iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/arch/parisc/kernel
History
John David Anglin 1138b6718f parisc: Fix address in HPMC IVA 
Helge noticed that the address of the os_hpmc handler was not being
correctly calculated in the hpmc macro.  As a result, PDCE_CHECK would
fail to call os_hpmc:

<Cpu2> e800009802e00000  0000000000000000  CC_ERR_CHECK_HPMC
<Cpu2> 37000f7302e00000  8040004000000000  CC_ERR_CPU_CHECK_SUMMARY
<Cpu2> f600105e02e00000  fffffff0f0c00000  CC_MC_HPMC_MONARCH_SELECTED
<Cpu2> 140003b202e00000  000000000000000b  CC_ERR_HPMC_STATE_ENTRY
<Cpu2> 5600100b02e00000  00000000000001a0  CC_MC_OS_HPMC_LEN_ERR
<Cpu2> 5600106402e00000  fffffff0f0438e70  CC_MC_BR_TO_OS_HPMC_FAILED
<Cpu2> e800009802e00000  0000000000000000  CC_ERR_CHECK_HPMC
<Cpu2> 37000f7302e00000  8040004000000000  CC_ERR_CPU_CHECK_SUMMARY
<Cpu2> 4000109f02e00000  0000000000000000  CC_MC_HPMC_INITIATED
<Cpu2> 4000101902e00000  0000000000000000  CC_MC_MULTIPLE_HPMCS
<Cpu2> 030010d502e00000  0000000000000000  CC_CPU_STOP

The address problem can be seen by dumping the fault vector:

0000000040159000 <fault_vector_20>:
    40159000:   63 6f 77 73     stb r15,-2447(dp)
    40159004:   20 63 61 6e     ldil L%b747000,r3
    40159008:   20 66 6c 79     ldil L%-1c3b3000,r3
        ...
    40159020:   08 00 02 40     nop
    40159024:   20 6e 60 02     ldil L%15d000,r3
    40159028:   34 63 00 00     ldo 0(r3),r3
    4015902c:   e8 60 c0 02     bv,n r0(r3)
    40159030:   08 00 02 40     nop
    40159034:   00 00 00 00     break 0,0
    40159038:   c0 00 70 00     bb,*< r0,sar,40159840 <fault_vector_20+0x840>
    4015903c:   00 00 00 00     break 0,0

Location 40159038 should contain the physical address of os_hpmc:

000000004015d000 <os_hpmc>:
    4015d000:   08 1a 02 43     copy r26,r3
    4015d004:   01 c0 08 a4     mfctl iva,r4
    4015d008:   48 85 00 68     ldw 34(r4),r5

This patch moves the address setup into initialize_ivt to resolve the
above problem.  I tested the change by dumping the HPMC entry after setup:

0000000040209020:  8000240
0000000040209024: 206a2004
0000000040209028: 34630ac0
000000004020902c: e860c002
0000000040209030:  8000240
0000000040209034: 1bdddce6
0000000040209038:   15d000
000000004020903c:      1a0

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Helge Deller <deller@gmx.de>
2018-10-17 08:18:01 +02:00
..
.gitignore
parisc: add arch/parisc/kernel/.gitignore
2008-10-10 16:32:28 +00:00
asm-offsets.c
parisc: Drop per_cpu uaccess related exception_data struct
2017-05-10 17:46:13 +02:00
audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cache.c
parisc: Reorder TLB flush timing calculation
2018-10-17 08:18:00 +02:00
compat_audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
drivers.c
parisc: Convert printk(KERN_LEVEL) to pr_lvl()
2018-06-28 17:14:44 +02:00
entry.S
parisc: Fix address in HPMC IVA
2018-10-17 08:18:01 +02:00
firmware.c
parisc: Add wrapper for pdc_instr() firmware function
2017-09-22 19:46:44 +02:00
ftrace.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hardware.c
parisc: Move various functions and strings to init section
2018-03-27 18:52:21 +02:00
head.S
parisc: Check if secondary CPUs want own PDC calls
2018-03-02 10:04:46 +01:00
hpmc.S
parisc: Fix exported address of os_hpmc handler
2018-10-17 08:18:01 +02:00
inventory.c
parisc: Add Page Deallocation Table (PDT) support
2017-05-12 09:14:15 +02:00
irq.c
parisc: Increase thread and stack size to 32kb
2017-07-31 08:41:26 +02:00
Makefile
parisc: Fix missing binfmt_elf32.o build error
2018-04-14 11:17:59 +02:00
module.c
parisc64: Add .opd based function descriptor dereference
2018-01-09 10:45:38 +01:00
pa7300lc.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pacache.S
parisc: Fix and improve kernel stack unwinding
2018-08-13 09:54:17 +02:00
parisc_ksyms.c
parisc: Export __cmpxchg_u64 unconditionally
2017-10-19 08:48:45 +02:00
pci-dma.c
parisc: use generic dma_noncoherent_ops
2018-08-13 09:30:32 +02:00
pci.c
parisc: Fix section mismatches
2018-05-02 21:47:35 +02:00
pdc_chassis.c
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
pdc_cons.c
treewide: Switch DEFINE_TIMER callbacks to struct timer_list *
2017-11-21 15:57:05 -08:00
pdt.c
mm/memory_failure: Remove unused trapno from memory_failure
2018-01-23 12:17:42 -06:00
perf_asm.S
Revert "parisc: fix trivial section name warnings"
2008-06-13 10:49:45 -04:00
perf_images.h
…
perf.c
parisc: Static initialization of spinlocks in perf and unwind code
2017-08-22 16:34:33 +02:00
process.c
parisc: Fix and improve kernel stack unwinding
2018-08-13 09:54:17 +02:00
processor.c
parisc: Add hardware description to stack traces
2018-08-21 14:46:26 +02:00
ptrace.c
parisc: Add HAVE_REGS_AND_STACK_ACCESS_API feature
2018-08-13 09:30:50 +02:00
real2.S
parisc: Fix and improve kernel stack unwinding
2018-08-13 09:54:17 +02:00
setup.c
parisc: use generic dma_noncoherent_ops
2018-08-13 09:30:32 +02:00
signal32.c
signal: Unify and correct copy_siginfo_to_user32
2018-01-15 19:56:20 -06:00
signal32.h
signal: Unify and correct copy_siginfo_to_user32
2018-01-15 19:56:20 -06:00
signal.c
Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2017-11-17 11:54:55 -08:00
smp.c
parisc: Move setup_profiling_timer() out of init section
2018-05-18 16:21:49 +02:00
stacktrace.c
parisc: Consolidate unwind initialization calls
2018-08-17 17:00:08 +02:00
sys_parisc32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sys_parisc.c
parisc: Restore possibility to execute 64-bit applications
2018-08-17 16:45:24 +02:00
syscall_table.S
parisc: Wire up io_pgetevents syscall
2018-06-28 17:43:00 +02:00
syscall.S
parisc: Release spinlocks using ordered store
2018-10-17 08:18:01 +02:00
time.c
parisc: time: Convert read_persistent_clock() to read_persistent_clock64()
2018-04-20 20:18:21 +02:00
topology.c
parisc: Add CPU topology support
2017-11-17 15:27:22 +01:00
traps.c
parisc: Fix address in HPMC IVA
2018-10-17 08:18:01 +02:00
unaligned.c
signal/parisc: Use force_sig_fault where appropriate
2018-04-25 10:44:06 -05:00
unwind.c
parisc: Fix boot failure of 64-bit kernel
2018-08-21 14:32:44 +02:00
vmlinux.lds.S
parisc64: Add .opd based function descriptor dereference
2018-01-09 10:45:38 +01:00