powerpc/64s: Consolidate Hypervisor Maintenance 0xe60 interrupt

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 128b21b42f8ba06c9ab94d39f41f2fc8d5e3be5c..01950615d8d3d459f3a7d153c22381bcb7b5dc30 100644 (file)
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -945,6 +945,62 @@ EXC_COMMON(emulation_assist_common, 0xe40, emulation_assist_interrupt)
 
 
 __EXC_REAL_OOL_HV_DIRECT(hmi_exception, 0xe60, 0xe80, hmi_exception_early)
+__TRAMP_REAL_REAL_OOL_MASKABLE_HV(hmi_exception, 0xe60)
+EXC_VIRT_BEGIN(unused, 0x4e60, 0x4e80)
+       b       .       /* Can't happen, see v2.07 Book III-S section 6.5 */
+EXC_VIRT_END(unused, 0x4e60, 0x4e80)
+TRAMP_KVM_HV(PACA_EXGEN, 0xe60)
+TRAMP_REAL_BEGIN(hmi_exception_early)
+       EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, 0xe60)
+       mr      r10,r1                  /* Save r1                      */
+       ld      r1,PACAEMERGSP(r13)     /* Use emergency stack          */
+       subi    r1,r1,INT_FRAME_SIZE    /* alloc stack frame            */
+       std     r9,_CCR(r1)             /* save CR in stackframe        */
+       mfspr   r11,SPRN_HSRR0          /* Save HSRR0 */
+       std     r11,_NIP(r1)            /* save HSRR0 in stackframe     */
+       mfspr   r12,SPRN_HSRR1          /* Save SRR1 */
+       std     r12,_MSR(r1)            /* save SRR1 in stackframe      */
+       std     r10,0(r1)               /* make stack chain pointer     */
+       std     r0,GPR0(r1)             /* save r0 in stackframe        */
+       std     r10,GPR1(r1)            /* save r1 in stackframe        */
+       EXCEPTION_PROLOG_COMMON_2(PACA_EXGEN)
+       EXCEPTION_PROLOG_COMMON_3(0xe60)
+       addi    r3,r1,STACK_FRAME_OVERHEAD
+       bl      hmi_exception_realmode
+       /* Windup the stack. */
+       /* Move original HSRR0 and HSRR1 into the respective regs */
+       ld      r9,_MSR(r1)
+       mtspr   SPRN_HSRR1,r9
+       ld      r3,_NIP(r1)
+       mtspr   SPRN_HSRR0,r3
+       ld      r9,_CTR(r1)
+       mtctr   r9
+       ld      r9,_XER(r1)
+       mtxer   r9
+       ld      r9,_LINK(r1)
+       mtlr    r9
+       REST_GPR(0, r1)
+       REST_8GPRS(2, r1)
+       REST_GPR(10, r1)
+       ld      r11,_CCR(r1)
+       mtcr    r11
+       REST_GPR(11, r1)
+       REST_2GPRS(12, r1)
+       /* restore original r1. */
+       ld      r1,GPR1(r1)
+
+       /*
+        * Go to virtual mode and pull the HMI event information from
+        * firmware.
+        */
+       .globl hmi_exception_after_realmode
+hmi_exception_after_realmode:
+       SET_SCRATCH0(r13)
+       EXCEPTION_PROLOG_0(PACA_EXGEN)
+       b       tramp_real_hmi_exception
+
+EXC_COMMON_ASYNC(hmi_exception_common, 0xe60, handle_hmi_exception)
+
 
 __EXC_REAL_OOL_MASKABLE_HV(h_doorbell, 0xe80, 0xea0)
 
@@ -1088,9 +1144,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR)
 #endif
 
        /* moved from 0xe00 */
-__TRAMP_REAL_REAL_OOL_MASKABLE_HV(hmi_exception, 0xe60)
-TRAMP_KVM_HV(PACA_EXGEN, 0xe60)
-
 __TRAMP_REAL_REAL_OOL_MASKABLE_HV(h_doorbell, 0xe80)
 TRAMP_KVM_HV(PACA_EXGEN, 0xe80)
 
@@ -1233,7 +1286,6 @@ TRAMP_REAL_BEGIN(kvmppc_skip_Hinterrupt)
 /*** Common interrupt handlers ***/
 
 
-EXC_COMMON_ASYNC(hmi_exception_common, 0xe60, handle_hmi_exception)
 #ifdef CONFIG_PPC_DOORBELL
 EXC_COMMON_ASYNC(h_doorbell_common, 0xe80, doorbell_exception)
 #else
@@ -1265,10 +1317,6 @@ EXC_COMMON(altivec_assist_common, 0x1700, unknown_exception)
         * come here.
         */
 
-EXC_VIRT_BEGIN(unused, 0x4e60, 0x4e80)
-       b       .       /* Can't happen, see v2.07 Book III-S section 6.5 */
-EXC_VIRT_END(unused, 0x4e60, 0x4e80)
-
 __EXC_VIRT_OOL_MASKABLE_HV(h_doorbell, 0x4e80, 0x4ea0)
 
 __EXC_VIRT_OOL_MASKABLE_HV(h_virt_irq, 0x4ea0, 0x4ec0)
@@ -1405,55 +1453,6 @@ EXC_COMMON(cbe_thermal_common, 0x1800, cbe_thermal_exception)
 #endif /* CONFIG_CBE_RAS */
 
 
-TRAMP_REAL_BEGIN(hmi_exception_early)
-       EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, 0xe60)
-       mr      r10,r1                  /* Save r1                      */
-       ld      r1,PACAEMERGSP(r13)     /* Use emergency stack          */
-       subi    r1,r1,INT_FRAME_SIZE    /* alloc stack frame            */
-       std     r9,_CCR(r1)             /* save CR in stackframe        */
-       mfspr   r11,SPRN_HSRR0          /* Save HSRR0 */
-       std     r11,_NIP(r1)            /* save HSRR0 in stackframe     */
-       mfspr   r12,SPRN_HSRR1          /* Save SRR1 */
-       std     r12,_MSR(r1)            /* save SRR1 in stackframe      */
-       std     r10,0(r1)               /* make stack chain pointer     */
-       std     r0,GPR0(r1)             /* save r0 in stackframe        */
-       std     r10,GPR1(r1)            /* save r1 in stackframe        */
-       EXCEPTION_PROLOG_COMMON_2(PACA_EXGEN)
-       EXCEPTION_PROLOG_COMMON_3(0xe60)
-       addi    r3,r1,STACK_FRAME_OVERHEAD
-       bl      hmi_exception_realmode
-       /* Windup the stack. */
-       /* Move original HSRR0 and HSRR1 into the respective regs */
-       ld      r9,_MSR(r1)
-       mtspr   SPRN_HSRR1,r9
-       ld      r3,_NIP(r1)
-       mtspr   SPRN_HSRR0,r3
-       ld      r9,_CTR(r1)
-       mtctr   r9
-       ld      r9,_XER(r1)
-       mtxer   r9
-       ld      r9,_LINK(r1)
-       mtlr    r9
-       REST_GPR(0, r1)
-       REST_8GPRS(2, r1)
-       REST_GPR(10, r1)
-       ld      r11,_CCR(r1)
-       mtcr    r11
-       REST_GPR(11, r1)
-       REST_2GPRS(12, r1)
-       /* restore original r1. */
-       ld      r1,GPR1(r1)
-
-       /*
-        * Go to virtual mode and pull the HMI event information from
-        * firmware.
-        */
-       .globl hmi_exception_after_realmode
-hmi_exception_after_realmode:
-       SET_SCRATCH0(r13)
-       EXCEPTION_PROLOG_0(PACA_EXGEN)
-       b       tramp_real_hmi_exception
-
 #ifdef CONFIG_PPC_970_NAP
 TRAMP_REAL_BEGIN(power4_fixup_nap)
        andc    r9,r9,r10