Feng Tang 05ab1d8a4b x86/mm: Expand static page table for fixmap space ...

We met a kernel panic when enabling earlycon, which is due to the fixmap
address of earlycon is not statically setup.

Currently the static fixmap setup in head_64.S only covers 2M virtual
address space, while it actually could be in 4M space with different
kernel configurations, e.g. when VSYSCALL emulation is disabled.

So increase the static space to 4M for now by defining FIXMAP_PMD_NUM to 2,
and add a build time check to ensure that the fixmap is covered by the
initial static page tables.

Fixes: 1ad83c858c ("x86_64,vsyscall: Make vsyscall emulation configurable")
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: kernel test robot <rong.a.chen@intel.com>
Reviewed-by: Juergen Gross <jgross@suse.com> (Xen parts)
Cc: H Peter Anvin <hpa@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andy Lutomirsky <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180920025828.23699-1-feng.tang@intel.com

2018-09-20 23:17:22 +02:00

..

amdtopology.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cpu_entry_area.c

x86: Add entry trampolines to kcore

2018-08-14 19:13:26 -03:00

debug_pagetables.c

x86/efi: Replace efi_pgd with efi_mm.pgd

2018-03-12 11:05:05 +01:00

dump_pagetables.c

x86/mm/pti: Move user W+X check into pti_finalize()

2018-08-10 21:12:45 +02:00

extable.c

x86/extable: Mark exception handler functions visible

2018-01-14 20:04:16 +01:00

fault.c

x86/dumpstack: Don't dump kernel memory based on usermode RIP

2018-08-31 17:08:22 +02:00

highmem_32.c

x86/mm: Audit and remove any unnecessary uses of module.h

2016-07-14 13:04:20 +02:00

hugetlbpage.c

x86/mm: Prevent non-MAP_FIXED mapping across DEFAULT_MAP_WINDOW border

2017-11-16 11:43:11 +01:00

ident_map.c

x86/mm: Stop pretending pgtable_l5_enabled is a variable

2018-05-19 11:56:57 +02:00

init_32.c

treewide: use PHYS_ADDR_MAX to avoid type casting ULLONG_MAX

2018-06-15 07:55:25 +09:00

init_64.c

Merge branch 'x86/pti-urgent' into x86/pti

2018-08-06 20:56:34 +02:00

init.c

x86/mm: Add .bss..decrypted section to hold shared variables

2018-09-15 20:48:45 +02:00

iomap_32.c

x86/mm: Do not auto-massage page protections

2018-04-12 09:04:22 +02:00

ioremap.c

x86/mm: Do not auto-massage page protections

2018-04-12 09:04:22 +02:00

kasan_init_64.c

x86/mm: Stop pretending pgtable_l5_enabled is a variable

2018-05-19 11:56:57 +02:00

kaslr.c

x86/mm: Stop pretending pgtable_l5_enabled is a variable

2018-05-19 11:56:57 +02:00

kmmio.c

x86/mm/kmmio: Make the tracer robust against L1TF

2018-08-08 22:28:34 +02:00

Makefile

x86/mm/sme: Disable stack protection for mem_encrypt_identity.c

2018-02-28 15:24:12 +01:00

mem_encrypt_boot.S

x86/mm/sme, objtool: Annotate indirect call in sme_encrypt_execute()

2018-02-21 09:05:04 +01:00

mem_encrypt_identity.c

x86/mm: Decouple dynamic __PHYSICAL_MASK from AMD SME

2018-06-06 13:38:01 +02:00

mem_encrypt.c

x86/mm: Add .bss..decrypted section to hold shared variables

2018-09-15 20:48:45 +02:00

mm_internal.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mmap.c

x86/speculation/l1tf: Fix off-by-one error when warning that system has too much RAM

2018-08-24 09:51:14 +02:00

mmio-mod.c

x86: do not use print_symbol()

2018-01-05 15:23:01 +01:00

mpx.c

Merge branch 'x86/mpx' into x86/asm, to pick up dependent commits

2017-11-08 10:55:48 +01:00

numa_32.c

x86/mm/32: Remove unused node_memmap_size_bytes() & CONFIG_NEED_NODE_MEMMAP_SIZE logic

2018-03-27 08:45:02 +02:00

numa_64.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

numa_emulation.c

x86/numa_emulation: Introduce uniform split capability

2018-07-06 18:48:58 +02:00

numa_internal.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

numa.c

x86: Remove pr_fmt duplicate logging prefixes

2018-05-13 21:25:18 +02:00

pageattr-test.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

pageattr.c

x86/mce: Fix set_mce_nospec() to avoid #GP fault

2018-09-01 14:59:19 +02:00

pat_internal.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

pat_rbtree.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

pat.c

x86/mm/pat: Prepare {reserve, free}_memtype() for "decoy" addresses

2018-08-20 09:22:45 -07:00

pf_in.c

x86/mm: Audit and remove any unnecessary uses of module.h

2016-07-14 13:04:20 +02:00

pf_in.h

x86 mmiotrace: move files into arch/x86/mm/.

2008-05-24 11:25:37 +02:00

pgtable_32.c

x86/mm: Rename flush_tlb_single() and flush_tlb_one() to __flush_tlb_one_[user|kernel]()

2018-02-15 01:15:52 +01:00

pgtable.c

x86/mm: Expand static page table for fixmap space

2018-09-20 23:17:22 +02:00

physaddr.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

physaddr.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

pkeys.c

x86/pkeys: Override pkey when moving away from PROT_EXEC

2018-05-14 11:14:45 +02:00

pti.c

x86/pti: Fix section mismatch warning/error

2018-09-02 11:24:41 +02:00

setup_nx.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

srat.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

testmmiotrace.c

Annotate hardware config module parameters in arch/x86/mm/

2017-04-04 16:54:21 +01:00

tlb.c

x86/nmi: Fix NMI uaccess race against CR3 switching

2018-08-31 17:08:22 +02:00