diff options
| author |   Alexander Graf <agraf@suse.de> | 2010-04-16 00:11:57 +0200 |
|---|---|---|
| committer |   Avi Kivity <avi@redhat.com> | 2010-05-17 12:18:52 +0300 |
| commit | dd84c21748d9280f210565429b1bdb9b6353e8d2 (patch) | |
| tree | ce4de1c3942a5256df1550cb38b4ed33a35f5511 | |
| parent | KVM: PPC: Check max IRQ prio (diff) | |
| download | linux-dev-dd84c21748d9280f210565429b1bdb9b6353e8d2.tar.xz linux-dev-dd84c21748d9280f210565429b1bdb9b6353e8d2.zip | |
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>
| -rw-r--r-- | 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 e025e89fe93e..98c4b29a56f4 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 |