Merge tag 'powerpc-6.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix vmemmap altmap boundary check which could cause memory hotunplug
failure
- Create a dummy stackframe to fix ftrace stack unwind
- Fix secondary thread bringup for Book3E ELFv2 kernels
- Use early_ioremap/unmap() in via_calibrate_decr()
Thanks to Aneesh Kumar K.V, Benjamin Gray, Christophe Leroy, David
Hildenbrand, and Naveen N Rao.
* tag 'powerpc-6.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/powermac: Use early_* IO variants in via_calibrate_decr()
powerpc/64e: Fix secondary thread bringup for ELFv2 kernels
powerpc/ftrace: Create a dummy stackframe to fix stack unwind
powerpc/mm/altmap: Fix altmap boundary check
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index f132d87..6440b1b 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -375,8 +375,7 @@
beq 20f
/* start the specified thread */
- LOAD_REG_ADDR(r5, fsl_secondary_thread_init)
- ld r4, 0(r5)
+ LOAD_REG_ADDR(r5, DOTSYM(fsl_secondary_thread_init))
bl book3e_start_thread
/* stop the current thread */
diff --git a/arch/powerpc/kernel/trace/ftrace_mprofile.S b/arch/powerpc/kernel/trace/ftrace_mprofile.S
index ffb1db3..1f7d86d 100644
--- a/arch/powerpc/kernel/trace/ftrace_mprofile.S
+++ b/arch/powerpc/kernel/trace/ftrace_mprofile.S
@@ -33,6 +33,9 @@
* and then arrange for the ftrace function to be called.
*/
.macro ftrace_regs_entry allregs
+ /* Create a minimal stack frame for representing B */
+ PPC_STLU r1, -STACK_FRAME_MIN_SIZE(r1)
+
/* Create our stack frame + pt_regs */
PPC_STLU r1,-SWITCH_FRAME_SIZE(r1)
@@ -42,7 +45,7 @@
#ifdef CONFIG_PPC64
/* Save the original return address in A's stack frame */
- std r0, LRSAVE+SWITCH_FRAME_SIZE(r1)
+ std r0, LRSAVE+SWITCH_FRAME_SIZE+STACK_FRAME_MIN_SIZE(r1)
/* Ok to continue? */
lbz r3, PACA_FTRACE_ENABLED(r13)
cmpdi r3, 0
@@ -77,6 +80,8 @@
mflr r7
/* Save it as pt_regs->nip */
PPC_STL r7, _NIP(r1)
+ /* Also save it in B's stackframe header for proper unwind */
+ PPC_STL r7, LRSAVE+SWITCH_FRAME_SIZE(r1)
/* Save the read LR in pt_regs->link */
PPC_STL r0, _LINK(r1)
@@ -142,7 +147,7 @@
#endif
/* Pop our stack frame */
- addi r1, r1, SWITCH_FRAME_SIZE
+ addi r1, r1, SWITCH_FRAME_SIZE+STACK_FRAME_MIN_SIZE
#ifdef CONFIG_LIVEPATCH_64
/* Based on the cmpd above, if the NIP was altered handle livepatch */
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index fe1b830..0ec5b45 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -314,8 +314,7 @@
start = ALIGN_DOWN(start, page_size);
if (altmap) {
alt_start = altmap->base_pfn;
- alt_end = altmap->base_pfn + altmap->reserve +
- altmap->free + altmap->alloc + altmap->align;
+ alt_end = altmap->base_pfn + altmap->reserve + altmap->free;
}
pr_debug("vmemmap_free %lx...%lx\n", start, end);
diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c
index 9c43cf3..40aa582 100644
--- a/arch/powerpc/platforms/85xx/smp.c
+++ b/arch/powerpc/platforms/85xx/smp.c
@@ -180,7 +180,7 @@
unsigned long inia;
int cpu = *(const int *)info;
- inia = *(unsigned long *)fsl_secondary_thread_init;
+ inia = ppc_function_entry(fsl_secondary_thread_init);
book3e_start_thread(cpu_thread_in_core(cpu), inia);
}
#endif
diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c
index 4c5790a..8633891 100644
--- a/arch/powerpc/platforms/powermac/time.c
+++ b/arch/powerpc/platforms/powermac/time.c
@@ -26,8 +26,8 @@
#include <linux/rtc.h>
#include <linux/of_address.h>
+#include <asm/early_ioremap.h>
#include <asm/sections.h>
-#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/time.h>
#include <asm/nvram.h>
@@ -182,7 +182,7 @@
return 0;
}
of_node_put(vias);
- via = ioremap(rsrc.start, resource_size(&rsrc));
+ via = early_ioremap(rsrc.start, resource_size(&rsrc));
if (via == NULL) {
printk(KERN_ERR "Failed to map VIA for timer calibration !\n");
return 0;
@@ -207,7 +207,7 @@
ppc_tb_freq = (dstart - dend) * 100 / 6;
- iounmap(via);
+ early_iounmap((void *)via, resource_size(&rsrc));
return 1;
}
