xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

MIPS: 64-bit: Detect virtual memory size

Browse Source 
Linux kernel 2.6.32 and later allocate address space from the top of the
kernel virtual memory address space.

This patch implements virtual memory size detection for 64 bit MIPS CPUs
to avoid resulting crashes.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/935/
Reviewed-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Guenter Roeck
2010-02-02 08:52:20 -08:00
committed by Ralf Baechle
parent ba284b1f19
commit 91dfc423cc
4 changed files with 24 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
arch/mips/include/asm/cpu-features.h
View File

@@ -191,6 +191,9 @@
# ifndef cpu_has_64bit_addresses
# define cpu_has_64bit_addresses 0
# endif
# ifndef cpu_vmbits
# define cpu_vmbits 31
# endif
#endif
#ifdef CONFIG_64BIT
@@ -209,6 +212,10 @@
# ifndef cpu_has_64bit_addresses
# define cpu_has_64bit_addresses 1
# endif
# ifndef cpu_vmbits
# define cpu_vmbits cpu_data[0].vmbits
# define __NEED_VMBITS_PROBE
# endif
#endif
#if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)