From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, paulus@samba.org, agraf@suse.de,
clg@fr.ibm.com
Cc: linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,
kvm-ppc@vger.kernel.org
Subject: [PATCH 3/4] KVM: PPC: Book3S HV: Fix ABIv2 indirect branch issue
Date: Thu, 12 Jun 2014 18:16:10 +1000 [thread overview]
Message-ID: <20140612181610.3479c3f2@kryten> (raw)
In-Reply-To: <20140612181420.65b05675@kryten>
To establish addressability quickly, ABIv2 requires the target
address of the function being called to be in r12.
Signed-off-by: Anton Blanchard <anton@samba.org>
---
Index: b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
===================================================================
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -1920,8 +1920,8 @@ hcall_try_real_mode:
lwax r3,r3,r4
cmpwi r3,0
beq guest_exit_cont
- add r3,r3,r4
- mtctr r3
+ add r12,r3,r4
+ mtctr r12
mr r3,r9 /* get vcpu pointer */
ld r4,VCPU_GPR(R4)(r9)
bctrl
next prev parent reply other threads:[~2014-06-12 8:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-12 8:14 [PATCH 1/4] KVM: PPC: Book3S PR: Fix ABIv2 issues Anton Blanchard
2014-06-12 8:15 ` [PATCH 2/4] KVM: PPC: Book3S HV: " Anton Blanchard
2014-06-12 8:16 ` Anton Blanchard [this message]
2014-06-17 16:05 ` [PATCH 3/4] KVM: PPC: Book3S HV: Fix ABIv2 indirect branch issue Alexander Graf
2014-06-12 8:16 ` [PATCH 4/4] KVM: PPC: Assembly functions exported to modules need _GLOBAL_TOC() Anton Blanchard
2014-06-17 16:06 ` Alexander Graf
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