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5f50867b4f
android_kernel_xiaomi_sm8350/arch/powerpc/kernel
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Haren Myneni 5f50867b4f [POWERPC] kdump: Reserve the existing TCE mappings left by the first kernel 
During kdump boot, noticed some machines checkstop on dma protection
fault for ongoing DMA left in the first kernel. Instead of initializing
TCE entries in iommu_init() for the kdump boot, this patch fixes this
issue by walking through the each TCE table and checks whether the
entries are in use by the first kernel. If so, reserve those entries by
setting the corresponding bit in tbl->it_map such that these entries
will not be available for the kdump boot.

However it could be possible that all TCE entries might be used up due
to the driver bug that does continuous mapping. My observation is around
1700 TCE  entries are used on some systems (Ex: P4) at some point of
time during kdump boot and saving dump (either write into the disk or
sending to remote machine). Hence, this patch will make sure that
minimum of 2048 entries will be available such that kdump boot could be
successful in some cases.

Signed-off-by: Haren Myneni <haren@us.ibm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28 11:59:46 +10:00
..
vdso32 [PATCH] Mark unwind info for signal trampolines in vDSOs 2006-03-31 12:18:52 -08:00
vdso64 [PATCH] Mark unwind info for signal trampolines in vDSOs 2006-03-31 12:18:52 -08:00
align.c [PATCH] powerpc: Implement support for setting little-endian mode via prctl 2006-06-09 21:24:15 +10:00
asm-offsets.c powerpc: Use 64k pages without needing cache-inhibited large pages 2006-06-15 10:45:18 +10:00
binfmt_elf32.c
btext.c
cpu_setup_6xx.S [POWERPC] Guard L3CR references with CPU_FTR_L3CR. 2006-06-21 15:01:27 +10:00
cpu_setup_power4.S [POWERPC] Don't access HID registers if running on a Hypervisor. 2006-06-28 11:51:12 +10:00
cputable.c [POWERPC] Add 8641 CPU table entry. 2006-06-21 15:01:28 +10:00
crash_dump.c [PATCH] powerpc: Kdump header cleanup 2006-05-19 15:02:16 +10:00
crash.c fix paniced->panicked typos 2006-06-26 18:30:00 +02:00
dma_64.c
entry_32.S powerpc: Use correct sequence for putting CPU into nap mode 2006-04-18 21:49:11 +10:00
entry_64.S [POWERPC] system call micro optimisation 2006-06-15 19:31:26 +10:00
firmware.c [PATCH] powerpc: Rename and export ppc64_firmware_features 2006-03-28 16:45:20 +11:00
fpu.S [POWERPC] 64bit FPSCR support 2006-06-15 19:31:25 +10:00
head_4xx.S
head_8xx.S [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
head_32.S [POWERPC] Add starting of secondary 86xx CPUs. 2006-06-21 15:01:28 +10:00
head_44x.S [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
head_64.S [POWERPC] cell: add RAS support 2006-06-21 15:01:29 +10:00
head_booke.h [PATCH] powerpc: Fix Kernel FP unavail exception for BookE 2006-02-10 16:51:50 +11:00
head_fsl_booke.S [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
ibmebus.c
idle_6xx.S powerpc: Use correct sequence for putting CPU into nap mode 2006-04-18 21:49:11 +10:00
idle_power4.S powerpc: Use correct sequence for putting CPU into nap mode 2006-04-18 21:49:11 +10:00
idle.c [PATCH] powerpc: Ensure runlatch is off in the idle loop 2006-04-13 09:27:22 -07:00
init_task.c
iomap.c [PATCH] powerpc: remove io_page_mask 2006-04-22 18:45:05 +10:00
iommu.c [POWERPC] kdump: Reserve the existing TCE mappings left by the first kernel 2006-06-28 11:59:46 +10:00
irq.c [PATCH] x86/powerpc make hardirq_ctx and softirq_ctx __read_mostly 2006-06-23 07:43:05 -07:00
kprobes.c [PATCH] powerpc/kprobes: fix singlestep out-of-line 2006-05-03 23:06:41 +10:00
l2cr_6xx.S powerpc: Move l2cr.S over to arch/powerpc 2006-03-27 15:22:28 +11:00
legacy_serial.c [PATCH] powerpc: legacy_serial loop cleanup 2006-03-27 14:48:54 +11:00
lparcfg.c [PATCH] powerpc: udbg_printf() formatting attribute 2006-05-19 15:02:19 +10:00
lparmap.c
machine_kexec_32.c Storage class should be first 2006-06-26 18:57:34 +02:00
machine_kexec_64.c [PATCH] powerpc: Move crashkernel= handling into the kernel. 2006-05-19 15:02:18 +10:00
machine_kexec.c [PATCH] powerpc: remove remaining crash_notes variable from machine_kexec.c 2006-01-11 14:48:02 +11:00
Makefile powerpc: Use correct sequence for putting CPU into nap mode 2006-04-18 21:49:11 +10:00
misc_32.S [PATCH] powerpc: remove do-nothing cpu setup routines 2006-05-19 14:24:18 +10:00
misc_64.S [PATCH] powerpc: remove do-nothing cpu setup routines 2006-05-19 14:24:18 +10:00
module_32.c powerpc: Move module.c over to arch/powerpc 2006-03-27 19:28:58 +11:00
module_64.c [PATCH] powerpc64: Fix loading of modules without a .toc section 2006-04-28 21:04:49 +10:00
nvram_64.c [PATCH] nvram_print_partitions cosmetic fixup 2006-04-29 18:08:05 +10:00
of_device.c [PATCH] powerpc: tidy-up of_register_driver()/driver_register() return values 2006-03-23 14:40:54 +11:00
paca.c [PATCH] powerpc: Allow non zero boot cpuids 2006-03-27 14:48:48 +11:00
pci_32.c [PATCH] mm: remove VM_LOCKED before remap_pfn_range and drop VM_SHM 2006-06-25 10:00:55 -07:00
pci_64.c [PATCH] mm: remove VM_LOCKED before remap_pfn_range and drop VM_SHM 2006-06-25 10:00:55 -07:00
pci_direct_iommu.c [POWERPC] cleanup dma_mapping_ops 2006-06-15 19:31:26 +10:00
pci_dn.c [PATCH] powerpc: clean up iSeries PCI probe 2006-05-24 16:08:57 +10:00
pci_iommu.c [POWERPC] cleanup dma_mapping_ops 2006-06-15 19:31:26 +10:00
perfmon_fsl_booke.c powerpc: Move perfmon_fsl_booke.c over to arch/powerpc 2006-03-27 20:09:04 +11:00
pmc.c
ppc32.h
ppc_ksyms.c powerpc/ppc: export strncasecmp 2006-04-02 16:01:58 -05:00
proc_ppc64.c [PATCH] mm: remove VM_LOCKED before remap_pfn_range and drop VM_SHM 2006-06-25 10:00:55 -07:00
process.c [PATCH] powerpc: Implement PR_[GS]ET_UNALIGN prctls for powerpc 2006-06-09 21:24:16 +10:00
prom_init.c [POWERPC] Fix builtin command line interaction with firmware 2006-06-15 19:31:26 +10:00
prom_parse.c [PATCH] powerpc: fix of_parse_dma_window 2006-06-09 21:21:02 +10:00
prom.c [POWERPC] cell: add RAS support 2006-06-21 15:01:29 +10:00
ptrace32.c [PATCH] use ptrace_get_task_struct in various places 2006-01-08 20:13:51 -08:00
ptrace-common.h [PATCH] powerpc: trivial: modify comments to refer to new location of files 2006-02-10 16:53:51 +11:00
ptrace.c [PATCH] powerpc: enable PPC_PTRACE_[GS]ETREGS on ppc32 2006-06-09 21:20:51 +10:00
rtas_flash.c [PATCH] powerpc: reorg RTAS delay code 2006-06-09 21:21:06 +10:00
rtas_pci.c [POWERPC] Add support for PCI-Express nodes in the device tree 2006-06-15 19:31:25 +10:00
rtas-proc.c [PATCH] powerpc: Avoid __initcall warnings 2006-04-13 09:27:26 -07:00
rtas-rtc.c [PATCH] powerpc: reorg RTAS delay code 2006-06-09 21:21:06 +10:00
rtas.c [POWERPC] RTAS delay, fix module build breaks 2006-06-21 15:01:27 +10:00
semaphore.c
setup_32.c [PATCH] powerpc: Parse early parameters earlier 2006-05-19 15:02:13 +10:00
setup_64.c [PATCH] powerpc: Kdump header cleanup 2006-05-19 15:02:16 +10:00
setup-common.c [PATCH] powerpc: Make early xmon logic immune to location of early parsing 2006-05-19 15:02:12 +10:00
setup.h [PATCH] powerpc: Make early xmon logic immune to location of early parsing 2006-05-19 15:02:12 +10:00
signal_32.c Merge branch 'merge' 2006-06-12 17:53:34 +10:00
signal_64.c Merge branch 'merge' 2006-06-12 17:53:34 +10:00
smp-tbsync.c
smp.c [POWERPC] Add starting of secondary 86xx CPUs. 2006-06-21 15:01:28 +10:00
swsusp_32.S powerpc: Move swsusp.S over to arch/powerpc 2006-03-27 19:21:46 +11:00
sys_ppc32.c [PATCH] consolidate sys32/compat_adjtimex 2006-03-26 08:56:57 -08:00
syscalls.c [PATCH] powerpc: declare arch syscalls in <asm/syscalls.h> 2006-03-27 14:48:22 +11:00
sysfs.c [PATCH] powerpc: Allow devices to register with numa topology 2006-05-01 18:17:46 -07:00
systbl.S [POWERPC] Unify ppc syscall tables 2006-06-21 15:01:32 +10:00
tau_6xx.c powerpc: Move cpu_setup_6xx.S and temp.c over to arch/powerpc 2006-03-27 19:15:26 +11:00
time.c [PATCH] fix and optimize clock source update 2006-06-26 09:58:21 -07:00
traps.c [PATCH] Rewritten backlight infrastructure for portable Apple computers 2006-06-25 10:00:59 -07:00
udbg_16550.c [PATCH] powerpc: fix compile warning in udbg_init_maple_realmode 2006-02-07 21:51:52 +11:00
udbg.c [PATCH] powerpc: Add udbg-immortal kernel option 2006-06-09 21:24:10 +10:00
vdso.c [PATCH] powerpc vdso updates 2006-06-09 21:20:57 +10:00
vecemu.c
vector.S [POWERPC] 64bit FPSCR support 2006-06-15 19:31:25 +10:00
vio.c [POWERPC] node local IOMMU tables 2006-06-15 19:31:26 +10:00
vmlinux.lds.S [PATCH] powerpc: make iSeries flattened device tree dynamic 2006-05-24 16:08:57 +10:00