/* Save R1 in the PACA */
std r1, HSTATE_HOST_R1(r13)
+ /* Increment yield count if they have a VPA */
+ ld r3, VCPU_VPA(r4)
+ cmpdi r3, 0
+ beq 25f
+ lwz r5, LPPACA_YIELDCOUNT(r3)
+ addi r5, r5, 1
+ stw r5, LPPACA_YIELDCOUNT(r3)
+25:
/* Load up DAR and DSISR */
ld r5, VCPU_DAR(r4)
lwz r6, VCPU_DSISR(r4)
cmpwi r3,0
bge ignore_hdec
2:
+ /* See if this is something we can handle in real mode */
+ cmpwi r12,BOOK3S_INTERRUPT_SYSCALL
+ beq hcall_try_real_mode
+hcall_real_cont:
/* Check for mediated interrupts (could be done earlier really ...) */
cmpwi r12,BOOK3S_INTERRUPT_EXTERNAL
std r5, VCPU_SPRG2(r9)
std r6, VCPU_SPRG3(r9)
- /* Save PMU registers */
+ /* Increment yield count if they have a VPA */
+ ld r8, VCPU_VPA(r9) /* do they have a VPA? */
+ cmpdi r8, 0
+ beq 25f
+ lwz r3, LPPACA_YIELDCOUNT(r8)
+ addi r3, r3, 1
+ stw r3, LPPACA_YIELDCOUNT(r8)
+25:
+ /* Save PMU registers if requested */
+ /* r8 and cr0.eq are live here */
li r3, 1
sldi r3, r3, 31 /* MMCR0_FC (freeze counters) bit */
mfspr r4, SPRN_MMCR0 /* save MMCR0 */
mtspr SPRN_MMCR0, r3 /* freeze all counters, disable ints */
isync
- mfspr r5, SPRN_MMCR1
+ beq 21f /* if no VPA, save PMU stuff anyway */
+ lbz r7, LPPACA_PMCINUSE(r8)
+ cmpwi r7, 0 /* did they ask for PMU stuff to be saved? */
+ bne 21f
+ std r3, VCPU_MMCR(r9) /* if not, set saved MMCR0 to FC */
+ b 22f
+21: mfspr r5, SPRN_MMCR1
mfspr r6, SPRN_MMCRA
std r4, VCPU_MMCR(r9)
std r5, VCPU_MMCR + 8(r9)
mfspr r7,SPRN_HDSISR
b 7b
+/*
+ * Try to handle an hcall in real mode.
+ * Returns to the guest if we handle it, or continues on up to
+ * the kernel if we can't (i.e. if we don't have a handler for
+ * it, or if the handler returns H_TOO_HARD).
+ */
+ .globl hcall_try_real_mode
+hcall_try_real_mode:
+ ld r3,VCPU_GPR(r3)(r9)
+ andi. r0,r11,MSR_PR
+ bne hcall_real_cont
+ clrrdi r3,r3,2
+ cmpldi r3,hcall_real_table_end - hcall_real_table
+ bge hcall_real_cont
+ LOAD_REG_ADDR(r4, hcall_real_table)
+ lwzx r3,r3,r4
+ cmpwi r3,0
+ beq hcall_real_cont
+ add r3,r3,r4
+ mtctr r3
+ mr r3,r9 /* get vcpu pointer */
+ ld r4,VCPU_GPR(r4)(r9)
+ bctrl
+ cmpdi r3,H_TOO_HARD
+ beq hcall_real_fallback
+ ld r4,HSTATE_KVM_VCPU(r13)
+ std r3,VCPU_GPR(r3)(r4)
+ ld r10,VCPU_PC(r4)
+ ld r11,VCPU_MSR(r4)
+ b fast_guest_return
+
+ /* We've attempted a real mode hcall, but it's punted it back
+ * to userspace. We need to restore some clobbered volatiles
+ * before resuming the pass-it-to-qemu path */
+hcall_real_fallback:
+ li r12,BOOK3S_INTERRUPT_SYSCALL
+ ld r9, HSTATE_KVM_VCPU(r13)
+ ld r11, VCPU_MSR(r9)
+
+ b hcall_real_cont
+
+ .globl hcall_real_table
+hcall_real_table:
+ .long 0 /* 0 - unused */
+ .long .kvmppc_h_remove - hcall_real_table
+ .long .kvmppc_h_enter - hcall_real_table
+ .long .kvmppc_h_read - hcall_real_table
+ .long 0 /* 0x10 - H_CLEAR_MOD */
+ .long 0 /* 0x14 - H_CLEAR_REF */
+ .long .kvmppc_h_protect - hcall_real_table
+ .long 0 /* 0x1c - H_GET_TCE */
+ .long 0 /* 0x20 - H_SET_TCE */
+ .long 0 /* 0x24 - H_SET_SPRG0 */
+ .long .kvmppc_h_set_dabr - hcall_real_table
+ .long 0 /* 0x2c */
+ .long 0 /* 0x30 */
+ .long 0 /* 0x34 */
+ .long 0 /* 0x38 */
+ .long 0 /* 0x3c */
+ .long 0 /* 0x40 */
+ .long 0 /* 0x44 */
+ .long 0 /* 0x48 */
+ .long 0 /* 0x4c */
+ .long 0 /* 0x50 */
+ .long 0 /* 0x54 */
+ .long 0 /* 0x58 */
+ .long 0 /* 0x5c */
+ .long 0 /* 0x60 */
+ .long 0 /* 0x64 */
+ .long 0 /* 0x68 */
+ .long 0 /* 0x6c */
+ .long 0 /* 0x70 */
+ .long 0 /* 0x74 */
+ .long 0 /* 0x78 */
+ .long 0 /* 0x7c */
+ .long 0 /* 0x80 */
+ .long 0 /* 0x84 */
+ .long 0 /* 0x88 */
+ .long 0 /* 0x8c */
+ .long 0 /* 0x90 */
+ .long 0 /* 0x94 */
+ .long 0 /* 0x98 */
+ .long 0 /* 0x9c */
+ .long 0 /* 0xa0 */
+ .long 0 /* 0xa4 */
+ .long 0 /* 0xa8 */
+ .long 0 /* 0xac */
+ .long 0 /* 0xb0 */
+ .long 0 /* 0xb4 */
+ .long 0 /* 0xb8 */
+ .long 0 /* 0xbc */
+ .long 0 /* 0xc0 */
+ .long 0 /* 0xc4 */
+ .long 0 /* 0xc8 */
+ .long 0 /* 0xcc */
+ .long 0 /* 0xd0 */
+ .long 0 /* 0xd4 */
+ .long 0 /* 0xd8 */
+ .long 0 /* 0xdc */
+ .long 0 /* 0xe0 */
+ .long 0 /* 0xe4 */
+ .long 0 /* 0xe8 */
+ .long 0 /* 0xec */
+ .long 0 /* 0xf0 */
+ .long 0 /* 0xf4 */
+ .long 0 /* 0xf8 */
+ .long 0 /* 0xfc */
+ .long 0 /* 0x100 */
+ .long 0 /* 0x104 */
+ .long 0 /* 0x108 */
+ .long 0 /* 0x10c */
+ .long 0 /* 0x110 */
+ .long 0 /* 0x114 */
+ .long 0 /* 0x118 */
+ .long 0 /* 0x11c */
+ .long 0 /* 0x120 */
+ .long .kvmppc_h_bulk_remove - hcall_real_table
+hcall_real_table_end:
+
ignore_hdec:
mr r4,r9
b fast_guest_return
LOAD_REG_IMMEDIATE(r11,MSR_SF | MSR_ME);
b fast_guest_return
+_GLOBAL(kvmppc_h_set_dabr)
+ std r4,VCPU_DABR(r3)
+ mtspr SPRN_DABR,r4
+ li r3,0
+ blr
+
/*
* Save away FP, VMX and VSX registers.
* r3 = vcpu pointer
-*/
+ */
_GLOBAL(kvmppc_save_fp)
mfmsr r9
ori r8,r9,MSR_FP
git.openpandora.org / pandora-kernel.git / blobdiff