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authorIngo Molnar <mingo@kernel.org>2013-08-29 12:02:08 +0200
committerIngo Molnar <mingo@kernel.org>2013-08-29 12:02:08 +0200
commitaee2bce3cfdcb9bf2c51c24496ee776e8202ed11 (patch)
tree66ff8e345cf693cfb39383f25ad796e2f59ab6ad /arch/powerpc
parent5ec4c599a52362896c3e7c6a31ba6145dca9c6f5 (diff)
parentc95389b4cd6a4b52af78bea706a274453e886251 (diff)
downloadlinux-aee2bce3cfdcb9bf2c51c24496ee776e8202ed11.tar.bz2
Merge branch 'linus' into perf/core
Pick up the latest upstream fixes. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/Kconfig1
-rw-r--r--arch/powerpc/include/asm/page.h10
-rw-r--r--arch/powerpc/kernel/lparcfg.c22
3 files changed, 20 insertions, 13 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index dbd9d3c991e8..9cf59816d3e9 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -979,6 +979,7 @@ config RELOCATABLE
must live at a different physical address than the primary
kernel.
+# This value must have zeroes in the bottom 60 bits otherwise lots will break
config PAGE_OFFSET
hex
default "0xc000000000000000"
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index 988c812aab5b..b9f426212d3a 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -211,9 +211,19 @@ extern long long virt_phys_offset;
#define __va(x) ((void *)(unsigned long)((phys_addr_t)(x) + VIRT_PHYS_OFFSET))
#define __pa(x) ((unsigned long)(x) - VIRT_PHYS_OFFSET)
#else
+#ifdef CONFIG_PPC64
+/*
+ * gcc miscompiles (unsigned long)(&static_var) - PAGE_OFFSET
+ * with -mcmodel=medium, so we use & and | instead of - and + on 64-bit.
+ */
+#define __va(x) ((void *)(unsigned long)((phys_addr_t)(x) | PAGE_OFFSET))
+#define __pa(x) ((unsigned long)(x) & 0x0fffffffffffffffUL)
+
+#else /* 32-bit, non book E */
#define __va(x) ((void *)(unsigned long)((phys_addr_t)(x) + PAGE_OFFSET - MEMORY_START))
#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET + MEMORY_START)
#endif
+#endif
/*
* Unfortunately the PLT is in the BSS in the PPC32 ELF ABI,
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index d92f3871e9cf..e2a0a162299b 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -35,7 +35,13 @@
#include <asm/vdso_datapage.h>
#include <asm/vio.h>
#include <asm/mmu.h>
+#include <asm/machdep.h>
+
+/*
+ * This isn't a module but we expose that to userspace
+ * via /proc so leave the definitions here
+ */
#define MODULE_VERS "1.9"
#define MODULE_NAME "lparcfg"
@@ -418,7 +424,8 @@ static void parse_em_data(struct seq_file *m)
{
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
- if (plpar_hcall(H_GET_EM_PARMS, retbuf) == H_SUCCESS)
+ if (firmware_has_feature(FW_FEATURE_LPAR) &&
+ plpar_hcall(H_GET_EM_PARMS, retbuf) == H_SUCCESS)
seq_printf(m, "power_mode_data=%016lx\n", retbuf[0]);
}
@@ -677,7 +684,6 @@ static int lparcfg_open(struct inode *inode, struct file *file)
}
static const struct file_operations lparcfg_fops = {
- .owner = THIS_MODULE,
.read = seq_read,
.write = lparcfg_write,
.open = lparcfg_open,
@@ -699,14 +705,4 @@ static int __init lparcfg_init(void)
}
return 0;
}
-
-static void __exit lparcfg_cleanup(void)
-{
- remove_proc_subtree("powerpc/lparcfg", NULL);
-}
-
-module_init(lparcfg_init);
-module_exit(lparcfg_cleanup);
-MODULE_DESCRIPTION("Interface for LPAR configuration data");
-MODULE_AUTHOR("Dave Engebretsen");
-MODULE_LICENSE("GPL");
+machine_device_initcall(pseries, lparcfg_init);