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authorLinus Torvalds <torvalds@linux-foundation.org>2016-10-07 20:50:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-07 20:50:37 -0700
commit997b611baf7591ea5119539ee821a3e2f4fcf24e (patch)
tree9f2c78a343ddb90810f5dabc8e6cf07ee118eb19 /arch/parisc/kernel
parent2c34ff14bf1d03a705f5400888ecac5b6400e981 (diff)
parent690d097c00c88fa9d93d198591e184164b1d8c20 (diff)
downloadlinux-997b611baf7591ea5119539ee821a3e2f4fcf24e.tar.bz2
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
Diffstat (limited to 'arch/parisc/kernel')
-rw-r--r--arch/parisc/kernel/entry.S46
-rw-r--r--arch/parisc/kernel/hpmc.S16
-rw-r--r--arch/parisc/kernel/inventory.c2
-rw-r--r--arch/parisc/kernel/pacache.S84
-rw-r--r--arch/parisc/kernel/real2.S24
-rw-r--r--arch/parisc/kernel/setup.c8
-rw-r--r--arch/parisc/kernel/smp.c4
-rw-r--r--arch/parisc/kernel/time.c6
-rw-r--r--arch/parisc/kernel/vmlinux.lds.S2
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 = . ;