diff options
author | Ian Munsie <imunsie@au1.ibm.com> | 2013-02-07 15:46:58 +0000 |
---|---|---|
committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-02-08 14:05:50 +1100 |
commit | 2468dcf641e4f3e1b0153e3e11ca20740b2f4ce8 (patch) | |
tree | 02a1ca877b20fd0975befc2554957ee4b535a6a0 /arch/powerpc/kernel/asm-offsets.c | |
parent | 14b6f00f8a4fdec5ccd45a0710284de301a61628 (diff) | |
download | op-kernel-dev-2468dcf641e4f3e1b0153e3e11ca20740b2f4ce8.zip op-kernel-dev-2468dcf641e4f3e1b0153e3e11ca20740b2f4ce8.tar.gz |
powerpc: Add support for context switching the TAR register
This patch adds support for enabling and context switching the Target
Address Register in Power8. The TAR is a new special purpose register
that can be used for computed branches with the bctar[l] (branch
conditional to TAR) instruction in the same manner as the count and link
registers.
Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/asm-offsets.c')
-rw-r--r-- | arch/powerpc/kernel/asm-offsets.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index e39ca55..beddba4 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -122,6 +122,10 @@ int main(void) DEFINE(THREAD_KVM_VCPU, offsetof(struct thread_struct, kvm_vcpu)); #endif +#ifdef CONFIG_PPC_BOOK3S_64 + DEFINE(THREAD_TAR, offsetof(struct thread_struct, tar)); +#endif + DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); DEFINE(TI_LOCAL_FLAGS, offsetof(struct thread_info, local_flags)); DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count)); |