)(r1)
+        PPC_STL r17, HOST_NV_GPR(R17)(r1)
+        PPC_STL r18, HOST_NV_GPR(R18)(r1)
+        PPC_STL r19, HOST_NV_GPR(R19)(r1)
+        PPC_STL r20, HOST_NV_GPR(R20)(r1)
+        PPC_STL r21, HOST_NV_GPR(R21)(r1)
+        PPC_STL r22, HOST_NV_GPR(R22)(r1)
+        PPC_STL r23, HOST_NV_GPR(R23)(r1)
+        PPC_STL r24, HOST_NV_GPR(R24)(r1)
+        PPC_STL r25, HOST_NV_GPR(R25)(r1)
+        PPC_STL r26, HOST_NV_GPR(R26)(r1)
+        PPC_STL r27, HOST_NV_GPR(R27)(r1)
+        PPC_STL r28, HOST_NV_GPR(R28)(r1)
+        PPC_STL r29, HOST_NV_GPR(R29)(r1)
+        PPC_STL r30, HOST_NV_GPR(R30)(r1)
+        PPC_STL r31, HOST_NV_GPR(R31)(r1)
 
         /* Load guest non-volatiles. */
         PPC_LL  r14, VCPU_GPR(R14)(r4)
diff --git a/drivers/video/aty/radeon_monitor.c b/drivers/video/aty/radeon_monitor.c
index 9261c918fde8..5c23eac0eb9a 100644
--- a/drivers/video/aty/radeon_monitor.c
+++ b/drivers/video/aty/radeon_monitor.c
@@ -730,6 +730,25 @@ static void radeon_videomode_to_var(struct fb_var_screeninfo *var,
         var->vmode = mode->vmode;
 }
 
+#ifdef CONFIG_PPC_PSERIES
+static int is_powerblade(const char *model)
+{
+        struct device_node *root;
+        const char* cp;
+        int len, l, rc = 0;
+
+        root = of_find_node_by_path("/");
+        if (root && model) {
+                l = strlen(model);
+                cp = of_get_property(root, "model", &len);
+                if (cp)
+                        rc = memcmp(model, cp, min(len, l)) == 0;
+                of_node_put(root);
+        }
+        return rc;
+}
+#endif
+
 /*
  * Build the modedb for head 1 (head 2 will come later), check panel infos
  * from either BIOS or EDID, and pick up the default mode
@@ -865,6 +884,22 @@ void __devinit radeon_check_modes(struct radeonfb_info *rinfo, const char *mode_
                         has_default_mode = 1;
         }
 
+#ifdef CONFIG_PPC_PSERIES
+        if (!has_default_mode && (
+                is_powerblade("IBM,8842") || /* JS20 */
+                is_powerblade("IBM,8844") || /* JS21 */
+                is_powerblade("IBM,7998") || /* JS12/JS21/JS22 */
+                is_powerblade("IBM,0792") || /* QS21 */
+                is_powerblade("IBM,0793")    /* QS22 */
+            )) {
+                printk("Falling back to 800x600 on JSxx hardware\n");
+                if (fb_find_mode(&info->var, info, "800x600@60",
+                                 info->monspecs.modedb,
+                                 info->monspecs.modedb_len, NULL, 8) != 0)
+                        has_default_mode = 1;
+        }
+#endif
+
         /*
          * Still no mode, let's pick up a default from the db
          */