Merge branch 'parisc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc updates from Helge Deller:
 "Changes include:

   - Fix boot of 32bit SMP kernel (initial kernel mapping was too small)

   - Added hardened usercopy checks

   - Drop bootmem and switch to memblock and NO_BOOTMEM implementation

   - Drop the BROKEN_RODATA config option (and thus remove the relevant
     code from the generic headers and files because parisc was the last
     architecture which used this config option)

   - Improve segfault reporting by printing human readable error strings

   - Various smaller changes, e.g. dwarf debug support for assembly
     code, update comments regarding copy_user_page_asm, switch to
     kmalloc_array()"

* 'parisc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Increase KERNEL_INITIAL_SIZE for 32-bit SMP kernels
  parisc: Drop bootmem and switch to memblock
  parisc: Add hardened usercopy feature
  parisc: Add cfi_startproc and cfi_endproc to assembly code
  parisc: Move hpmc stack into page aligned bss section
  parisc: Fix self-detected CPU stall warnings on Mako machines
  parisc: Report trap type as human readable string
  parisc: Update comment regarding implementation of copy_user_page_asm
  parisc: Use kmalloc_array() in add_system_map_addresses()
  parisc: Check return value of smp_boot_one_cpu()
  parisc: Drop BROKEN_RODATA config option

9 files changed, 104 insertions, 88 deletions

diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index baa3d9d6e971..4fcff2dcc9c3 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -766,7 +766,7 @@ ENTRY(end_fault_vector)
 	 * copy_thread moved args into task save area.
 	 */
 
-ENTRY(ret_from_kernel_thread)
+ENTRY_CFI(ret_from_kernel_thread)
 
 	/* Call schedule_tail first though */
 	BL	schedule_tail, %r2
@@ -782,7 +782,7 @@ ENTRY(ret_from_kernel_thread)
 	copy	%r31, %r2
 	b	finish_child_return
 	nop
-ENDPROC(ret_from_kernel_thread)
+ENDPROC_CFI(ret_from_kernel_thread)
 
 
 	/*
@@ -790,7 +790,7 @@ ENDPROC(ret_from_kernel_thread)
 	 *	struct task_struct *next)
 	 *
 	 * switch kernel stacks and return prev */
-ENTRY(_switch_to)
+ENTRY_CFI(_switch_to)
 	STREG	 %r2, -RP_OFFSET(%r30)
 
 	callee_save_float
@@ -815,7 +815,7 @@ _switch_to_ret:
 	LDREG	-RP_OFFSET(%r30), %r2
 	bv	%r0(%r2)
 	copy	%r26, %r28
-ENDPROC(_switch_to)
+ENDPROC_CFI(_switch_to)
 
 	/*
 	 * Common rfi return path for interruptions, kernel execve, and
@@ -833,7 +833,7 @@ ENDPROC(_switch_to)
 
 	.align	PAGE_SIZE
 
-ENTRY(syscall_exit_rfi)
+ENTRY_CFI(syscall_exit_rfi)
 	mfctl   %cr30,%r16
 	LDREG	TI_TASK(%r16), %r16	/* thread_info -> task_struct */
 	ldo	TASK_REGS(%r16),%r16
@@ -1037,12 +1037,12 @@ intr_extint:
 
 	b	do_cpu_irq_mask
 	ldo	R%intr_return(%r2), %r2	/* return to intr_return, not here */
-ENDPROC(syscall_exit_rfi)
+ENDPROC_CFI(syscall_exit_rfi)
 
 
 	/* Generic interruptions (illegal insn, unaligned, page fault, etc) */
 
-ENTRY(intr_save)		/* for os_hpmc */
+ENTRY_CFI(intr_save)		/* for os_hpmc */
 	mfsp    %sr7,%r16
 	cmpib,COND(=),n 0,%r16,1f
 	get_stack_use_cr30
@@ -1117,7 +1117,7 @@ skip_save_ior:
 
 	b		handle_interruption
 	ldo		R%intr_check_sig(%r2), %r2
-ENDPROC(intr_save)
+ENDPROC_CFI(intr_save)
 
 
 	/*
@@ -1720,7 +1720,7 @@ dtlb_fault:
 	.endm
 
 	.macro	fork_like name
-ENTRY(sys_\name\()_wrapper)
+ENTRY_CFI(sys_\name\()_wrapper)
 	LDREG	TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30), %r1
 	ldo	TASK_REGS(%r1),%r1
 	reg_save %r1
@@ -1728,7 +1728,7 @@ ENTRY(sys_\name\()_wrapper)
 	ldil	L%sys_\name, %r31
 	be	R%sys_\name(%sr4,%r31)
 	STREG	%r28, PT_CR27(%r1)
-ENDPROC(sys_\name\()_wrapper)
+ENDPROC_CFI(sys_\name\()_wrapper)
 	.endm
 
 fork_like clone
@@ -1736,7 +1736,7 @@ fork_like fork
 fork_like vfork
 
 	/* Set the return value for the child */
-ENTRY(child_return)
+ENTRY_CFI(child_return)
 	BL	schedule_tail, %r2
 	nop
 finish_child_return:
@@ -1748,9 +1748,9 @@ finish_child_return:
 	reg_restore %r1
 	b	syscall_exit
 	copy	%r0,%r28
-ENDPROC(child_return)
+ENDPROC_CFI(child_return)
 
-ENTRY(sys_rt_sigreturn_wrapper)
+ENTRY_CFI(sys_rt_sigreturn_wrapper)
 	LDREG	TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r26
 	ldo	TASK_REGS(%r26),%r26	/* get pt regs */
 	/* Don't save regs, we are going to restore them from sigcontext. */
@@ -1778,9 +1778,9 @@ ENTRY(sys_rt_sigreturn_wrapper)
 	 */
 	bv	%r0(%r2)
 	LDREG	PT_GR28(%r1),%r28  /* reload original r28 for syscall_exit */
-ENDPROC(sys_rt_sigreturn_wrapper)
+ENDPROC_CFI(sys_rt_sigreturn_wrapper)
 
-ENTRY(syscall_exit)
+ENTRY_CFI(syscall_exit)
 	/* NOTE: Not all syscalls exit this way.  rt_sigreturn will exit
 	 * via syscall_exit_rfi if the signal was received while the process
 	 * was running.
@@ -1979,7 +1979,7 @@ syscall_do_resched:
 #else
 	nop
 #endif
-ENDPROC(syscall_exit)
+ENDPROC_CFI(syscall_exit)
 
 
 #ifdef CONFIG_FUNCTION_TRACER
@@ -2023,7 +2023,7 @@ ENDPROC(mcount)
 	.align 8
 	.globl return_to_handler
 	.type  return_to_handler, @function
-ENTRY(return_to_handler)
+ENTRY_CFI(return_to_handler)
 	.proc
 	.callinfo caller,frame=FRAME_SIZE
 	.entry
@@ -2067,7 +2067,7 @@ parisc_return_to_handler:
 	LDREGM -FRAME_SIZE(%sp),%r3
 	.exit
 	.procend
-ENDPROC(return_to_handler)
+ENDPROC_CFI(return_to_handler)
 
 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */
 
@@ -2076,7 +2076,7 @@ ENDPROC(return_to_handler)
 #ifdef CONFIG_IRQSTACKS
 /* void call_on_stack(unsigned long param1, void *func,
 		      unsigned long new_stack) */
-ENTRY(call_on_stack)
+ENTRY_CFI(call_on_stack)
 	copy	%sp, %r1
 
 	/* Regarding the HPPA calling conventions for function pointers,
@@ -2112,10 +2112,10 @@ ENTRY(call_on_stack)
 	bv	(%rp)
 	LDREG	-68(%sp), %sp
 # endif /* CONFIG_64BIT */
-ENDPROC(call_on_stack)
+ENDPROC_CFI(call_on_stack)
 #endif /* CONFIG_IRQSTACKS */
 
-get_register:
+ENTRY_CFI(get_register)
 	/*
 	 * get_register is used by the non access tlb miss handlers to
 	 * copy the value of the general register specified in r8 into
@@ -2192,9 +2192,10 @@ get_register:
 	copy    %r30,%r1
 	bv      %r0(%r25)    /* r31 */
 	copy    %r31,%r1
+ENDPROC_CFI(get_register)
 
 
-set_register:
+ENTRY_CFI(set_register)
 	/*
 	 * set_register is used by the non access tlb miss handlers to
 	 * copy the value of r1 into the general register specified in
@@ -2266,4 +2267,5 @@ set_register:
 	copy    %r1,%r30
 	bv      %r0(%r25)    /* r31 */
 	copy    %r1,%r31
+ENDPROC_CFI(set_register)
 
diff --git a/arch/parisc/kernel/hpmc.S b/arch/parisc/kernel/hpmc.S
index e158b6fbf1b4..0fbd0a0e1cda 100644
--- a/arch/parisc/kernel/hpmc.S
+++ b/arch/parisc/kernel/hpmc.S
@@ -41,12 +41,12 @@
  */
 
 	.level		1.1
-	.data
 
 #include <asm/assembly.h>
 #include <asm/pdc.h>
 
 #include <linux/linkage.h>
+#include <linux/init.h>
 
 	/*
 	 * stack for os_hpmc, the HPMC handler.
@@ -55,22 +55,26 @@
 	 * IODC requires 7K byte stack.  That leaves 1K byte for os_hpmc.
 	 */
 
+	__PAGE_ALIGNED_BSS
 	.align 4096
 hpmc_stack:
 	.block 16384
 
 #define HPMC_IODC_BUF_SIZE 0x8000
 
+	__PAGE_ALIGNED_BSS
 	.align 4096
 hpmc_iodc_buf:
 	.block HPMC_IODC_BUF_SIZE
 
+	.section .bss
 	.align 8
 hpmc_raddr:
 	.block 128
 
 #define HPMC_PIM_DATA_SIZE 896 /* Enough to hold all architected 2.0 state */
 
+	.section .bss
 	.align 8
 ENTRY(hpmc_pim_data)
 	.block HPMC_PIM_DATA_SIZE
@@ -79,7 +83,7 @@ END(hpmc_pim_data)
 	.text
 
 	.import intr_save, code
-ENTRY(os_hpmc)
+ENTRY_CFI(os_hpmc)
 .os_hpmc:
 
 	/*
@@ -295,11 +299,11 @@ os_hpmc_6:
 
 	b .
 	nop
-ENDPROC(os_hpmc)
+ENDPROC_CFI(os_hpmc)
 .os_hpmc_end:
-	nop
-.data
-.align 4
+
+
+	__INITRODATA
 	.export os_hpmc_size
 os_hpmc_size:
 	.word .os_hpmc_end-.os_hpmc
diff --git a/arch/parisc/kernel/inventory.c b/arch/parisc/kernel/inventory.c
index f0b6722fc706..545f9d2fe711 100644
--- a/arch/parisc/kernel/inventory.c
+++ b/arch/parisc/kernel/inventory.c
@@ -506,7 +506,7 @@ add_system_map_addresses(struct parisc_device *dev, int num_addrs,
 	long status;
 	struct pdc_system_map_addr_info addr_result;
 
-	dev->addr = kmalloc(num_addrs * sizeof(unsigned long), GFP_KERNEL);
+	dev->addr = kmalloc_array(num_addrs, sizeof(*dev->addr), GFP_KERNEL);
 	if(!dev->addr) {
 		printk(KERN_ERR "%s %s(): memory allocation failure\n",
 		       __FILE__, __func__);
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index b743a80eaba0..985e06da37f5 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -41,7 +41,7 @@
 	.text
 	.align	128
 
-ENTRY(flush_tlb_all_local)
+ENTRY_CFI(flush_tlb_all_local)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -190,11 +190,11 @@ fdtdone:
 
 	.exit
 	.procend
-ENDPROC(flush_tlb_all_local)
+ENDPROC_CFI(flush_tlb_all_local)
 
 	.import cache_info,data
 
-ENTRY(flush_instruction_cache_local)
+ENTRY_CFI(flush_instruction_cache_local)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -257,11 +257,11 @@ fisync:
 	.exit
 
 	.procend
-ENDPROC(flush_instruction_cache_local)
+ENDPROC_CFI(flush_instruction_cache_local)
 
 
 	.import cache_info, data
-ENTRY(flush_data_cache_local)
+ENTRY_CFI(flush_data_cache_local)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -325,7 +325,7 @@ fdsync:
 	.exit
 
 	.procend
-ENDPROC(flush_data_cache_local)
+ENDPROC_CFI(flush_data_cache_local)
 
 	.align	16
 
@@ -356,7 +356,7 @@ ENDPROC(flush_data_cache_local)
 
 /* Clear page using kernel mapping.  */
 
-ENTRY(clear_page_asm)
+ENTRY_CFI(clear_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -422,11 +422,11 @@ ENTRY(clear_page_asm)
 	.exit
 
 	.procend
-ENDPROC(clear_page_asm)
+ENDPROC_CFI(clear_page_asm)
 
 /* Copy page using kernel mapping.  */
 
-ENTRY(copy_page_asm)
+ENTRY_CFI(copy_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -540,7 +540,7 @@ ENTRY(copy_page_asm)
 	.exit
 
 	.procend
-ENDPROC(copy_page_asm)
+ENDPROC_CFI(copy_page_asm)
 
 /*
  * NOTE: Code in clear_user_page has a hard coded dependency on the
@@ -573,11 +573,17 @@ ENDPROC(copy_page_asm)
 	.endm
 
 	/*
-	 * We can't do this since copy_user_page is used to bring in
-	 * file data that might have instructions. Since the data would
-	 * then need to be flushed out so the i-fetch can see it, it
-	 * makes more sense to just copy through the kernel translation
-	 * and flush it.
+	 * copy_user_page_asm() performs a page copy using mappings
+	 * equivalent to the user page mappings.  It can be used to
+	 * implement copy_user_page() but unfortunately both the `from'
+	 * and `to' pages need to be flushed through mappings equivalent
+	 * to the user mappings after the copy because the kernel accesses
+	 * the `from' page through the kmap kernel mapping and the `to'
+	 * page needs to be flushed since code can be copied.  As a
+	 * result, this implementation is less efficient than the simpler
+	 * copy using the kernel mapping.  It only needs the `from' page
+	 * to flushed via the user mapping.  The kunmap routines handle
+	 * the flushes needed for the kernel mapping.
 	 *
 	 * I'm still keeping this around because it may be possible to
 	 * use it if more information is passed into copy_user_page().
@@ -586,7 +592,7 @@ ENDPROC(copy_page_asm)
 	 *
 	 */
 
-ENTRY(copy_user_page_asm)
+ENTRY_CFI(copy_user_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -742,9 +748,9 @@ ENTRY(copy_user_page_asm)
 	.exit
 
 	.procend
-ENDPROC(copy_user_page_asm)
+ENDPROC_CFI(copy_user_page_asm)
 
-ENTRY(clear_user_page_asm)
+ENTRY_CFI(clear_user_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -828,9 +834,9 @@ ENTRY(clear_user_page_asm)
 	.exit
 
 	.procend
-ENDPROC(clear_user_page_asm)
+ENDPROC_CFI(clear_user_page_asm)
 
-ENTRY(flush_dcache_page_asm)
+ENTRY_CFI(flush_dcache_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -904,9 +910,9 @@ ENTRY(flush_dcache_page_asm)
 	.exit
 
 	.procend
-ENDPROC(flush_dcache_page_asm)
+ENDPROC_CFI(flush_dcache_page_asm)
 
-ENTRY(flush_icache_page_asm)
+ENTRY_CFI(flush_icache_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -982,9 +988,9 @@ ENTRY(flush_icache_page_asm)
 	.exit
 
 	.procend
-ENDPROC(flush_icache_page_asm)
+ENDPROC_CFI(flush_icache_page_asm)
 
-ENTRY(flush_kernel_dcache_page_asm)
+ENTRY_CFI(flush_kernel_dcache_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -1025,9 +1031,9 @@ ENTRY(flush_kernel_dcache_page_asm)
 	.exit
 
 	.procend
-ENDPROC(flush_kernel_dcache_page_asm)
+ENDPROC_CFI(flush_kernel_dcache_page_asm)
 
-ENTRY(purge_kernel_dcache_page_asm)
+ENTRY_CFI(purge_kernel_dcache_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -1067,9 +1073,9 @@ ENTRY(purge_kernel_dcache_page_asm)
 	.exit
 
 	.procend
-ENDPROC(purge_kernel_dcache_page_asm)
+ENDPROC_CFI(purge_kernel_dcache_page_asm)
 
-ENTRY(flush_user_dcache_range_asm)
+ENTRY_CFI(flush_user_dcache_range_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -1088,9 +1094,9 @@ ENTRY(flush_user_dcache_range_asm)
 	.exit
 
 	.procend
-ENDPROC(flush_user_dcache_range_asm)
+ENDPROC_CFI(flush_user_dcache_range_asm)
 
-ENTRY(flush_kernel_dcache_range_asm)
+ENTRY_CFI(flush_kernel_dcache_range_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -1110,9 +1116,9 @@ ENTRY(flush_kernel_dcache_range_asm)
 	.exit
 
 	.procend
-ENDPROC(flush_kernel_dcache_range_asm)
+ENDPROC_CFI(flush_kernel_dcache_range_asm)
 
-ENTRY(flush_user_icache_range_asm)
+ENTRY_CFI(flush_user_icache_range_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -1131,9 +1137,9 @@ ENTRY(flush_user_icache_range_asm)
 	.exit
 
 	.procend
-ENDPROC(flush_user_icache_range_asm)
+ENDPROC_CFI(flush_user_icache_range_asm)
 
-ENTRY(flush_kernel_icache_page)
+ENTRY_CFI(flush_kernel_icache_page)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -1174,9 +1180,9 @@ ENTRY(flush_kernel_icache_page)
 	.exit
 
 	.procend
-ENDPROC(flush_kernel_icache_page)
+ENDPROC_CFI(flush_kernel_icache_page)
 
-ENTRY(flush_kernel_icache_range_asm)
+ENTRY_CFI(flush_kernel_icache_range_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -1194,13 +1200,13 @@ ENTRY(flush_kernel_icache_range_asm)
 	nop
 	.exit
 	.procend
-ENDPROC(flush_kernel_icache_range_asm)
+ENDPROC_CFI(flush_kernel_icache_range_asm)
 
 	/* align should cover use of rfi in disable_sr_hashing_asm and
 	 * srdis_done.
 	 */
 	.align	256
-ENTRY(disable_sr_hashing_asm)
+ENTRY_CFI(disable_sr_hashing_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -1289,6 +1295,6 @@ srdis_done:
 	.exit
 
 	.procend
-ENDPROC(disable_sr_hashing_asm)
+ENDPROC_CFI(disable_sr_hashing_asm)
 
 	.end
diff --git a/arch/parisc/kernel/real2.S b/arch/parisc/kernel/real2.S
index 5f3d3a1f9037..1db58e546230 100644
--- a/arch/parisc/kernel/real2.S
+++ b/arch/parisc/kernel/real2.S
@@ -61,7 +61,7 @@ save_cr_end:
 	 *	iodc_fn is the IODC function to call
 	 */
 
-ENTRY(real32_call_asm)
+ENTRY_CFI(real32_call_asm)
 	STREG	%rp, -RP_OFFSET(%sp)	/* save RP */
 #ifdef CONFIG_64BIT
 	callee_save
@@ -119,14 +119,14 @@ ric_ret:
 	LDREG	-RP_OFFSET(%sp), %rp	/* restore RP */
 	bv	0(%rp)
 	nop
-ENDPROC(real32_call_asm)
+ENDPROC_CFI(real32_call_asm)
 
 
 #  define PUSH_CR(r, where) mfctl r, %r1 ! STREG,ma %r1, REG_SZ(where)
 #  define POP_CR(r, where) LDREG,mb -REG_SZ(where), %r1 ! mtctl %r1, r
 
 	.text
-save_control_regs:
+ENTRY_CFI(save_control_regs)
 	load32	PA(save_cr_space), %r28
 	PUSH_CR(%cr24, %r28)
 	PUSH_CR(%cr25, %r28)
@@ -139,8 +139,9 @@ save_control_regs:
 	PUSH_CR(%cr15, %r28)
 	bv 0(%r2)
 	nop
+ENDPROC_CFI(save_control_regs)
 
-restore_control_regs:
+ENTRY_CFI(restore_control_regs)
 	load32	PA(save_cr_end), %r26
 	POP_CR(%cr15, %r26)
 	POP_CR(%cr31, %r26)
@@ -153,13 +154,14 @@ restore_control_regs:
 	POP_CR(%cr24, %r26)
 	bv 0(%r2)
 	nop
+ENDPROC_CFI(restore_control_regs)
 
 /* rfi_virt2real() and rfi_real2virt() could perhaps be adapted for
  * more general-purpose use by the several places which need RFIs
  */
 	.text
 	.align 128
-rfi_virt2real:
+ENTRY_CFI(rfi_virt2real)
 	/* switch to real mode... */
 	rsm		PSW_SM_I,%r0
 	load32		PA(rfi_v2r_1), %r1
@@ -191,10 +193,11 @@ rfi_v2r_1:
 	tophys_r1 %r2
 	bv	0(%r2)
 	nop
+ENDPROC_CFI(rfi_virt2real)
 
 	.text
 	.align 128
-rfi_real2virt:
+ENTRY_CFI(rfi_real2virt)
 	rsm		PSW_SM_I,%r0
 	load32		(rfi_r2v_1), %r1
 	nop
@@ -225,6 +228,7 @@ rfi_r2v_1:
 	tovirt_r1 %r2
 	bv	0(%r2)
 	nop
+ENDPROC_CFI(rfi_real2virt)
 
 #ifdef CONFIG_64BIT
 
@@ -238,7 +242,7 @@ rfi_r2v_1:
 	 *	arg0p points to where saved arg values may be found
 	 *	iodc_fn is the IODC function to call
 	 */
-ENTRY(real64_call_asm)
+ENTRY_CFI(real64_call_asm)
 	std	%rp, -0x10(%sp)		/* save RP */
 	std	%sp, -8(%arg0)		/* save SP on real-mode stack */
 	copy	%arg0, %sp		/* adopt the real-mode SP */
@@ -284,7 +288,7 @@ r64_ret:
 	ldd	-0x10(%sp), %rp		/* restore RP */
 	bv	0(%rp)
 	nop
-ENDPROC(real64_call_asm)
+ENDPROC_CFI(real64_call_asm)
 
 #endif
 
@@ -293,12 +297,12 @@ ENDPROC(real64_call_asm)
 	**	GCC 3.3 and later has a new function in libgcc.a for
 	**	comparing function pointers.
 	*/
-ENTRY(__canonicalize_funcptr_for_compare)
+ENTRY_CFI(__canonicalize_funcptr_for_compare)
 #ifdef CONFIG_64BIT
 	bve (%r2)
 #else
 	bv %r0(%r2)
 #endif
 	copy %r26,%r28
-ENDPROC(__canonicalize_funcptr_for_compare)
+ENDPROC_CFI(__canonicalize_funcptr_for_compare)
 
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index f7ea626e29c9..81d6f6391944 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -38,6 +38,7 @@
 #include <linux/export.h>
 
 #include <asm/processor.h>
+#include <asm/sections.h>
 #include <asm/pdc.h>
 #include <asm/led.h>
 #include <asm/machdep.h>	/* for pa7300lc_init() proto */
@@ -140,6 +141,13 @@ void __init setup_arch(char **cmdline_p)
 #endif
 	printk(KERN_CONT ".\n");
 
+	/*
+	 * Check if initial kernel page mappings are sufficient.
+	 * panic early if not, else we may access kernel functions
+	 * and variables which can't be reached.
+	 */
+	if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE)
+		panic("KERNEL_INITIAL_ORDER too small!");
 
 	pdc_console_init();
 
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index c2a9cc55a62f..75dab2871346 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -412,8 +412,8 @@ void smp_cpus_done(unsigned int cpu_max)
 
 int __cpu_up(unsigned int cpu, struct task_struct *tidle)
 {
-	if (cpu != 0 && cpu < parisc_max_cpus)
-		smp_boot_one_cpu(cpu, tidle);
+	if (cpu != 0 && cpu < parisc_max_cpus && smp_boot_one_cpu(cpu, tidle))
+		return -ENOSYS;
 
 	return cpu_online(cpu) ? 0 : -ENOSYS;
 }
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index 4b0b963d52a7..9b63b876a13a 100644
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -226,12 +226,6 @@ void __init start_cpu_itimer(void)
 	unsigned int cpu = smp_processor_id();
 	unsigned long next_tick = mfctl(16) + clocktick;
 
-#if defined(CONFIG_HAVE_UNSTABLE_SCHED_CLOCK) && defined(CONFIG_64BIT)
-	/* With multiple 64bit CPUs online, the cr16's are not syncronized. */
-	if (cpu != 0)
-		clear_sched_clock_stable();
-#endif
-
 	mtctl(next_tick, 16);		/* kick off Interval Timer (CR16) */
 
 	per_cpu(cpu_data, cpu).it_value = next_tick;
diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S
index f3ead0b6ce46..5b8fae8d4d12 100644
--- a/arch/parisc/kernel/vmlinux.lds.S
+++ b/arch/parisc/kernel/vmlinux.lds.S
@@ -138,8 +138,6 @@ SECTIONS
 	/* BSS */
 	BSS_SECTION(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE)
 
-	/* bootmap is allocated in setup_bootmem() directly behind bss. */
-
 	. = ALIGN(HUGEPAGE_SIZE);
 	_end = . ;