diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_64_rmhandlers.S')
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_rmhandlers.S | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/arch/powerpc/kvm/book3s_64_rmhandlers.S b/arch/powerpc/kvm/book3s_64_rmhandlers.S deleted file mode 100644 index fb7dd2e9ac88..000000000000 --- a/arch/powerpc/kvm/book3s_64_rmhandlers.S +++ /dev/null @@ -1,131 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2, as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * Copyright SUSE Linux Products GmbH 2009 - * - * Authors: Alexander Graf <agraf@suse.de> - */ - -#include <asm/ppc_asm.h> -#include <asm/kvm_asm.h> -#include <asm/reg.h> -#include <asm/page.h> -#include <asm/asm-offsets.h> -#include <asm/exception-64s.h> - -/***************************************************************************** - * * - * Real Mode handlers that need to be in low physical memory * - * * - ****************************************************************************/ - - -.macro INTERRUPT_TRAMPOLINE intno - -.global kvmppc_trampoline_\intno -kvmppc_trampoline_\intno: - - mtspr SPRN_SPRG_SCRATCH0, r13 /* Save r13 */ - - /* - * First thing to do is to find out if we're coming - * from a KVM guest or a Linux process. - * - * To distinguish, we check a magic byte in the PACA - */ - mfspr r13, SPRN_SPRG_PACA /* r13 = PACA */ - std r12, (PACA_EXMC + EX_R12)(r13) - mfcr r12 - stw r12, (PACA_EXMC + EX_CCR)(r13) - lbz r12, PACA_KVM_IN_GUEST(r13) - cmpwi r12, 0 - bne ..kvmppc_handler_hasmagic_\intno - /* No KVM guest? Then jump back to the Linux handler! */ - lwz r12, (PACA_EXMC + EX_CCR)(r13) - mtcr r12 - ld r12, (PACA_EXMC + EX_R12)(r13) - mfspr r13, SPRN_SPRG_SCRATCH0 /* r13 = original r13 */ - b kvmppc_resume_\intno /* Get back original handler */ - - /* Now we know we're handling a KVM guest */ -..kvmppc_handler_hasmagic_\intno: - /* Unset guest state */ - li r12, 0 - stb r12, PACA_KVM_IN_GUEST(r13) - - std r1, (PACA_EXMC+EX_R9)(r13) - std r10, (PACA_EXMC+EX_R10)(r13) - std r11, (PACA_EXMC+EX_R11)(r13) - std r2, (PACA_EXMC+EX_R13)(r13) - - mfsrr0 r10 - mfsrr1 r11 - - /* Restore R1/R2 so we can handle faults */ - ld r1, PACAR1(r13) - ld r2, (PACA_EXMC+EX_SRR0)(r13) - - /* Let's store which interrupt we're handling */ - li r12, \intno - - /* Jump into the SLB exit code that goes to the highmem handler */ - b kvmppc_handler_trampoline_exit - -.endm - -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_SYSTEM_RESET -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_MACHINE_CHECK -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_DATA_STORAGE -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_DATA_SEGMENT -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_INST_STORAGE -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_INST_SEGMENT -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_EXTERNAL -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_ALIGNMENT -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_PROGRAM -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_FP_UNAVAIL -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_DECREMENTER -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_SYSCALL -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_TRACE -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_PERFMON -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_ALTIVEC -INTERRUPT_TRAMPOLINE BOOK3S_INTERRUPT_VSX - -/* - * This trampoline brings us back to a real mode handler - * - * Input Registers: - * - * R6 = SRR0 - * R7 = SRR1 - * LR = real-mode IP - * - */ -.global kvmppc_handler_lowmem_trampoline -kvmppc_handler_lowmem_trampoline: - - mtsrr0 r6 - mtsrr1 r7 - blr -kvmppc_handler_lowmem_trampoline_end: - -.global kvmppc_trampoline_lowmem -kvmppc_trampoline_lowmem: - .long kvmppc_handler_lowmem_trampoline - _stext - -.global kvmppc_trampoline_enter -kvmppc_trampoline_enter: - .long kvmppc_handler_trampoline_enter - _stext - -#include "book3s_64_slb.S" - |