mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
Merge branch 'parisc-4.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller: - Unbreak parisc bootloader by avoiding a gcc-7 optimization to convert multiple byte-accesses into one word-access. - Add missing HWPOISON page fault handler code. I completely missed that when I added HWPOISON support during this merge window and it only showed up now with the madvise07 LTP test case. - Fix backtrace unwinding to stop when stack start has been reached. - Issue warning if initrd has been loaded into memory regions with broken RAM modules. - Fix HPMC handler (parisc hardware fault handler) to comply with architecture specification. - Avoid compiler warnings about too large frame sizes. - Minor init-section fixes. * 'parisc-4.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Unbreak bootloader due to gcc-7 optimizations parisc: Reintroduce option to gzip-compress the kernel parisc: Add HWPOISON page fault handler code parisc: Move init_per_cpu() into init section parisc: Check if initrd was loaded into broken RAM parisc: Add PDCE_CHECK instruction to HPMC handler parisc: Add wrapper for pdc_instr() firmware function parisc: Move start_parisc() into init section parisc: Stop unwinding at start of stack parisc: Fix too large frame size warnings
This commit is contained in:
commit
cd4175b116
|
@ -257,6 +257,18 @@ config PARISC_PAGE_SIZE_64KB
|
|||
|
||||
endchoice
|
||||
|
||||
config PARISC_SELF_EXTRACT
|
||||
bool "Build kernel as self-extracting executable"
|
||||
default y
|
||||
help
|
||||
Say Y if you want to build the parisc kernel as a kind of
|
||||
self-extracting executable.
|
||||
|
||||
If you say N here, the kernel will be compressed with gzip
|
||||
which can be loaded by the palo bootloader directly too.
|
||||
|
||||
If you don't know what to do here, say Y.
|
||||
|
||||
config SMP
|
||||
bool "Symmetric multi-processing support"
|
||||
---help---
|
||||
|
|
|
@ -129,8 +129,13 @@ Image: vmlinux
|
|||
bzImage: vmlinux
|
||||
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
|
||||
|
||||
ifdef CONFIG_PARISC_SELF_EXTRACT
|
||||
vmlinuz: bzImage
|
||||
$(OBJCOPY) $(boot)/bzImage $@
|
||||
else
|
||||
vmlinuz: vmlinux
|
||||
@gzip -cf -9 $< > $@
|
||||
endif
|
||||
|
||||
install:
|
||||
$(CONFIG_SHELL) $(src)/arch/parisc/install.sh \
|
||||
|
|
|
@ -15,7 +15,7 @@ targets += misc.o piggy.o sizes.h head.o real2.o firmware.o
|
|||
KBUILD_CFLAGS := -D__KERNEL__ -O2 -DBOOTLOADER
|
||||
KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
|
||||
KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks
|
||||
KBUILD_CFLAGS += -fno-PIE -mno-space-regs -mdisable-fpregs
|
||||
KBUILD_CFLAGS += -fno-PIE -mno-space-regs -mdisable-fpregs -Os
|
||||
ifndef CONFIG_64BIT
|
||||
KBUILD_CFLAGS += -mfast-indirect-calls
|
||||
endif
|
||||
|
|
|
@ -24,7 +24,8 @@
|
|||
/* Symbols defined by linker scripts */
|
||||
extern char input_data[];
|
||||
extern int input_len;
|
||||
extern __le32 output_len; /* at unaligned address, little-endian */
|
||||
/* output_len is inserted by the linker possibly at an unaligned address */
|
||||
extern __le32 output_len __aligned(1);
|
||||
extern char _text, _end;
|
||||
extern char _bss, _ebss;
|
||||
extern char _startcode_end;
|
||||
|
|
|
@ -280,6 +280,7 @@ void setup_pdc(void); /* in inventory.c */
|
|||
/* wrapper-functions from pdc.c */
|
||||
|
||||
int pdc_add_valid(unsigned long address);
|
||||
int pdc_instr(unsigned int *instr);
|
||||
int pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_info, unsigned long len);
|
||||
int pdc_chassis_disp(unsigned long disp);
|
||||
int pdc_chassis_warn(unsigned long *warn);
|
||||
|
|
|
@ -1,6 +1,7 @@
|
|||
#ifndef __ASM_SMP_H
|
||||
#define __ASM_SMP_H
|
||||
|
||||
extern int init_per_cpu(int cpuid);
|
||||
|
||||
#if defined(CONFIG_SMP)
|
||||
|
||||
|
|
|
@ -232,6 +232,26 @@ int pdc_add_valid(unsigned long address)
|
|||
}
|
||||
EXPORT_SYMBOL(pdc_add_valid);
|
||||
|
||||
/**
|
||||
* pdc_instr - Get instruction that invokes PDCE_CHECK in HPMC handler.
|
||||
* @instr: Pointer to variable which will get instruction opcode.
|
||||
*
|
||||
* The return value is PDC_OK (0) in case call succeeded.
|
||||
*/
|
||||
int __init pdc_instr(unsigned int *instr)
|
||||
{
|
||||
int retval;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&pdc_lock, flags);
|
||||
retval = mem_pdc_call(PDC_INSTR, 0UL, __pa(pdc_result));
|
||||
convert_to_wide(pdc_result);
|
||||
*instr = pdc_result[0];
|
||||
spin_unlock_irqrestore(&pdc_lock, flags);
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
/**
|
||||
* pdc_chassis_info - Return chassis information.
|
||||
* @result: The return buffer.
|
||||
|
|
|
@ -15,6 +15,7 @@
|
|||
#include <linux/memblock.h>
|
||||
#include <linux/seq_file.h>
|
||||
#include <linux/kthread.h>
|
||||
#include <linux/initrd.h>
|
||||
|
||||
#include <asm/pdc.h>
|
||||
#include <asm/pdcpat.h>
|
||||
|
@ -216,8 +217,16 @@ void __init pdc_pdt_init(void)
|
|||
}
|
||||
|
||||
for (i = 0; i < pdt_status.pdt_entries; i++) {
|
||||
unsigned long addr;
|
||||
|
||||
report_mem_err(pdt_entry[i]);
|
||||
|
||||
addr = pdt_entry[i] & PDT_ADDR_PHYS_MASK;
|
||||
if (IS_ENABLED(CONFIG_BLK_DEV_INITRD) &&
|
||||
addr >= initrd_start && addr < initrd_end)
|
||||
pr_crit("CRITICAL: initrd possibly broken "
|
||||
"due to bad memory!\n");
|
||||
|
||||
/* mark memory page bad */
|
||||
memblock_reserve(pdt_entry[i] & PAGE_MASK, PAGE_SIZE);
|
||||
}
|
||||
|
|
|
@ -317,7 +317,7 @@ void __init collect_boot_cpu_data(void)
|
|||
*
|
||||
* o Enable CPU profiling hooks.
|
||||
*/
|
||||
int init_per_cpu(int cpunum)
|
||||
int __init init_per_cpu(int cpunum)
|
||||
{
|
||||
int ret;
|
||||
struct pdc_coproc_cfg coproc_cfg;
|
||||
|
|
|
@ -38,6 +38,7 @@
|
|||
#include <linux/export.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/sched/clock.h>
|
||||
#include <linux/start_kernel.h>
|
||||
|
||||
#include <asm/processor.h>
|
||||
#include <asm/sections.h>
|
||||
|
@ -48,6 +49,7 @@
|
|||
#include <asm/io.h>
|
||||
#include <asm/setup.h>
|
||||
#include <asm/unwind.h>
|
||||
#include <asm/smp.h>
|
||||
|
||||
static char __initdata command_line[COMMAND_LINE_SIZE];
|
||||
|
||||
|
@ -115,7 +117,6 @@ void __init dma_ops_init(void)
|
|||
}
|
||||
#endif
|
||||
|
||||
extern int init_per_cpu(int cpuid);
|
||||
extern void collect_boot_cpu_data(void);
|
||||
|
||||
void __init setup_arch(char **cmdline_p)
|
||||
|
@ -398,9 +399,8 @@ static int __init parisc_init(void)
|
|||
}
|
||||
arch_initcall(parisc_init);
|
||||
|
||||
void start_parisc(void)
|
||||
void __init start_parisc(void)
|
||||
{
|
||||
extern void start_kernel(void);
|
||||
extern void early_trap_init(void);
|
||||
|
||||
int ret, cpunum;
|
||||
|
|
|
@ -255,12 +255,11 @@ void arch_send_call_function_single_ipi(int cpu)
|
|||
static void __init
|
||||
smp_cpu_init(int cpunum)
|
||||
{
|
||||
extern int init_per_cpu(int); /* arch/parisc/kernel/processor.c */
|
||||
extern void init_IRQ(void); /* arch/parisc/kernel/irq.c */
|
||||
extern void start_cpu_itimer(void); /* arch/parisc/kernel/time.c */
|
||||
|
||||
/* Set modes and Enable floating point coprocessor */
|
||||
(void) init_per_cpu(cpunum);
|
||||
init_per_cpu(cpunum);
|
||||
|
||||
disable_sr_hashing();
|
||||
|
||||
|
|
|
@ -817,7 +817,7 @@ void __init initialize_ivt(const void *iva)
|
|||
u32 check = 0;
|
||||
u32 *ivap;
|
||||
u32 *hpmcp;
|
||||
u32 length;
|
||||
u32 length, instr;
|
||||
|
||||
if (strcmp((const char *)iva, "cows can fly"))
|
||||
panic("IVT invalid");
|
||||
|
@ -827,6 +827,14 @@ void __init initialize_ivt(const void *iva)
|
|||
for (i = 0; i < 8; i++)
|
||||
*ivap++ = 0;
|
||||
|
||||
/*
|
||||
* Use PDC_INSTR firmware function to get instruction that invokes
|
||||
* PDCE_CHECK in HPMC handler. See programming note at page 1-31 of
|
||||
* the PA 1.1 Firmware Architecture document.
|
||||
*/
|
||||
if (pdc_instr(&instr) == PDC_OK)
|
||||
ivap[0] = instr;
|
||||
|
||||
/* Compute Checksum for HPMC handler */
|
||||
length = os_hpmc_size;
|
||||
ivap[7] = length;
|
||||
|
|
|
@ -14,6 +14,7 @@
|
|||
#include <linux/slab.h>
|
||||
#include <linux/kallsyms.h>
|
||||
#include <linux/sort.h>
|
||||
#include <linux/sched.h>
|
||||
|
||||
#include <linux/uaccess.h>
|
||||
#include <asm/assembly.h>
|
||||
|
@ -279,6 +280,17 @@ static void unwind_frame_regs(struct unwind_frame_info *info)
|
|||
|
||||
info->prev_sp = sp - 64;
|
||||
info->prev_ip = 0;
|
||||
|
||||
/* The stack is at the end inside the thread_union
|
||||
* struct. If we reach data, we have reached the
|
||||
* beginning of the stack and should stop unwinding. */
|
||||
if (info->prev_sp >= (unsigned long) task_thread_info(info->t) &&
|
||||
info->prev_sp < ((unsigned long) task_thread_info(info->t)
|
||||
+ THREAD_SZ_ALGN)) {
|
||||
info->prev_sp = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
if (get_user(tmp, (unsigned long *)(info->prev_sp - RP_OFFSET)))
|
||||
break;
|
||||
info->prev_ip = tmp;
|
||||
|
|
|
@ -17,6 +17,7 @@
|
|||
#include <linux/interrupt.h>
|
||||
#include <linux/extable.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/hugetlb.h>
|
||||
|
||||
#include <asm/traps.h>
|
||||
|
||||
|
@ -261,7 +262,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long code,
|
|||
struct task_struct *tsk;
|
||||
struct mm_struct *mm;
|
||||
unsigned long acc_type;
|
||||
int fault;
|
||||
int fault = 0;
|
||||
unsigned int flags;
|
||||
|
||||
if (faulthandler_disabled())
|
||||
|
@ -315,7 +316,8 @@ void do_page_fault(struct pt_regs *regs, unsigned long code,
|
|||
goto out_of_memory;
|
||||
else if (fault & VM_FAULT_SIGSEGV)
|
||||
goto bad_area;
|
||||
else if (fault & VM_FAULT_SIGBUS)
|
||||
else if (fault & (VM_FAULT_SIGBUS|VM_FAULT_HWPOISON|
|
||||
VM_FAULT_HWPOISON_LARGE))
|
||||
goto bad_area;
|
||||
BUG();
|
||||
}
|
||||
|
@ -352,8 +354,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long code,
|
|||
|
||||
if (user_mode(regs)) {
|
||||
struct siginfo si;
|
||||
|
||||
show_signal_msg(regs, code, address, tsk, vma);
|
||||
unsigned int lsb = 0;
|
||||
|
||||
switch (code) {
|
||||
case 15: /* Data TLB miss fault/Data page fault */
|
||||
|
@ -386,6 +387,30 @@ void do_page_fault(struct pt_regs *regs, unsigned long code,
|
|||
si.si_code = (code == 26) ? SEGV_ACCERR : SEGV_MAPERR;
|
||||
break;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_MEMORY_FAILURE
|
||||
if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) {
|
||||
printk(KERN_ERR
|
||||
"MCE: Killing %s:%d due to hardware memory corruption fault at %08lx\n",
|
||||
tsk->comm, tsk->pid, address);
|
||||
si.si_signo = SIGBUS;
|
||||
si.si_code = BUS_MCEERR_AR;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Either small page or large page may be poisoned.
|
||||
* In other words, VM_FAULT_HWPOISON_LARGE and
|
||||
* VM_FAULT_HWPOISON are mutually exclusive.
|
||||
*/
|
||||
if (fault & VM_FAULT_HWPOISON_LARGE)
|
||||
lsb = hstate_index_to_shift(VM_FAULT_GET_HINDEX(fault));
|
||||
else if (fault & VM_FAULT_HWPOISON)
|
||||
lsb = PAGE_SHIFT;
|
||||
else
|
||||
show_signal_msg(regs, code, address, tsk, vma);
|
||||
si.si_addr_lsb = lsb;
|
||||
|
||||
si.si_errno = 0;
|
||||
si.si_addr = (void __user *) address;
|
||||
force_sig_info(si.si_signo, &si, current);
|
||||
|
|
|
@ -219,7 +219,8 @@ config FRAME_WARN
|
|||
range 0 8192
|
||||
default 0 if KASAN
|
||||
default 2048 if GCC_PLUGIN_LATENT_ENTROPY
|
||||
default 1024 if !64BIT
|
||||
default 1280 if (!64BIT && PARISC)
|
||||
default 1024 if (!64BIT && !PARISC)
|
||||
default 2048 if 64BIT
|
||||
help
|
||||
Tell gcc to warn at build time for stack frames larger than this.
|
||||
|
|
Loading…
Reference in a new issue