linux-toradex.git/arch/h8300, branch v4.2.7

lib/decompressors: use real out buf size for gunzip with kernel

2015-09-29T17:33:37+00:00

commit 2d3862d26e67a59340ba1cf1748196c76c5787de upstream.

When loading x86 64bit kernel above 4GiB with patched grub2, got kernel
gunzip error.

| early console in decompress_kernel
| decompress_kernel:
|       input: [0x807f2143b4-0x807ff61aee]
|      output: [0x807cc00000-0x807f3ea29b] 0x027ea29c: output_len
| boot via startup_64
| KASLR using RDTSC...
|  new output: [0x46fe000000-0x470138cfff] 0x0338d000: output_run_size
|  decompress: [0x46fe000000-0x47007ea29b] <=== [0x807f2143b4-0x807ff61aee]
|
| Decompressing Linux... gz...
|
| uncompression error
|
| -- System halted

the new buffer is at 0x46fe000000ULL, decompressor_gzip is using
0xffffffb901ffffff as out_len.  gunzip in lib/zlib_inflate/inflate.c cap
that len to 0x01ffffff and decompress fails later.

We could hit this problem with crashkernel booting that uses kexec loading
kernel above 4GiB.

We have decompress_* support:
    1. inbuf[]/outbuf[] for kernel preboot.
    2. inbuf[]/flush() for initramfs
    3. fill()/flush() for initrd.
This bug only affect kernel preboot path that use outbuf[].

Add __decompress and take real out_buf_len for gunzip instead of guessing
wrong buf size.

Fixes: 1431574a1c4 (lib/decompressors: fix "no limit" output buffer length)
Signed-off-by: Yinghai Lu 
Cc: Alexandre Courbot 
Cc: Jon Medhurst 
Cc: Stephen Warren 
Cc: "H. Peter Anvin" 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

mm: clean up per architecture MM hook header files

2015-07-17T23:39:53+00:00

Commit 2ae416b142b6 ("mm: new mm hook framework") introduced an empty
header file (mm-arch-hooks.h) for every architecture, even those which
doesn't need to define mm hooks.

As suggested by Geert Uytterhoeven, this could be cleaned through the use
of a generic header file included via each per architecture
asm/include/Kbuild file.

The PowerPC architecture is not impacted here since this architecture has
to defined the arch_remap MM hook.

Signed-off-by: Laurent Dufour 
Suggested-by: Geert Uytterhoeven 
Acked-by: Geert Uytterhoeven 
Acked-by: Vineet Gupta 
Cc: Oleg Nesterov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

h8300: Always build dtb

2015-06-23T04:36:00+00:00

Signed-off-by: Yoshinori Sato

h8300: Remove ARCH_WANT_IPC_PARSE_VERSION

2015-06-23T04:35:59+00:00

Signed-off-by: Yoshinori Sato

h8300: Symbol name fix

2015-06-23T04:35:58+00:00

Signed-off-by: Yoshinori Sato

h8300: devicetree source

2015-06-23T04:35:57+00:00

- h8300h_sim: GDB H8/300H simulator
- h8s_sim: GDB H8S simulator
- edosk2674: Renesas EDOSK2674R Evalution board

Signed-off-by: Yoshinori Sato

h8300: configs

2015-06-23T04:35:56+00:00

h8300h-sim_defconfig: GDB simulator H8/300H mode.
h8s-sim_defconfig: GDB simulator H8S mode.
edosk2674_defconfig: Renesas EDOSK2674R.

Signed-off-by: Yoshinori Sato

h8300: Build scripts

2015-06-23T04:35:54+00:00

h8300's Makefile, Kconfig and memory layout.

Signed-off-by: Yoshinori Sato

h8300: library functions

2015-06-23T04:35:54+00:00

Signed-off-by: Yoshinori Sato

h8300: Memory management

2015-06-23T04:35:53+00:00

Signed-off-by: Yoshinori Sato