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authorDavid S. Miller <davem@davemloft.net>2011-11-18 07:44:58 +0100
committerDavid S. Miller <davem@davemloft.net>2011-11-18 07:44:58 +0100
commit0b64120cceb86e93cb1bda0dc055f13016646907 (patch)
tree5dcd3444fc219e5b9774734d846b655e0776575b /arch/sparc/kernel/setup_64.c
parentsparc: Kill custom io_remap_pfn_range(). (diff)
downloadlinux-0b64120cceb86e93cb1bda0dc055f13016646907.tar.xz
linux-0b64120cceb86e93cb1bda0dc055f13016646907.zip
sparc64: Patch sun4v code sequences properly on module load.
Some of the sun4v code patching occurs in inline functions visible to, and usable by, modules. Therefore we have to patch them up during module load. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
-rw-r--r--arch/sparc/kernel/setup_64.c48
1 files changed, 29 insertions, 19 deletions
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index c965595aa7e9..a854a1c240ff 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -234,40 +234,50 @@ void __init per_cpu_patch(void)
}
}
-void __init sun4v_patch(void)
+void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *start,
+ struct sun4v_1insn_patch_entry *end)
{
- extern void sun4v_hvapi_init(void);
- struct sun4v_1insn_patch_entry *p1;
- struct sun4v_2insn_patch_entry *p2;
-
- if (tlb_type != hypervisor)
- return;
+ while (start < end) {
+ unsigned long addr = start->addr;
- p1 = &__sun4v_1insn_patch;
- while (p1 < &__sun4v_1insn_patch_end) {
- unsigned long addr = p1->addr;
-
- *(unsigned int *) (addr + 0) = p1->insn;
+ *(unsigned int *) (addr + 0) = start->insn;
wmb();
__asm__ __volatile__("flush %0" : : "r" (addr + 0));
- p1++;
+ start++;
}
+}
- p2 = &__sun4v_2insn_patch;
- while (p2 < &__sun4v_2insn_patch_end) {
- unsigned long addr = p2->addr;
+void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *start,
+ struct sun4v_2insn_patch_entry *end)
+{
+ while (start < end) {
+ unsigned long addr = start->addr;
- *(unsigned int *) (addr + 0) = p2->insns[0];
+ *(unsigned int *) (addr + 0) = start->insns[0];
wmb();
__asm__ __volatile__("flush %0" : : "r" (addr + 0));
- *(unsigned int *) (addr + 4) = p2->insns[1];
+ *(unsigned int *) (addr + 4) = start->insns[1];
wmb();
__asm__ __volatile__("flush %0" : : "r" (addr + 4));
- p2++;
+ start++;
}
+}
+
+void __init sun4v_patch(void)
+{
+ extern void sun4v_hvapi_init(void);
+
+ if (tlb_type != hypervisor)
+ return;
+
+ sun4v_patch_1insn_range(&__sun4v_1insn_patch,
+ &__sun4v_1insn_patch_end);
+
+ sun4v_patch_2insn_range(&__sun4v_2insn_patch,
+ &__sun4v_2insn_patch_end);
sun4v_hvapi_init();
}