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authorAlexander Graf <agraf@suse.de>2018-02-08 18:38:53 +0100
committerPaul Mackerras <paulus@ozlabs.org>2018-02-09 15:39:41 +1100
commitd20fe50a7b3c8f936f7347e9cab2e9dd89c1199d (patch)
tree006f51196b43e606bfa12c958bb005b2ab5a5158
parent790a9df5fbef982f2a6992194fe497dd2b794a3d (diff)
KVM: PPC: Book3S HV: Branch inside feature section
We ended up with code that did a conditional branch inside a feature section to code outside of the feature section. Depending on how the object file gets organized, that might mean we exceed the 14bit relocation limit for conditional branches: arch/powerpc/kvm/built-in.o:arch/powerpc/kvm/book3s_hv_rmhandlers.S:416:(__ftr_alt_97+0x8): relocation truncated to fit: R_PPC64_REL14 against `.text'+1ca4 So instead of doing a conditional branch outside of the feature section, let's just jump at the end of the same, making the branch very short. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
-rw-r--r--arch/powerpc/kvm/book3s_hv_rmhandlers.S3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index a7a20b85d8eb..7d1459e77de2 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -413,10 +413,11 @@ FTR_SECTION_ELSE
/* On P9 we use the split_info for coordinating LPCR changes */
lwz r4, KVM_SPLIT_DO_SET(r6)
cmpwi r4, 0
- beq 63f
+ beq 1f
mr r3, r6
bl kvmhv_p9_set_lpcr
nop
+1:
ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_300)
63:
/* Order load of vcpu after load of vcore */

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