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-rw-r--r--arch/powerpc/Kconfig2
-rw-r--r--arch/powerpc/configs/pmac32_defconfig112
-rw-r--r--arch/powerpc/kernel/head_64.S35
-rw-r--r--arch/powerpc/kernel/legacy_serial.c13
-rw-r--r--arch/powerpc/kernel/misc_64.S2
-rw-r--r--arch/powerpc/kernel/prom_init.c36
-rw-r--r--arch/powerpc/kernel/smp.c24
-rw-r--r--arch/powerpc/kernel/udbg_16550.c6
-rw-r--r--arch/powerpc/mm/lmb.c3
-rw-r--r--arch/powerpc/platforms/chrp/setup.c12
-rw-r--r--arch/powerpc/platforms/maple/setup.c17
-rw-r--r--arch/powerpc/platforms/powermac/bootx_init.c35
-rw-r--r--arch/powerpc/platforms/powermac/cpufreq_64.c78
-rw-r--r--arch/powerpc/platforms/pseries/setup.c6
14 files changed, 297 insertions, 84 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 2643dbc3f289..13e583f16ede 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -504,7 +504,7 @@ config CPU_FREQ_PMAC
config CPU_FREQ_PMAC64
bool "Support for some Apple G5s"
- depends on CPU_FREQ && PMAC_SMU && PPC64
+ depends on CPU_FREQ && PPC64
select CPU_FREQ_TABLE
help
This adds support for frequency switching on Apple iMac G5,
diff --git a/arch/powerpc/configs/pmac32_defconfig b/arch/powerpc/configs/pmac32_defconfig
index addc79381c3b..3545af9896af 100644
--- a/arch/powerpc/configs/pmac32_defconfig
+++ b/arch/powerpc/configs/pmac32_defconfig
@@ -1,16 +1,18 @@
#
# Automatically generated make config: don't edit
-# Linux kernel version: 2.6.17-rc5
-# Mon May 29 14:47:49 2006
+# Linux kernel version: 2.6.17
+# Mon Jul 3 14:20:49 2006
#
# CONFIG_PPC64 is not set
CONFIG_PPC32=y
CONFIG_PPC_MERGE=y
CONFIG_MMU=y
CONFIG_GENERIC_HARDIRQS=y
+CONFIG_IRQ_PER_CPU=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_PPC=y
CONFIG_EARLY_PRINTK=y
CONFIG_GENERIC_NVRAM=y
@@ -29,6 +31,7 @@ CONFIG_CLASSIC32=y
# CONFIG_PPC_82xx is not set
# CONFIG_PPC_83xx is not set
# CONFIG_PPC_85xx is not set
+# CONFIG_PPC_86xx is not set
# CONFIG_40x is not set
# CONFIG_44x is not set
# CONFIG_8xx is not set
@@ -39,6 +42,7 @@ CONFIG_ALTIVEC=y
CONFIG_PPC_STD_MMU=y
CONFIG_PPC_STD_MMU_32=y
# CONFIG_SMP is not set
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
# Code maturity level options
@@ -72,10 +76,12 @@ CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
+CONFIG_RT_MUTEXES=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SHMEM=y
CONFIG_SLAB=y
+CONFIG_VM_EVENT_COUNTERS=y
# CONFIG_TINY_SHMEM is not set
CONFIG_BASE_SMALL=0
# CONFIG_SLOB is not set
@@ -119,6 +125,9 @@ CONFIG_PPC_MULTIPLATFORM=y
# CONFIG_APUS is not set
# CONFIG_PPC_CHRP is not set
CONFIG_PPC_PMAC=y
+# CONFIG_PPC_CELL is not set
+# CONFIG_PPC_CELL_NATIVE is not set
+# CONFIG_UDBG_RTAS_CONSOLE is not set
CONFIG_MPIC=y
# CONFIG_PPC_RTAS is not set
# CONFIG_MMIO_NVRAM is not set
@@ -154,6 +163,7 @@ CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT is not set
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=m
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
# CONFIG_KEXEC is not set
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_SELECT_MEMORY_MODEL=y
@@ -164,6 +174,7 @@ CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
# CONFIG_SPARSEMEM_STATIC is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_RESOURCES_64BIT is not set
CONFIG_PROC_DEVICETREE=y
# CONFIG_CMDLINE_BOOL is not set
CONFIG_PM=y
@@ -182,6 +193,7 @@ CONFIG_GENERIC_ISA_DMA=y
CONFIG_PPC_INDIRECT_PCI=y
CONFIG_PCI=y
CONFIG_PCI_DOMAINS=y
+# CONFIG_PCIEPORTBUS is not set
# CONFIG_PCI_DEBUG is not set
#
@@ -256,6 +268,8 @@ CONFIG_INET_ESP=y
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_XFRM_TUNNEL is not set
# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_TCP_CONG_ADVANCED is not set
@@ -268,6 +282,7 @@ CONFIG_TCP_CONG_BIC=y
# CONFIG_IPV6 is not set
# CONFIG_INET6_XFRM_TUNNEL is not set
# CONFIG_INET6_TUNNEL is not set
+# CONFIG_NETWORK_SECMARK is not set
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
@@ -292,9 +307,11 @@ CONFIG_NETFILTER_XT_MATCH_MARK=m
CONFIG_NETFILTER_XT_MATCH_POLICY=m
CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
+# CONFIG_NETFILTER_XT_MATCH_QUOTA is not set
CONFIG_NETFILTER_XT_MATCH_REALM=m
CONFIG_NETFILTER_XT_MATCH_SCTP=m
CONFIG_NETFILTER_XT_MATCH_STATE=m
+# CONFIG_NETFILTER_XT_MATCH_STATISTIC is not set
CONFIG_NETFILTER_XT_MATCH_STRING=m
CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
@@ -313,6 +330,7 @@ CONFIG_IP_NF_TFTP=m
CONFIG_IP_NF_AMANDA=m
CONFIG_IP_NF_PPTP=m
CONFIG_IP_NF_H323=m
+# CONFIG_IP_NF_SIP is not set
# CONFIG_IP_NF_QUEUE is not set
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_MATCH_IPRANGE=m
@@ -457,6 +475,7 @@ CONFIG_IRTTY_SIR=m
# CONFIG_ALI_FIR is not set
# CONFIG_VLSI_FIR is not set
# CONFIG_VIA_FIR is not set
+# CONFIG_MCS_FIR is not set
CONFIG_BT=m
CONFIG_BT_L2CAP=m
CONFIG_BT_SCO=m
@@ -500,6 +519,7 @@ CONFIG_WIRELESS_EXT=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_SYS_HYPERVISOR is not set
#
# Connector - unified userspace <-> kernelspace linker
@@ -600,7 +620,6 @@ CONFIG_BLK_DEV_PDC202XX_NEW=y
CONFIG_BLK_DEV_IDE_PMAC=y
CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST=y
CONFIG_BLK_DEV_IDEDMA_PMAC=y
-CONFIG_BLK_DEV_IDE_PMAC_BLINK=y
# CONFIG_IDE_ARM is not set
CONFIG_BLK_DEV_IDEDMA=y
# CONFIG_IDEDMA_IVB is not set
@@ -661,6 +680,7 @@ CONFIG_SCSI_AIC7XXX_OLD=m
# CONFIG_MEGARAID_LEGACY is not set
# CONFIG_MEGARAID_SAS is not set
# CONFIG_SCSI_SATA is not set
+# CONFIG_SCSI_HPTIOP is not set
# CONFIG_SCSI_BUSLOGIC is not set
# CONFIG_SCSI_DMX3191D is not set
# CONFIG_SCSI_EATA is not set
@@ -705,9 +725,7 @@ CONFIG_MD_LINEAR=m
CONFIG_MD_RAID0=m
CONFIG_MD_RAID1=m
CONFIG_MD_RAID10=m
-CONFIG_MD_RAID5=m
-CONFIG_MD_RAID5_RESHAPE=y
-CONFIG_MD_RAID6=m
+# CONFIG_MD_RAID456 is not set
CONFIG_MD_MULTIPATH=m
CONFIG_MD_FAULTY=m
CONFIG_BLK_DEV_DM=m
@@ -750,7 +768,6 @@ CONFIG_IEEE1394_OHCI1394=m
#
CONFIG_IEEE1394_VIDEO1394=m
CONFIG_IEEE1394_SBP2=m
-# CONFIG_IEEE1394_SBP2_PHYS_DMA is not set
# CONFIG_IEEE1394_ETH1394 is not set
CONFIG_IEEE1394_DV1394=m
CONFIG_IEEE1394_RAWIO=m
@@ -766,9 +783,12 @@ CONFIG_IEEE1394_RAWIO=m
CONFIG_ADB=y
CONFIG_ADB_CUDA=y
CONFIG_ADB_PMU=y
+CONFIG_ADB_PMU_LED=y
+CONFIG_ADB_PMU_LED_IDE=y
CONFIG_PMAC_APM_EMU=m
CONFIG_PMAC_MEDIABAY=y
CONFIG_PMAC_BACKLIGHT=y
+CONFIG_PMAC_BACKLIGHT_LEGACY=y
CONFIG_INPUT_ADBHID=y
CONFIG_MAC_EMUMOUSEBTN=y
CONFIG_THERM_WINDTUNNEL=m
@@ -858,6 +878,7 @@ CONFIG_PCNET32=y
# CONFIG_CHELSIO_T1 is not set
# CONFIG_IXGB is not set
# CONFIG_S2IO is not set
+# CONFIG_MYRI10GE is not set
#
# Token Ring devices
@@ -908,6 +929,7 @@ CONFIG_APPLE_AIRPORT=m
# Prism GT/Duette 802.11(a/b/g) PCI/Cardbus support
#
CONFIG_PRISM54=m
+# CONFIG_USB_ZD1201 is not set
# CONFIG_HOSTAP is not set
CONFIG_NET_WIRELESS=y
@@ -998,6 +1020,7 @@ CONFIG_SERIO=y
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
+# CONFIG_VT_HW_CONSOLE_BINDING is not set
# CONFIG_SERIAL_NONSTANDARD is not set
#
@@ -1029,6 +1052,7 @@ CONFIG_LEGACY_PTY_COUNT=256
# Watchdog Cards
#
# CONFIG_WATCHDOG is not set
+# CONFIG_HW_RANDOM is not set
CONFIG_NVRAM=y
CONFIG_GEN_RTC=y
# CONFIG_GEN_RTC_X is not set
@@ -1040,6 +1064,7 @@ CONFIG_GEN_RTC=y
# Ftape, the floppy tape device driver
#
CONFIG_AGP=m
+# CONFIG_AGP_SIS is not set
# CONFIG_AGP_VIA is not set
CONFIG_AGP_UNINORTH=m
CONFIG_DRM=m
@@ -1092,6 +1117,7 @@ CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_POWERMAC=y
# CONFIG_I2C_MPC is not set
# CONFIG_I2C_NFORCE2 is not set
+# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PROSAVAGE is not set
# CONFIG_I2C_SAVAGE4 is not set
@@ -1156,12 +1182,13 @@ CONFIG_VIDEO_V4L2=y
#
# Graphics support
#
+# CONFIG_FIRMWARE_EDID is not set
CONFIG_FB=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
CONFIG_FB_MACMODES=y
-CONFIG_FB_FIRMWARE_EDID=y
+CONFIG_FB_BACKLIGHT=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y
# CONFIG_FB_CIRRUS is not set
@@ -1178,6 +1205,7 @@ CONFIG_FB_IMSTT=y
# CONFIG_FB_S1D13XXX is not set
CONFIG_FB_NVIDIA=y
CONFIG_FB_NVIDIA_I2C=y
+CONFIG_FB_NVIDIA_BACKLIGHT=y
# CONFIG_FB_RIVA is not set
CONFIG_FB_MATROX=y
CONFIG_FB_MATROX_MILLENIUM=y
@@ -1187,12 +1215,15 @@ CONFIG_FB_MATROX_MYSTIQUE=y
# CONFIG_FB_MATROX_MULTIHEAD is not set
CONFIG_FB_RADEON=y
CONFIG_FB_RADEON_I2C=y
+CONFIG_FB_RADEON_BACKLIGHT=y
# CONFIG_FB_RADEON_DEBUG is not set
CONFIG_FB_ATY128=y
+CONFIG_FB_ATY128_BACKLIGHT=y
CONFIG_FB_ATY=y
CONFIG_FB_ATY_CT=y
# CONFIG_FB_ATY_GENERIC_LCD is not set
CONFIG_FB_ATY_GX=y
+CONFIG_FB_ATY_BACKLIGHT=y
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_NEOMAGIC is not set
@@ -1221,7 +1252,11 @@ CONFIG_LOGO=y
CONFIG_LOGO_LINUX_MONO=y
CONFIG_LOGO_LINUX_VGA16=y
CONFIG_LOGO_LINUX_CLUT224=y
-# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+CONFIG_BACKLIGHT_LCD_SUPPORT=y
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+CONFIG_BACKLIGHT_DEVICE=y
+CONFIG_LCD_CLASS_DEVICE=m
+CONFIG_LCD_DEVICE=y
#
# Sound
@@ -1278,6 +1313,18 @@ CONFIG_SND_DUMMY=m
# CONFIG_SND_CMIPCI is not set
# CONFIG_SND_CS4281 is not set
# CONFIG_SND_CS46XX is not set
+# CONFIG_SND_DARLA20 is not set
+# CONFIG_SND_GINA20 is not set
+# CONFIG_SND_LAYLA20 is not set
+# CONFIG_SND_DARLA24 is not set
+# CONFIG_SND_GINA24 is not set
+# CONFIG_SND_LAYLA24 is not set
+# CONFIG_SND_MONA is not set
+# CONFIG_SND_MIA is not set
+# CONFIG_SND_ECHO3G is not set
+# CONFIG_SND_INDIGO is not set
+# CONFIG_SND_INDIGOIO is not set
+# CONFIG_SND_INDIGODJ is not set
# CONFIG_SND_EMU10K1 is not set
# CONFIG_SND_EMU10K1X is not set
# CONFIG_SND_ENS1370 is not set
@@ -1315,6 +1362,17 @@ CONFIG_SND_POWERMAC=m
CONFIG_SND_POWERMAC_AUTO_DRC=y
#
+# Apple Onboard Audio driver
+#
+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_AOA_SOUNDBUS=m
+CONFIG_SND_AOA_SOUNDBUS_I2S=m
+
+#
# USB devices
#
CONFIG_SND_USB_AUDIO=m
@@ -1355,6 +1413,7 @@ CONFIG_USB_DYNAMIC_MINORS=y
CONFIG_USB_EHCI_HCD=m
CONFIG_USB_EHCI_SPLIT_ISO=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
+# CONFIG_USB_EHCI_TT_NEWSCHED is not set
# CONFIG_USB_ISP116X_HCD is not set
CONFIG_USB_OHCI_HCD=y
# CONFIG_USB_OHCI_BIG_ENDIAN is not set
@@ -1431,7 +1490,6 @@ CONFIG_USB_NET_NET1080=m
# CONFIG_USB_NET_RNDIS_HOST is not set
# CONFIG_USB_NET_CDC_SUBSET is not set
CONFIG_USB_NET_ZAURUS=m
-# CONFIG_USB_ZD1201 is not set
CONFIG_USB_MON=y
#
@@ -1499,10 +1557,12 @@ CONFIG_USB_EZUSB=y
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_LED is not set
+# CONFIG_USB_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_PHIDGETKIT is not set
# CONFIG_USB_PHIDGETSERVO is not set
# CONFIG_USB_IDMOUSE is not set
+CONFIG_USB_APPLEDISPLAY=m
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TEST is not set
@@ -1524,7 +1584,8 @@ CONFIG_USB_EZUSB=y
#
# LED devices
#
-# CONFIG_NEW_LEDS is not set
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
#
# LED drivers
@@ -1533,6 +1594,10 @@ CONFIG_USB_EZUSB=y
#
# LED Triggers
#
+CONFIG_LEDS_TRIGGERS=y
+# CONFIG_LEDS_TRIGGER_TIMER is not set
+CONFIG_LEDS_TRIGGER_IDE_DISK=y
+# CONFIG_LEDS_TRIGGER_HEARTBEAT is not set
#
# InfiniBand support
@@ -1549,6 +1614,19 @@ CONFIG_USB_EZUSB=y
# CONFIG_RTC_CLASS is not set
#
+# DMA Engine support
+#
+# CONFIG_DMA_ENGINE is not set
+
+#
+# DMA Clients
+#
+
+#
+# DMA Devices
+#
+
+#
# File systems
#
CONFIG_EXT2_FS=y
@@ -1569,6 +1647,7 @@ CONFIG_FS_POSIX_ACL=y
# CONFIG_MINIX_FS is not set
# CONFIG_ROMFS_FS is not set
CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
CONFIG_DNOTIFY=y
# CONFIG_AUTOFS_FS is not set
@@ -1649,6 +1728,7 @@ CONFIG_RPCSEC_GSS_KRB5=y
CONFIG_SMB_FS=m
# CONFIG_SMB_NLS_DEFAULT is not set
# CONFIG_CIFS is not set
+# CONFIG_CIFS_DEBUG2 is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
@@ -1732,6 +1812,7 @@ CONFIG_TEXTSEARCH=y
CONFIG_TEXTSEARCH_KMP=m
CONFIG_TEXTSEARCH_BM=m
CONFIG_TEXTSEARCH_FSM=m
+CONFIG_PLIST=y
#
# Instrumentation Support
@@ -1744,12 +1825,15 @@ CONFIG_OPROFILE=y
#
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
+# CONFIG_UNUSED_SYMBOLS is not set
CONFIG_DEBUG_KERNEL=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_DETECT_SOFTLOCKUP=y
# CONFIG_SCHEDSTATS is not set
# CONFIG_DEBUG_SLAB is not set
# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
# CONFIG_DEBUG_KOBJECT is not set
@@ -1763,11 +1847,7 @@ CONFIG_XMON=y
CONFIG_XMON_DEFAULT=y
# CONFIG_BDI_SWITCH is not set
CONFIG_BOOTX_TEXT=y
-# CONFIG_PPC_EARLY_DEBUG_LPAR is not set
-# CONFIG_PPC_EARLY_DEBUG_G5 is not set
-# CONFIG_PPC_EARLY_DEBUG_RTAS is not set
-# CONFIG_PPC_EARLY_DEBUG_MAPLE is not set
-# CONFIG_PPC_EARLY_DEBUG_ISERIES is not set
+# CONFIG_PPC_EARLY_DEBUG is not set
#
# Security options
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index e16eb2a33173..6ff3cf506088 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -191,6 +191,37 @@ exception_marker:
ori reg,reg,(label)@l; /* virt addr of handler ... */
#endif
+/*
+ * Equal to EXCEPTION_PROLOG_PSERIES, except that it forces 64bit mode.
+ * The firmware calls the registered system_reset_fwnmi and
+ * machine_check_fwnmi handlers in 32bit mode if the cpu happens to run
+ * a 32bit application at the time of the event.
+ * This firmware bug is present on POWER4 and JS20.
+ */
+#define EXCEPTION_PROLOG_PSERIES_FORCE_64BIT(area, label) \
+ mfspr r13,SPRN_SPRG3; /* get paca address into r13 */ \
+ std r9,area+EX_R9(r13); /* save r9 - r12 */ \
+ std r10,area+EX_R10(r13); \
+ std r11,area+EX_R11(r13); \
+ std r12,area+EX_R12(r13); \
+ mfspr r9,SPRN_SPRG1; \
+ std r9,area+EX_R13(r13); \
+ mfcr r9; \
+ clrrdi r12,r13,32; /* get high part of &label */ \
+ mfmsr r10; \
+ /* force 64bit mode */ \
+ li r11,5; /* MSR_SF_LG|MSR_ISF_LG */ \
+ rldimi r10,r11,61,0; /* insert into top 3 bits */ \
+ /* done 64bit mode */ \
+ mfspr r11,SPRN_SRR0; /* save SRR0 */ \
+ LOAD_HANDLER(r12,label) \
+ ori r10,r10,MSR_IR|MSR_DR|MSR_RI; \
+ mtspr SPRN_SRR0,r12; \
+ mfspr r12,SPRN_SRR1; /* and SRR1 */ \
+ mtspr SPRN_SRR1,r10; \
+ rfid; \
+ b . /* prevent speculative execution */
+
#define EXCEPTION_PROLOG_PSERIES(area, label) \
mfspr r13,SPRN_SPRG3; /* get paca address into r13 */ \
std r9,area+EX_R9(r13); /* save r9 - r12 */ \
@@ -604,14 +635,14 @@ slb_miss_user_pseries:
system_reset_fwnmi:
HMT_MEDIUM
mtspr SPRN_SPRG1,r13 /* save r13 */
- EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common)
+ EXCEPTION_PROLOG_PSERIES_FORCE_64BIT(PACA_EXGEN, system_reset_common)
.globl machine_check_fwnmi
.align 7
machine_check_fwnmi:
HMT_MEDIUM
mtspr SPRN_SPRG1,r13 /* save r13 */
- EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common)
+ EXCEPTION_PROLOG_PSERIES_FORCE_64BIT(PACA_EXMC, machine_check_common)
#ifdef CONFIG_PPC_ISERIES
/*** ISeries-LPAR interrupt handlers ***/
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index 7e98e778b52f..359ab89748e0 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -112,7 +112,7 @@ static int __init add_legacy_port(struct device_node *np, int want_index,
static int __init add_legacy_soc_port(struct device_node *np,
struct device_node *soc_dev)
{
- phys_addr_t addr;
+ u64 addr;
u32 *addrp;
upf_t flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
@@ -143,7 +143,7 @@ static int __init add_legacy_isa_port(struct device_node *np,
u32 *reg;
char *typep;
int index = -1;
- phys_addr_t taddr;
+ u64 taddr;
DBG(" -> add_legacy_isa_port(%s)\n", np->full_name);
@@ -165,10 +165,13 @@ static int __init add_legacy_isa_port(struct device_node *np,
if (typep && *typep == 'S')
index = simple_strtol(typep+1, NULL, 0) - 1;
- /* Translate ISA address */
+ /* Translate ISA address. If it fails, we still register the port
+ * with no translated address so that it can be picked up as an IO
+ * port later by the serial driver
+ */
taddr = of_translate_address(np, reg);
if (taddr == OF_BAD_ADDR)
- return -1;
+ taddr = 0;
/* Add port, irq will be dealt with later */
return add_legacy_port(np, index, UPIO_PORT, reg[1], taddr,
@@ -180,7 +183,7 @@ static int __init add_legacy_isa_port(struct device_node *np,
static int __init add_legacy_pci_port(struct device_node *np,
struct device_node *pci_dev)
{
- phys_addr_t addr, base;
+ u64 addr, base;
u32 *addrp;
unsigned int flags;
int iotype, index = -1, lindex = 0;
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index bfb407fc1aa1..e3ed21cd3d94 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -687,7 +687,7 @@ _GLOBAL(kexec_sequence)
/* clear out hardware hash page table and tlb */
ld r5,0(r27) /* deref function descriptor */
mtctr r5
- bctrl /* ppc_md.hash_clear_all(void); */
+ bctrl /* ppc_md.hpte_clear_all(void); */
/*
* kexec image calling is:
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index ebd501a59abd..462bced40c12 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -557,7 +557,9 @@ unsigned long prom_memparse(const char *ptr, const char **retptr)
static void __init early_cmdline_parse(void)
{
struct prom_t *_prom = &RELOC(prom);
+#ifdef CONFIG_PPC64
const char *opt;
+#endif
char *p;
int l = 0;
@@ -2030,6 +2032,39 @@ static void __init fixup_device_tree_maple(void)
#define fixup_device_tree_maple()
#endif
+#ifdef CONFIG_PPC_CHRP
+/* Pegasos lacks the "ranges" property in the isa node */
+static void __init fixup_device_tree_chrp(void)
+{
+ phandle isa;
+ u32 isa_ranges[6];
+ char *name;
+ int rc;
+
+ name = "/pci@80000000/isa@c";
+ isa = call_prom("finddevice", 1, 1, ADDR(name));
+ if (!PHANDLE_VALID(isa))
+ return;
+
+ rc = prom_getproplen(isa, "ranges");
+ if (rc != 0 && rc != PROM_ERROR)
+ return;
+
+ prom_printf("Fixing up missing ISA range on Pegasos...\n");
+
+ isa_ranges[0] = 0x1;
+ isa_ranges[1] = 0x0;
+ isa_ranges[2] = 0x01006000;
+ isa_ranges[3] = 0x0;
+ isa_ranges[4] = 0x0;
+ isa_ranges[5] = 0x00010000;
+ prom_setprop(isa, name, "ranges",
+ isa_ranges, sizeof(isa_ranges));
+}
+#else
+#define fixup_device_tree_chrp()
+#endif
+
#if defined(CONFIG_PPC64) && defined(CONFIG_PPC_PMAC)
static void __init fixup_device_tree_pmac(void)
{
@@ -2077,6 +2112,7 @@ static void __init fixup_device_tree_pmac(void)
static void __init fixup_device_tree(void)
{
fixup_device_tree_maple();
+ fixup_device_tree_chrp();
fixup_device_tree_pmac();
}
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 46c56cfd1b2f..6a9bc9ce54e0 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -144,13 +144,15 @@ void smp_message_recv(int msg, struct pt_regs *regs)
void smp_send_reschedule(int cpu)
{
- smp_ops->message_pass(cpu, PPC_MSG_RESCHEDULE);
+ if (likely(smp_ops))
+ smp_ops->message_pass(cpu, PPC_MSG_RESCHEDULE);
}
#ifdef CONFIG_DEBUGGER
void smp_send_debugger_break(int cpu)
{
- smp_ops->message_pass(cpu, PPC_MSG_DEBUGGER_BREAK);
+ if (likely(smp_ops))
+ smp_ops->message_pass(cpu, PPC_MSG_DEBUGGER_BREAK);
}
#endif
@@ -158,7 +160,7 @@ void smp_send_debugger_break(int cpu)
void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *))
{
crash_ipi_function_ptr = crash_ipi_callback;
- if (crash_ipi_callback) {
+ if (crash_ipi_callback && smp_ops) {
mb();
smp_ops->message_pass(MSG_ALL_BUT_SELF, PPC_MSG_DEBUGGER_BREAK);
}
@@ -220,6 +222,9 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
/* Can deadlock when called with interrupts disabled */
WARN_ON(irqs_disabled());
+ if (unlikely(smp_ops == NULL))
+ return -1;
+
data.func = func;
data.info = info;
atomic_set(&data.started, 0);
@@ -357,7 +362,10 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
smp_store_cpu_info(boot_cpuid);
cpu_callin_map[boot_cpuid] = 1;
- max_cpus = smp_ops->probe();
+ if (smp_ops)
+ max_cpus = smp_ops->probe();
+ else
+ max_cpus = 1;
smp_space_timers(max_cpus);
@@ -453,7 +461,7 @@ void generic_mach_cpu_die(void)
static int __devinit cpu_enable(unsigned int cpu)
{
- if (smp_ops->cpu_enable)
+ if (smp_ops && smp_ops->cpu_enable)
return smp_ops->cpu_enable(cpu);
return -ENOSYS;
@@ -467,7 +475,8 @@ int __devinit __cpu_up(unsigned int cpu)
if (!cpu_enable(cpu))
return 0;
- if (smp_ops->cpu_bootable && !smp_ops->cpu_bootable(cpu))
+ if (smp_ops == NULL ||
+ (smp_ops->cpu_bootable && !smp_ops->cpu_bootable(cpu)))
return -EINVAL;
/* Make sure callin-map entry is 0 (can be leftover a CPU
@@ -568,7 +577,8 @@ void __init smp_cpus_done(unsigned int max_cpus)
old_mask = current->cpus_allowed;
set_cpus_allowed(current, cpumask_of_cpu(boot_cpuid));
- smp_ops->setup_cpu(boot_cpuid);
+ if (smp_ops)
+ smp_ops->setup_cpu(boot_cpuid);
set_cpus_allowed(current, old_mask);
diff --git a/arch/powerpc/kernel/udbg_16550.c b/arch/powerpc/kernel/udbg_16550.c
index 0835b4841dea..2d17f2b8eda7 100644
--- a/arch/powerpc/kernel/udbg_16550.c
+++ b/arch/powerpc/kernel/udbg_16550.c
@@ -81,10 +81,14 @@ static int udbg_550_getc(void)
void udbg_init_uart(void __iomem *comport, unsigned int speed,
unsigned int clock)
{
- unsigned int dll, base_bauds = clock / 16;
+ unsigned int dll, base_bauds;
+ if (clock == 0)
+ clock = 1843200;
if (speed == 0)
speed = 9600;
+
+ base_bauds = clock / 16;
dll = base_bauds / speed;
if (comport) {
diff --git a/arch/powerpc/mm/lmb.c b/arch/powerpc/mm/lmb.c
index 4b17a7359924..716a2906a24d 100644
--- a/arch/powerpc/mm/lmb.c
+++ b/arch/powerpc/mm/lmb.c
@@ -320,7 +320,8 @@ void __init lmb_enforce_memory_limit(unsigned long memory_limit)
break;
}
- lmb.rmo_size = lmb.memory.region[0].size;
+ if (lmb.memory.region[0].size < lmb.rmo_size)
+ lmb.rmo_size = lmb.memory.region[0].size;
/* And truncate any reserves above the limit also. */
for (i = 0; i < lmb.reserved.cnt; i++) {
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index 538e337d63e2..9c08ff322290 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -291,10 +291,6 @@ void __init chrp_setup_arch(void)
pci_create_OF_bus_map();
-#ifdef CONFIG_SMP
- smp_ops = &chrp_smp_ops;
-#endif /* CONFIG_SMP */
-
/*
* Print the banner, then scroll down so boot progress
* can be printed. -- Cort
@@ -479,6 +475,14 @@ void __init chrp_init_IRQ(void)
chrp_find_openpic();
chrp_find_8259();
+#ifdef CONFIG_SMP
+ /* Pegasos has no MPIC, those ops would make it crash. It might be an
+ * option to move setting them to after we probe the PIC though
+ */
+ if (chrp_mpic != NULL)
+ smp_ops = &chrp_smp_ops;
+#endif /* CONFIG_SMP */
+
if (_chrp_type == _CHRP_Pegasos)
ppc_md.get_irq = i8259_irq;
diff --git a/arch/powerpc/platforms/maple/setup.c b/arch/powerpc/platforms/maple/setup.c
index cb528c9de4c3..57567dfb9819 100644
--- a/arch/powerpc/platforms/maple/setup.c
+++ b/arch/powerpc/platforms/maple/setup.c
@@ -221,10 +221,17 @@ static void __init maple_init_IRQ(void)
* in Maple device-tree where the type of the controller is
* open-pic and not interrupt-controller
*/
- for_each_node_by_type(np, "open-pic") {
- mpic_node = np;
- break;
- }
+
+ for_each_node_by_type(np, "interrupt-controller")
+ if (device_is_compatible(np, "open-pic")) {
+ mpic_node = np;
+ break;
+ }
+ if (mpic_node == NULL)
+ for_each_node_by_type(np, "open-pic") {
+ mpic_node = np;
+ break;
+ }
if (mpic_node == NULL) {
printk(KERN_ERR
"Failed to locate the MPIC interrupt controller\n");
@@ -252,6 +259,8 @@ static void __init maple_init_IRQ(void)
/* XXX Maple specific bits */
flags |= MPIC_BROKEN_U3 | MPIC_WANTS_RESET;
+ /* All U3/U4 are big-endian, older SLOF firmware doesn't encode this */
+ flags |= MPIC_BIG_ENDIAN;
/* Setup the openpic driver. More device-tree junks, we hard code no
* ISUs for now. I'll have to revisit some stuffs with the folks doing
diff --git a/arch/powerpc/platforms/powermac/bootx_init.c b/arch/powerpc/platforms/powermac/bootx_init.c
index 871b002c9f90..6a026c733f6a 100644
--- a/arch/powerpc/platforms/powermac/bootx_init.c
+++ b/arch/powerpc/platforms/powermac/bootx_init.c
@@ -181,13 +181,18 @@ static void __init bootx_add_chosen_props(unsigned long base,
}
static void __init bootx_add_display_props(unsigned long base,
- unsigned long *mem_end)
+ unsigned long *mem_end,
+ int has_real_node)
{
boot_infos_t *bi = bootx_info;
u32 tmp;
- bootx_dt_add_prop("linux,boot-display", NULL, 0, mem_end);
- bootx_dt_add_prop("linux,opened", NULL, 0, mem_end);
+ if (has_real_node) {
+ bootx_dt_add_prop("linux,boot-display", NULL, 0, mem_end);
+ bootx_dt_add_prop("linux,opened", NULL, 0, mem_end);
+ } else
+ bootx_dt_add_prop("linux,bootx-noscreen", NULL, 0, mem_end);
+
tmp = bi->dispDeviceDepth;
bootx_dt_add_prop("linux,bootx-depth", &tmp, 4, mem_end);
tmp = bi->dispDeviceRect[2] - bi->dispDeviceRect[0];
@@ -241,11 +246,6 @@ static void __init bootx_scan_dt_build_strings(unsigned long base,
DBG(" detected display ! adding properties names !\n");
bootx_dt_add_string("linux,boot-display", mem_end);
bootx_dt_add_string("linux,opened", mem_end);
- bootx_dt_add_string("linux,bootx-depth", mem_end);
- bootx_dt_add_string("linux,bootx-width", mem_end);
- bootx_dt_add_string("linux,bootx-height", mem_end);
- bootx_dt_add_string("linux,bootx-linebytes", mem_end);
- bootx_dt_add_string("linux,bootx-addr", mem_end);
strncpy(bootx_disp_path, namep, 255);
}
@@ -329,10 +329,13 @@ static void __init bootx_scan_dt_build_struct(unsigned long base,
ppp = &pp->next;
}
- if (node == bootx_node_chosen)
+ if (node == bootx_node_chosen) {
bootx_add_chosen_props(base, mem_end);
- if (node == bootx_info->dispDeviceRegEntryOffset)
- bootx_add_display_props(base, mem_end);
+ if (bootx_info->dispDeviceRegEntryOffset == 0)
+ bootx_add_display_props(base, mem_end, 0);
+ }
+ else if (node == bootx_info->dispDeviceRegEntryOffset)
+ bootx_add_display_props(base, mem_end, 1);
/* do all our children */
cpp = &np->child;
@@ -374,6 +377,14 @@ static unsigned long __init bootx_flatten_dt(unsigned long start)
mem_end += 4;
bootx_dt_strend = mem_end;
bootx_scan_dt_build_strings(base, 4, &mem_end);
+ /* Add some strings */
+ bootx_dt_add_string("linux,bootx-noscreen", &mem_end);
+ bootx_dt_add_string("linux,bootx-depth", &mem_end);
+ bootx_dt_add_string("linux,bootx-width", &mem_end);
+ bootx_dt_add_string("linux,bootx-height", &mem_end);
+ bootx_dt_add_string("linux,bootx-linebytes", &mem_end);
+ bootx_dt_add_string("linux,bootx-addr", &mem_end);
+ /* Wrap up strings */
hdr->off_dt_strings = bootx_dt_strbase - mem_start;
hdr->dt_strings_size = bootx_dt_strend - bootx_dt_strbase;
@@ -471,6 +482,7 @@ void __init bootx_init(unsigned long r3, unsigned long r4)
if (bi->dispDeviceDepth == 16)
bi->dispDeviceDepth = 15;
+
#ifdef CONFIG_BOOTX_TEXT
ptr = (unsigned long)bi->logicalDisplayBase;
ptr += bi->dispDeviceRect[1] * bi->dispDeviceRowBytes;
@@ -508,6 +520,7 @@ void __init bootx_init(unsigned long r3, unsigned long r4)
#ifdef CONFIG_BOOTX_TEXT
btext_welcome(bi);
#endif
+
/* New BootX enters kernel with MMU off, i/os are not allowed
* here. This hack will have been done by the boostrap anyway.
*/
diff --git a/arch/powerpc/platforms/powermac/cpufreq_64.c b/arch/powerpc/platforms/powermac/cpufreq_64.c
index f08a14516139..7b1156ea5341 100644
--- a/arch/powerpc/platforms/powermac/cpufreq_64.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_64.c
@@ -10,6 +10,8 @@
* that is iMac G5 and latest single CPU desktop.
*/
+#undef DEBUG
+
#include <linux/module.h>
#include <linux/types.h>
#include <linux/errno.h>
@@ -30,13 +32,7 @@
#include <asm/smu.h>
#include <asm/pmac_pfunc.h>
-#undef DEBUG
-
-#ifdef DEBUG
-#define DBG(fmt...) printk(fmt)
-#else
-#define DBG(fmt...)
-#endif
+#define DBG(fmt...) pr_debug(fmt)
/* see 970FX user manual */
@@ -82,8 +78,6 @@ static struct freq_attr* g5_cpu_freqs_attr[] = {
/* Power mode data is an array of the 32 bits PCR values to use for
* the various frequencies, retrieved from the device-tree
*/
-static u32 *g5_pmode_data;
-static int g5_pmode_max;
static int g5_pmode_cur;
static void (*g5_switch_volt)(int speed_mode);
@@ -93,6 +87,11 @@ static int (*g5_query_freq)(void);
static DEFINE_MUTEX(g5_switch_mutex);
+#ifdef CONFIG_PMAC_SMU
+
+static u32 *g5_pmode_data;
+static int g5_pmode_max;
+
static struct smu_sdbp_fvt *g5_fvt_table; /* table of op. points */
static int g5_fvt_count; /* number of op. points */
static int g5_fvt_cur; /* current op. point */
@@ -210,6 +209,16 @@ static int g5_scom_query_freq(void)
}
/*
+ * Fake voltage switching for platforms with missing support
+ */
+
+static void g5_dummy_switch_volt(int speed_mode)
+{
+}
+
+#endif /* CONFIG_PMAC_SMU */
+
+/*
* Platform function based voltage switching for PowerMac7,2 & 7,3
*/
@@ -248,6 +257,9 @@ static int g5_pfunc_switch_freq(int speed_mode)
struct pmf_args args;
u32 done = 0;
unsigned long timeout;
+ int rc;
+
+ DBG("g5_pfunc_switch_freq(%d)\n", speed_mode);
/* If frequency is going up, first ramp up the voltage */
if (speed_mode < g5_pmode_cur)
@@ -255,9 +267,12 @@ static int g5_pfunc_switch_freq(int speed_mode)
/* Do it */
if (speed_mode == CPUFREQ_HIGH)
- pmf_call_one(pfunc_cpu_setfreq_high, NULL);
+ rc = pmf_call_one(pfunc_cpu_setfreq_high, NULL);
else
- pmf_call_one(pfunc_cpu_setfreq_low, NULL);
+ rc = pmf_call_one(pfunc_cpu_setfreq_low, NULL);
+
+ if (rc)
+ printk(KERN_WARNING "cpufreq: pfunc switch error %d\n", rc);
/* It's an irq GPIO so we should be able to just block here,
* I'll do that later after I've properly tested the IRQ code for
@@ -296,13 +311,6 @@ static int g5_pfunc_query_freq(void)
return val ? CPUFREQ_HIGH : CPUFREQ_LOW;
}
-/*
- * Fake voltage switching for platforms with missing support
- */
-
-static void g5_dummy_switch_volt(int speed_mode)
-{
-}
/*
* Common interface to the cpufreq core
@@ -375,6 +383,8 @@ static struct cpufreq_driver g5_cpufreq_driver = {
};
+#ifdef CONFIG_PMAC_SMU
+
static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
{
struct device_node *cpunode;
@@ -525,6 +535,9 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
return rc;
}
+#endif /* CONFIG_PMAC_SMU */
+
+
static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
{
struct device_node *cpuid = NULL, *hwclock = NULL, *cpunode = NULL;
@@ -533,6 +546,9 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
u64 max_freq, min_freq, ih, il;
int has_volt = 1, rc = 0;
+ DBG("cpufreq: Initializing for PowerMac7,2, PowerMac7,3 and"
+ " RackMac3,1...\n");
+
/* Get first CPU node */
for (cpunode = NULL;
(cpunode = of_get_next_child(cpus, cpunode)) != NULL;) {
@@ -636,6 +652,15 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
*/
ih = *((u32 *)(eeprom + 0x10));
il = *((u32 *)(eeprom + 0x20));
+
+ /* Check for machines with no useful settings */
+ if (il == ih) {
+ printk(KERN_WARNING "cpufreq: No low frequency mode available"
+ " on this model !\n");
+ rc = -ENODEV;
+ goto bail;
+ }
+
min_freq = 0;
if (ih != 0 && il != 0)
min_freq = (max_freq * il) / ih;
@@ -643,7 +668,7 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
/* Sanity check */
if (min_freq >= max_freq || min_freq < 1000) {
printk(KERN_ERR "cpufreq: Can't calculate low frequency !\n");
- rc = -ENODEV;
+ rc = -ENXIO;
goto bail;
}
g5_cpu_freqs[0].frequency = max_freq;
@@ -690,16 +715,10 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
return rc;
}
-static int __init g5_rm31_cpufreq_init(struct device_node *cpus)
-{
- /* NYI */
- return 0;
-}
-
static int __init g5_cpufreq_init(void)
{
struct device_node *cpus;
- int rc;
+ int rc = 0;
cpus = of_find_node_by_path("/cpus");
if (cpus == NULL) {
@@ -708,12 +727,13 @@ static int __init g5_cpufreq_init(void)
}
if (machine_is_compatible("PowerMac7,2") ||
- machine_is_compatible("PowerMac7,3"))
+ machine_is_compatible("PowerMac7,3") ||
+ machine_is_compatible("RackMac3,1"))
rc = g5_pm72_cpufreq_init(cpus);
- else if (machine_is_compatible("RackMac3,1"))
- rc = g5_rm31_cpufreq_init(cpus);
+#ifdef CONFIG_PMAC_SMU
else
rc = g5_neo2_cpufreq_init(cpus);
+#endif /* CONFIG_PMAC_SMU */
of_node_put(cpus);
return rc;
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 54a52437265c..71c634e0b87c 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -501,7 +501,8 @@ static void pseries_dedicated_idle_sleep(void)
}
/*
- * Cede if the other thread is not idle, so that it can
+ * If not SMT, cede processor. If CPU is running SMT
+ * cede if the other thread is not idle, so that it can
* go single-threaded. If the other thread is idle,
* we ask the hypervisor if it has pending work it
* wants to do and cede if it does. Otherwise we keep
@@ -514,7 +515,8 @@ static void pseries_dedicated_idle_sleep(void)
* very low priority. The cede enables interrupts, which
* doesn't matter here.
*/
- if (!lppaca[cpu ^ 1].idle || poll_pending() == H_PENDING)
+ if (!cpu_has_feature(CPU_FTR_SMT) || !lppaca[cpu ^ 1].idle
+ || poll_pending() == H_PENDING)
cede_processor();
out:
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 09:32:57 +0000