Commit 1573d2ca authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'parisc-4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc fixes from Helge Deller:
 "Some final updates and fixes for this merge window for the parisc
  architecture. Changes include:

   - Fix boot problems with new memblock allocator on rp3410 machine

   - Increase initial kernel mapping size for 32- and 64-bit kernels,
     this allows to boot bigger kernels which have many modules built-in

   - Fix kernel layout regarding __gp and move exception table into RO
     section

   - Show trap names in crashes, use extable.h header instead of
     module.h"

* 'parisc-4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Show trap name in kernel crash
  parisc: Zero-initialize newly alloced memblock
  parisc: Move exception table into read-only section
  parisc: Fix kernel memory layout regarding position of __gp
  parisc: Increase initial kernel mapping size
  parisc: Migrate exception table users off module.h and onto extable.h
parents 4cdf8dbe 0a862485
...@@ -83,10 +83,10 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr) ...@@ -83,10 +83,10 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, (unsigned long)pgd_val(e)) printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, (unsigned long)pgd_val(e))
/* This is the size of the initially mapped kernel memory */ /* This is the size of the initially mapped kernel memory */
#if defined(CONFIG_64BIT) || defined(CONFIG_SMP) #if defined(CONFIG_64BIT)
#define KERNEL_INITIAL_ORDER 25 /* 1<<25 = 32MB */ #define KERNEL_INITIAL_ORDER 26 /* 1<<26 = 64MB */
#else #else
#define KERNEL_INITIAL_ORDER 24 /* 1<<24 = 16MB */ #define KERNEL_INITIAL_ORDER 25 /* 1<<25 = 32MB */
#endif #endif
#define KERNEL_INITIAL_SIZE (1 << KERNEL_INITIAL_ORDER) #define KERNEL_INITIAL_SIZE (1 << KERNEL_INITIAL_ORDER)
......
...@@ -11,6 +11,7 @@ void parisc_terminate(char *msg, struct pt_regs *regs, ...@@ -11,6 +11,7 @@ void parisc_terminate(char *msg, struct pt_regs *regs,
void die_if_kernel(char *str, struct pt_regs *regs, long err); void die_if_kernel(char *str, struct pt_regs *regs, long err);
/* mm/fault.c */ /* mm/fault.c */
const char *trap_name(unsigned long code);
void do_page_fault(struct pt_regs *regs, unsigned long code, void do_page_fault(struct pt_regs *regs, unsigned long code,
unsigned long address); unsigned long address);
#endif #endif
......
...@@ -458,8 +458,8 @@ void parisc_terminate(char *msg, struct pt_regs *regs, int code, unsigned long o ...@@ -458,8 +458,8 @@ void parisc_terminate(char *msg, struct pt_regs *regs, int code, unsigned long o
} }
printk("\n"); printk("\n");
printk(KERN_CRIT "%s: Code=%d regs=%p (Addr=" RFMT ")\n", pr_crit("%s: Code=%d (%s) regs=%p (Addr=" RFMT ")\n",
msg, code, regs, offset); msg, code, trap_name(code), regs, offset);
show_regs(regs); show_regs(regs);
spin_unlock(&terminate_lock); spin_unlock(&terminate_lock);
......
...@@ -90,8 +90,9 @@ SECTIONS ...@@ -90,8 +90,9 @@ SECTIONS
/* Start of data section */ /* Start of data section */
_sdata = .; _sdata = .;
RO_DATA_SECTION(8) /* Architecturally we need to keep __gp below 0x1000000 and thus
* in front of RO_DATA_SECTION() which stores lots of tracepoint
* and ftrace symbols. */
#ifdef CONFIG_64BIT #ifdef CONFIG_64BIT
. = ALIGN(16); . = ALIGN(16);
/* Linkage tables */ /* Linkage tables */
...@@ -106,6 +107,12 @@ SECTIONS ...@@ -106,6 +107,12 @@ SECTIONS
} }
#endif #endif
RO_DATA_SECTION(8)
/* RO because of BUILDTIME_EXTABLE_SORT */
EXCEPTION_TABLE(8)
NOTES
/* unwind info */ /* unwind info */
.PARISC.unwind : { .PARISC.unwind : {
__start___unwind = .; __start___unwind = .;
...@@ -121,9 +128,6 @@ SECTIONS ...@@ -121,9 +128,6 @@ SECTIONS
. = ALIGN(HUGEPAGE_SIZE); . = ALIGN(HUGEPAGE_SIZE);
data_start = .; data_start = .;
EXCEPTION_TABLE(8)
NOTES
/* Data */ /* Data */
RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE) RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, PAGE_SIZE)
......
...@@ -14,7 +14,7 @@ ...@@ -14,7 +14,7 @@
#include <linux/ptrace.h> #include <linux/ptrace.h>
#include <linux/sched.h> #include <linux/sched.h>
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/module.h> #include <linux/extable.h>
#include <linux/uaccess.h> #include <linux/uaccess.h>
#include <asm/traps.h> #include <asm/traps.h>
...@@ -204,6 +204,16 @@ static const char * const trap_description[] = { ...@@ -204,6 +204,16 @@ static const char * const trap_description[] = {
[28] "Unaligned data reference trap", [28] "Unaligned data reference trap",
}; };
const char *trap_name(unsigned long code)
{
const char *t = NULL;
if (code < ARRAY_SIZE(trap_description))
t = trap_description[code];
return t ? t : "Unknown trap";
}
/* /*
* Print out info about fatal segfaults, if the show_unhandled_signals * Print out info about fatal segfaults, if the show_unhandled_signals
* sysctl is set: * sysctl is set:
...@@ -213,8 +223,6 @@ show_signal_msg(struct pt_regs *regs, unsigned long code, ...@@ -213,8 +223,6 @@ show_signal_msg(struct pt_regs *regs, unsigned long code,
unsigned long address, struct task_struct *tsk, unsigned long address, struct task_struct *tsk,
struct vm_area_struct *vma) struct vm_area_struct *vma)
{ {
const char *trap_name = NULL;
if (!unhandled_signal(tsk, SIGSEGV)) if (!unhandled_signal(tsk, SIGSEGV))
return; return;
...@@ -226,10 +234,7 @@ show_signal_msg(struct pt_regs *regs, unsigned long code, ...@@ -226,10 +234,7 @@ show_signal_msg(struct pt_regs *regs, unsigned long code,
tsk->comm, code, address); tsk->comm, code, address);
print_vma_addr(KERN_CONT " in ", regs->iaoq[0]); print_vma_addr(KERN_CONT " in ", regs->iaoq[0]);
if (code < ARRAY_SIZE(trap_description)) pr_cont(" trap #%lu: %s%c", code, trap_name(code),
trap_name = trap_description[code];
pr_warn(KERN_CONT " trap #%lu: %s%c", code,
trap_name ? trap_name : "unknown",
vma ? ',':'\n'); vma ? ',':'\n');
if (vma) if (vma)
......
...@@ -105,6 +105,8 @@ static void * __init get_memblock(unsigned long size) ...@@ -105,6 +105,8 @@ static void * __init get_memblock(unsigned long size)
else else
panic("get_memblock() failed.\n"); panic("get_memblock() failed.\n");
memset(__va(phys), 0, size);
return __va(phys); return __va(phys);
} }
......
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