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OpenCloudOS-Kernel
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Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 

Pull ARM fixes from Russell King:
 "A few fixes for the recently merged development updates:

   - the update to convert a code branch in the procinfo structure
     forgot to update the nommu code.

   - VDSO only supported for V7 CPUs and later.

   - VDSO build creates files which should be ignored by git but are not.

   - ensure that make arch/arm/vdso/ doesn't build if it isn't enabled"

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8344/1: VDSO: honor CONFIG_VDSO in Makefile
  ARM: 8343/1: VDSO: add build artifacts to .gitignore
  ARM: Fix nommu booting
  ARM: 8342/1: VDSO: depend on CPU_V7
This commit is contained in:
Linus Torvalds 2015-04-24 08:10:53 -07:00
parent 05f0c553e2 6b7acae74f
commit fb65d872d7
4 changed files with 11 additions and 9 deletions
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12
arch/arm/kernel/head-nommu.S
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@ -80,9 +80,9 @@ ENTRY(stext)
ldr r13, =__mmap_switched @ address to jump to after
@ initialising sctlr
adr lr, BSYM(1f) @ return (PIC) address
ARM( add pc, r10, #PROCINFO_INITFUNC )
THUMB( add r12, r10, #PROCINFO_INITFUNC )
THUMB( ret r12 )
ldr r12, [r10, #PROCINFO_INITFUNC]
add r12, r12, r10
ret r12
1: b __after_proc_init
ENDPROC(stext)
@ -117,9 +117,9 @@ ENTRY(secondary_startup)
adr lr, BSYM(__after_proc_init) @ return address
mov r13, r12 @ __secondary_switched address
ARM( add pc, r10, #PROCINFO_INITFUNC )
THUMB( add r12, r10, #PROCINFO_INITFUNC )
THUMB( ret r12 )
ldr r12, [r10, #PROCINFO_INITFUNC]
add r12, r12, r10
ret r12
ENDPROC(secondary_startup)
ENTRY(__secondary_switched)

2
arch/arm/mm/Kconfig
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@ -827,7 +827,7 @@ config KUSER_HELPERS
config VDSO
bool "Enable VDSO for acceleration of some system calls"
depends on AEABI && MMU
depends on AEABI && MMU && CPU_V7
default y if ARM_ARCH_TIMER
select GENERIC_TIME_VSYSCALL
help

2
arch/arm/vdso/.gitignore vendored
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@ -1 +1,3 @@
vdso.lds
vdso.so.raw
vdsomunge

4
arch/arm/vdso/Makefile
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@ -10,8 +10,8 @@ ccflags-y := -shared -fPIC -fno-common -fno-builtin -fno-stack-protector
ccflags-y += -nostdlib -Wl,-soname=linux-vdso.so.1 -DDISABLE_BRANCH_PROFILING
ccflags-y += -Wl,--no-undefined $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
obj-y += vdso.o
extra-y += vdso.lds
obj-$(CONFIG_VDSO) += vdso.o
extra-$(CONFIG_VDSO) += vdso.lds
CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
CFLAGS_REMOVE_vdso.o = -pg