When an interrupt occurs we don't know yet if we're in guest context or
in host context. When in guest context, KVM needs to handle it.
So let's pull the same trick we did on Book3S_64: Just add a macro to
determine if we're in guest context or not and if so jump on to KVM code.
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Signed-off-by: Alexander Graf <ag...@suse.de>
---
arch/powerpc/kernel/head_32.S | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index e025e89..98c4b29 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -33,6 +33,7 @@
#include <asm/asm-offsets.h>
#include <asm/ptrace.h>
#include <asm/bug.h>
+#include <asm/kvm_book3s_asm.h>
/* 601 only have IBAT; cr0.eq is set on 601 when using this macro */
#define LOAD_BAT(n, reg, RA, RB) \
@@ -303,6 +304,7 @@ __secondary_hold_acknowledge:
*/
#define EXCEPTION(n, label, hdlr, xfer) \
. = n; \
+ DO_KVM n; \
label: \
EXCEPTION_PROLOG; \
addi r3,r1,STACK_FRAME_OVERHEAD; \
@@ -358,6 +360,7 @@ i##n:
\
* -- paulus.
*/
. = 0x200
+ DO_KVM 0x200
mtspr SPRN_SPRG_SCRATCH0,r10
mtspr SPRN_SPRG_SCRATCH1,r11
mfcr r10
@@ -381,6 +384,7 @@ i##n:
\
/* Data access exception. */
. = 0x300
+ DO_KVM 0x300
DataAccess:
EXCEPTION_PROLOG
mfspr r10,SPRN_DSISR
@@ -397,6 +401,7 @@ DataAccess:
/* Instruction access exception. */
. = 0x400
+ DO_KVM 0x400
InstructionAccess:
EXCEPTION_PROLOG
andis. r0,r9,0x4000 /* no pte found? */
@@ -413,6 +418,7 @@ InstructionAccess:
/* Alignment exception */
. = 0x600
+ DO_KVM 0x600
Alignment:
EXCEPTION_PROLOG
mfspr r4,SPRN_DAR
@@ -427,6 +433,7 @@ Alignment:
/* Floating-point unavailable */
. = 0x800
+ DO_KVM 0x800
FPUnavailable:
BEGIN_FTR_SECTION
/*
@@ -450,6 +457,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_FPU_UNAVAILABLE)
/* System call */
. = 0xc00
+ DO_KVM 0xc00
SystemCall:
EXCEPTION_PROLOG
EXC_XFER_EE_LITE(0xc00, DoSyscall)
@@ -467,9 +475,11 @@ SystemCall:
* by executing an altivec instruction.
*/
. = 0xf00
+ DO_KVM 0xf00
b PerformanceMonitor
. = 0xf20
+ DO_KVM 0xf20
b AltiVecUnavailable
/*
@@ -882,6 +892,10 @@ __secondary_start:
RFI
#endif /* CONFIG_SMP */
+#ifdef CONFIG_KVM_BOOK3S_HANDLER
+#include "../kvm/book3s_rmhandlers.S"
+#endif
+
/*
* Those generic dummy functions are kept for CPUs not
* included in CONFIG_6xx
--
1.6.0.2
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