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KVM: PPC: Add KVM intercept handlers
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 <benh@kernel.crashing.org> Signed-off-by: Alexander Graf <agraf@suse.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Avi Kivity <avi@redhat.com>
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1 changed files with 14 additions and 0 deletions
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@ -33,6 +33,7 @@
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#include <asm/asm-offsets.h>
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#include <asm/ptrace.h>
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#include <asm/bug.h>
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#include <asm/kvm_book3s_asm.h>
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/* 601 only have IBAT; cr0.eq is set on 601 when using this macro */
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#define LOAD_BAT(n, reg, RA, RB) \
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@ -303,6 +304,7 @@ __secondary_hold_acknowledge:
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*/
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#define EXCEPTION(n, label, hdlr, xfer) \
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. = n; \
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DO_KVM n; \
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label: \
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EXCEPTION_PROLOG; \
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addi r3,r1,STACK_FRAME_OVERHEAD; \
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@ -358,6 +360,7 @@ i##n: \
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* -- paulus.
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*/
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. = 0x200
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DO_KVM 0x200
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mtspr SPRN_SPRG_SCRATCH0,r10
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mtspr SPRN_SPRG_SCRATCH1,r11
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mfcr r10
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@ -381,6 +384,7 @@ i##n: \
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/* Data access exception. */
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. = 0x300
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DO_KVM 0x300
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DataAccess:
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EXCEPTION_PROLOG
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mfspr r10,SPRN_DSISR
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@ -397,6 +401,7 @@ DataAccess:
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/* Instruction access exception. */
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. = 0x400
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DO_KVM 0x400
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InstructionAccess:
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EXCEPTION_PROLOG
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andis. r0,r9,0x4000 /* no pte found? */
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@ -413,6 +418,7 @@ InstructionAccess:
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/* Alignment exception */
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. = 0x600
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DO_KVM 0x600
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Alignment:
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EXCEPTION_PROLOG
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mfspr r4,SPRN_DAR
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@ -427,6 +433,7 @@ Alignment:
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/* Floating-point unavailable */
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. = 0x800
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DO_KVM 0x800
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FPUnavailable:
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BEGIN_FTR_SECTION
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/*
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@ -450,6 +457,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_FPU_UNAVAILABLE)
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/* System call */
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. = 0xc00
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DO_KVM 0xc00
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SystemCall:
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EXCEPTION_PROLOG
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EXC_XFER_EE_LITE(0xc00, DoSyscall)
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@ -467,9 +475,11 @@ SystemCall:
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* by executing an altivec instruction.
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*/
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. = 0xf00
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DO_KVM 0xf00
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b PerformanceMonitor
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. = 0xf20
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DO_KVM 0xf20
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b AltiVecUnavailable
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/*
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@ -882,6 +892,10 @@ __secondary_start:
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RFI
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#endif /* CONFIG_SMP */
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#ifdef CONFIG_KVM_BOOK3S_HANDLER
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#include "../kvm/book3s_rmhandlers.S"
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#endif
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/*
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* Those generic dummy functions are kept for CPUs not
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* included in CONFIG_6xx
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