AuxXxilium/linux_dsm_epyc7002
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7ab073b6e0
linux_dsm_epyc7002/arch/x86/kernel
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Yinghai Lu 7ab073b6e0 x86: max_low_pfn_mapped fix, #1 
fix crash on Ingo's big box:

calling  pci_iommu_init+0x0/0x17
PCI-DMA: Disabling AGP.
PCI-DMA: aperture base @ d0000000 size 65536 KB
PCI-DMA: using GART IOMMU.
PCI-DMA: Reserving 64MB of IOMMU area in the AGP aperture
BUG: unable to handle kernel paging request at ffff88000003be88
IP: [<ffffffff8026d377>] __alloc_pages_internal+0xc3/0x3f2
PGD 202063 PUD 206063 PMD 22fc00163 PTE 3b162
Oops: 0000 [1] SMP

and e820 is:

 BIOS-e820: 0000000000000000 - 000000000009ac00 (usable)
 BIOS-e820: 000000000009ac00 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000ca000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000007ff70000 (usable)
 BIOS-e820: 000000007ff70000 - 000000007ff86000 (ACPI data)
 BIOS-e820: 000000007ff86000 - 0000000080000000 (ACPI NVS)
 BIOS-e820: 0000000080000000 - 00000000cfe00000 (usable)
 BIOS-e820: 00000000cfe00000 - 00000000d0000000 (reserved)
 BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
 BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
 BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
 BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
 BIOS-e820: 0000000100000000 - 0000000830000000 (usable)

system has 32 GB RAM installed.

max_low_pfn_mapped is 0xcfe00, and GART aperture is not mapped.

So try to use init_memory_mapping to map that area, because the iommu
thinks that area is ram ...

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-13 08:19:15 +02:00
..
acpi x86: remove conflicting nx6325 and nx6125 quirks 2008-07-12 06:44:58 +02:00
cpu x86_64: add pseudo-features for 32-bit compat syscall 2008-07-11 15:44:57 +02:00
.gitignore arch/x86/kernel/.gitignore: Added vmlinux.lds to .gitignore file because it shouldn't be tracked. 2008-07-10 10:13:51 -07:00
alternative.c x86: harden kernel code patching 2008-04-25 19:54:07 +02:00
amd_iommu_init.c x86, AMD IOMMU: remove unnecessary code from the iommu_enable function 2008-07-04 11:44:44 +02:00
amd_iommu.c x86, AMD IOMMU: flush domain TLB when there is more than one page to flush 2008-07-04 11:44:40 +02:00
aperture_64.c x86: remove end_pfn in 64bit 2008-07-08 13:10:38 +02:00
apic_32.c x86, VisWS: turn into generic arch, make VisWS boot on a regular PC 2008-07-10 18:55:32 +02:00
apic_64.c x86: nmi_watchdog - use NMI_NONE by default 2008-07-08 12:51:41 +02:00
apm_32.c x86: Switch apm to unlocked_kernel 2008-05-25 12:03:27 +02:00
asm-offsets_32.c x86/paravirt: split sysret and sysexit 2008-07-08 13:13:15 +02:00
asm-offsets_64.c x86: rename threadinfo to TI. 2008-07-09 09:14:02 +02:00
asm-offsets.c
audit_64.c
bootflag.c x86: coding style cleanup for kernel/bootflag.c 2008-01-30 13:32:31 +01:00
cpuid.c PM: Remove destroy_suspended_device() 2008-04-19 19:10:28 -07:00
crash_dump_32.c kmap leak fix for x86_32 kdump 2007-10-19 11:53:33 -07:00
crash_dump_64.c
crash.c x86: allow machine_crash_shutdown to be replaced 2008-04-27 12:00:29 +03:00
doublefault_32.c x86: unify tss_struct 2008-01-30 13:31:31 +01:00
ds.c x86: debug Store - call kfree if only we really need it 2008-04-17 17:41:34 +02:00
e820.c Merge branch 'x86/generalize-visws' into x86/core 2008-07-11 21:22:18 +02:00
early_printk.c x86: coding style fixes to x86/kernel/early_printk.c 2008-04-17 17:40:51 +02:00
early-quirks.c x86: remove end_pfn in 64bit 2008-07-08 13:10:38 +02:00
efi_32.c x86: fix Intel Mac booting with EFI 2008-07-03 08:19:18 +02:00
efi_64.c x86: add flags parameter to reserve_bootmem_generic() 2008-07-08 11:49:49 +02:00
efi_stub_32.S
efi_stub_64.S x86: EFI runtime service support 2008-01-30 13:31:19 +01:00
efi.c x86: introduce max_low_pfn_mapped for 64-bit 2008-07-11 10:24:04 +02:00
entry_32.S x86: use matching CFI_ENDPROC 2008-07-11 20:49:28 +02:00
entry_64.S x86_64: fix delayed signals 2008-07-12 07:11:10 +02:00
genapic_64.c x86: introduce max_physical_apicid for bigsmp switching 2008-06-10 11:32:09 +02:00
genapic_flat_64.c x86: use cpumask_of_cpu() 2008-04-17 17:41:36 +02:00
genx2apic_uv_x.c x86: map UV chipset space - UV support 2008-07-09 07:43:23 +02:00
geode_32.c x86, geode: add a VSA2 ID for General Software 2008-06-19 14:19:03 +02:00
head32.c x86: extract common part of head32.c and head64.c into head.c 2008-06-05 15:10:02 +02:00
head64.c x86: move reserve_setup_data to setup.c 2008-07-08 13:16:14 +02:00
head_32.S x86: boot secondary cpus through initial_code 2008-07-08 12:48:18 +02:00
head_64.S x86: always set _PAGE_GLOBAL in _PAGE_KERNEL* flags 2008-07-08 13:16:28 +02:00
head.c x86: move reserve_setup_data to setup.c 2008-07-08 13:16:14 +02:00
hpet.c x86: clean up computation of HPET .mult variables 2008-05-12 21:27:54 +02:00
i386_ksyms_32.c Generic semaphore implementation 2008-04-17 10:42:34 -04:00
i387.c x86 ptrace: fix PTRACE_GETFPXREGS error 2008-07-01 11:03:31 +02:00
i8237.c Driver core: change sysdev classes to use dynamic kobject names 2008-01-24 20:40:40 -08:00
i8253.c x86: cleanup div_sc() usage 2008-04-26 17:35:47 +02:00
i8259.c i8259: fix final ugliness 2008-06-02 11:55:52 +02:00
init_task.c [PATCH] take init_files to fs/file.c 2008-05-16 17:22:20 -04:00
io_apic_32.c x86: I/O APIC: Never configure IRQ2 2008-07-11 20:54:03 +02:00
io_apic_64.c x86: I/O APIC: Never configure IRQ2 2008-07-11 20:54:03 +02:00
io_delay.c x86: add dmi quirk for io_delay 2008-03-26 22:23:40 +01:00
ioport.c x86: refactor ioport unification 2008-01-30 13:33:10 +01:00
ipi.c x86: ipi.c: removed duplicated include 2008-05-25 08:58:32 +02:00
irq_32.c Merge branch 'x86/irq' into x86/devel 2008-07-08 09:53:57 +02:00
irq_64.c x86: make /proc/stat account for all interrupts 2008-05-25 07:11:49 +02:00
irqinit_32.c x86: rename the i8259_32/64.c leftovers to irqinit_32/64.c 2008-05-24 16:47:39 +02:00
irqinit_64.c x86: rename the i8259_32/64.c leftovers to irqinit_32/64.c 2008-05-24 16:47:39 +02:00
k8.c
kdebugfs.c x86, boot: export linked list of struct setup_data via debugfs 2008-04-26 21:34:42 +02:00
kgdb.c x86: KGDB build fix 2008-04-19 19:19:54 +02:00
kprobes.c x86: replace most VM86 flags with flags from processor-flags.h 2008-04-17 17:41:33 +02:00
kvm.c x86: KVM guest: hypercall batching 2008-04-27 12:00:28 +03:00
kvmclock.c x86: KVM guest: Use the paravirt clocksource structs and functions 2008-06-24 21:02:33 +03:00
ldt.c x86: avoid re-loading LDT in unrelated address spaces 2008-05-22 19:11:20 +02:00
machine_kexec_32.c x86: arch/x86/kernel/machine_kexec_32.c: remove extra semicolons 2008-06-24 18:37:49 +02:00
machine_kexec_64.c x86: remove end_pfn in 64bit 2008-07-08 13:10:38 +02:00
Makefile Merge branch 'x86/generalize-visws' into x86/core 2008-07-11 21:22:18 +02:00
mca_32.c x86: coding style fixes to arch/x86/kernel/mca_32.c 2008-04-17 17:40:49 +02:00
mfgpt_32.c geode: fix modular build 2008-06-12 21:25:51 +02:00
microcode.c x86: microcode: cosmetic changes 2008-07-03 11:37:20 +02:00
mmconf-fam10h_64.c x86: move mmconfig declarations to header 2008-05-30 15:45:17 -07:00
module_32.c
module_64.c
mpparse.c x86: add early quirk support 2008-07-10 18:55:31 +02:00
msr.c PM: Remove destroy_suspended_device() 2008-04-19 19:10:28 -07:00
nmi.c x86: Recover timer_ack lost in the merge of the NMI watchdog 2008-07-11 20:54:03 +02:00
numaq_32.c x86: make generic arch support NUMAQ 2008-06-10 11:34:42 +02:00
olpc.c x86: olpc: add One Laptop Per Child architecture support 2008-04-29 08:06:07 -07:00
paravirt_patch_32.c x86/paravirt: split sysret and sysexit 2008-07-08 13:13:15 +02:00
paravirt_patch_64.c x86/paravirt: add sysret/sysexit pvops for returning to 32-bit compatibility userspace 2008-07-08 13:15:52 +02:00
paravirt.c x86: rename paravirtualized TSC functions 2008-07-09 07:43:28 +02:00
pci-calgary_64.c x86: remove end_pfn in 64bit 2008-07-08 13:10:38 +02:00
pci-dma.c x86: remove end_pfn in 64bit 2008-07-08 13:10:38 +02:00
pci-gart_64.c x86: max_low_pfn_mapped fix, #1 2008-07-13 08:19:15 +02:00
pci-nommu.c x86: unify pci-nommu 2008-04-19 19:19:57 +02:00
pci-swiotlb_64.c x86: remove end_pfn in 64bit 2008-07-08 13:10:38 +02:00
pcspeaker.c
pmtimer_64.c x86: move pmtmr related declarations 2008-01-30 13:30:18 +01:00
probe_roms_32.c x86: seperate probe_roms into another file 2008-07-08 12:50:05 +02:00
process_32.c x86: move cpu_exit_clear to process_32.c 2008-07-08 12:48:24 +02:00
process_64.c x86: save %fs and %gs before load_TLS() and arch_leave_lazy_cpu_mode() 2008-07-08 13:11:11 +02:00
process.c x86: add C1E aware idle function, fix 2008-07-08 07:47:37 +02:00
ptrace.c x86 ptrace: fix PTRACE_GETFPXREGS error 2008-07-01 11:03:31 +02:00
pvclock.c x86: Add structs and functions for paravirt clocksource 2008-06-24 21:02:31 +03:00
quirks.c x86: add another PCI ID for ICH6 force hpet. 2008-06-05 15:11:35 +02:00
reboot_fixups_32.c x86: constify data in reboot.c 2008-05-25 08:58:30 +02:00
reboot.c x86: constify data in reboot.c 2008-05-25 08:58:30 +02:00
relocate_kernel_32.S x86: relocate_kernel - use predefined macroses for page attributes 2008-04-17 17:41:29 +02:00
relocate_kernel_64.S x86: relocate_kernel - use predefined macroses for page attributes 2008-04-17 17:41:29 +02:00
rtc.c provide rtc_cmos platform device 2008-06-12 18:05:42 -07:00
scx200_32.c x86: fix sparse warning in kernel/scx200_32.c 2008-01-31 22:05:45 +01:00
setup_percpu.c x86: move prefill_possible_map calling early 2008-07-08 13:16:24 +02:00
setup.c Merge branch 'x86/generalize-visws' into x86/core 2008-07-11 21:22:18 +02:00
sigframe.h x86: move struct definitions to unifed sigframe.h 2008-04-17 17:40:46 +02:00
signal_32.c signals: x86 TS_RESTORE_SIGMASK 2008-04-30 08:29:37 -07:00
signal_64.c signals: x86 TS_RESTORE_SIGMASK 2008-04-30 08:29:37 -07:00
smp.c x86: fix app crashes after SMP resume 2008-05-13 19:36:12 +02:00
smpboot.c arch/x86/kernel/smpboot.c: fix warning 2008-07-09 08:18:39 +02:00
smpcommon_32.c x86: create smpcommon.c 2008-04-17 17:40:55 +02:00
smpcommon.c x86: create smpcommon.c 2008-04-17 17:40:55 +02:00
stacktrace.c x86: don't save unreliable stack trace entries 2008-02-26 12:55:58 +01:00
step.c x86: prevent unconditional writes to DebugCtl MSR 2008-04-17 17:40:58 +02:00
summit_32.c x86: make generic arch support NUMAQ 2008-06-10 11:34:42 +02:00
sys_i386_32.c x86: coding style fixes to arch/x86/kernel/sys_i386_32.c 2008-06-10 12:34:54 +02:00
sys_x86_64.c unified (weak) sys_pipe implementation 2008-05-03 13:50:33 -07:00
syscall_64.c x86: coding style fixes to arch/x86/kernel/syscall_64.c 2008-04-17 17:40:48 +02:00
syscall_table_32.S timerfd: wire the new timerfd API to the x86 family 2008-02-05 09:44:07 -08:00
tce_64.c
test_nx.c x86: Explicitly include required header files. 2008-04-17 17:41:15 +02:00
test_rodata.c x86: include proper prototypes for rodata_test 2008-02-14 23:30:20 +01:00
time_32.c x86: merge sched_clock handling 2008-07-09 07:43:25 +02:00
time_64.c x86: merge tsc_init and clocksource code 2008-07-09 07:43:27 +02:00
tlb_32.c x86: create tlb files 2008-04-17 17:40:56 +02:00
tlb_64.c SGI UV: TLB shootdown using broadcast assist unit, cleanups 2008-07-08 12:23:24 +02:00
tlb_uv.c x86, SGI UV: uv_ptc_proc_write fix 2008-07-08 12:23:31 +02:00
tls.c asmlinkage_protect replaces prevent_tail_call 2008-04-10 17:28:26 -07:00
tls.h x86: x86 user_regset TLS 2008-01-30 13:31:52 +01:00
topology.c x86: fix section mismatch warning in topology.c:arch_register_cpu 2008-02-19 16:18:30 +01:00
trampoline_32.S x86: trampoline_32.S - switch to .cpuinit.data 2008-04-26 17:35:47 +02:00
trampoline_64.S x86: move suspend wakeup code to C 2008-04-17 17:41:37 +02:00
trampoline.c x86: extend e820 ealy_res support 32bit 2008-05-25 10:55:11 +02:00
traps_32.c x86: traps_xx: various small changes 2008-07-09 08:18:31 +02:00
traps_64.c x86: traps_xx: various small changes 2008-07-09 08:18:31 +02:00
tsc_sync.c x86: add warning to check_tsc_warp() 2008-01-30 13:33:24 +01:00
tsc.c x86: remove duplicate call to use_tsc_delay 2008-07-10 19:47:55 +02:00
verify_cpu_64.S
visws_quirks.c x86, VisWS: build fix 2008-07-10 19:45:01 +02:00
vm86_32.c x86: replace most VM86 flags with flags from processor-flags.h 2008-04-17 17:41:33 +02:00
vmi_32.c x86: rename paravirtualized TSC functions 2008-07-09 07:43:28 +02:00
vmiclock_32.c x86: rename paravirtualized TSC functions 2008-07-09 07:43:28 +02:00
vmlinux_32.lds.S x86: move tracedata to RODATA 2008-05-25 07:09:47 +02:00
vmlinux_64.lds.S Merge branches 'x86/numa-fixes', 'x86/apic', 'x86/apm', 'x86/bitops', 'x86/build', 'x86/cleanups', 'x86/cpa', 'x86/cpu', 'x86/defconfig', 'x86/gart', 'x86/i8259', 'x86/intel', 'x86/irqstats', 'x86/kconfig', 'x86/ldt', 'x86/mce', 'x86/memtest', 'x86/pat', 'x86/ptemask', 'x86/resumetrace', 'x86/threadinfo', 'x86/timers', 'x86/vdso' and 'x86/xen' into x86/devel 2008-07-08 09:16:56 +02:00
vmlinux.lds.S
vsmp_64.c x86: vsmp_64 add missing includes 2008-05-25 08:58:24 +02:00
vsyscall_64.c x86, 64-bit: use write_gdt_entry in vsyscall_set_cpu 2008-07-08 13:10:26 +02:00
x8664_ksyms_64.c x86: move x86_64 gdt closer to i386 2008-07-08 12:48:16 +02:00