diff options
author | Paolo Bonzini <pbonzini@redhat.com> | 2020-08-09 13:24:02 -0400 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-08-09 13:24:02 -0400 |
commit | 3ff0327899800a190782005483c96f4d7862ecd9 (patch) | |
tree | 6a78b97e4293157798c4ec24817a8b6a7ed3ad5e /arch/powerpc/kvm/book3s_interrupts.S | |
parent | 43bd9ef42b3b862c97f1f4e86bf3ace890bef924 (diff) | |
parent | 81ab595ddd3c3036806b460526e1fbc5b271ff33 (diff) |
Merge tag 'kvm-ppc-next-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into kvm-next-5.6
PPC KVM update for 5.9
- Improvements and bug-fixes for secure VM support, giving reduced startup
time and memory hotplug support.
- Locking fixes in nested KVM code
- Increase number of guests supported by HV KVM to 4094
- Preliminary POWER10 support
Diffstat (limited to 'arch/powerpc/kvm/book3s_interrupts.S')
-rw-r--r-- | arch/powerpc/kvm/book3s_interrupts.S | 56 |
1 files changed, 27 insertions, 29 deletions
diff --git a/arch/powerpc/kvm/book3s_interrupts.S b/arch/powerpc/kvm/book3s_interrupts.S index 607a9b99c334..25a3679fb590 100644 --- a/arch/powerpc/kvm/book3s_interrupts.S +++ b/arch/powerpc/kvm/book3s_interrupts.S @@ -55,8 +55,7 @@ ****************************************************************************/ /* Registers: - * r3: kvm_run pointer - * r4: vcpu pointer + * r3: vcpu pointer */ _GLOBAL(__kvmppc_vcpu_run) @@ -68,8 +67,8 @@ kvm_start_entry: /* Save host state to the stack */ PPC_STLU r1, -SWITCH_FRAME_SIZE(r1) - /* Save r3 (kvm_run) and r4 (vcpu) */ - SAVE_2GPRS(3, r1) + /* Save r3 (vcpu) */ + SAVE_GPR(3, r1) /* Save non-volatile registers (r14 - r31) */ SAVE_NVGPRS(r1) @@ -82,47 +81,46 @@ kvm_start_entry: PPC_STL r0, _LINK(r1) /* Load non-volatile guest state from the vcpu */ - VCPU_LOAD_NVGPRS(r4) + VCPU_LOAD_NVGPRS(r3) kvm_start_lightweight: /* Copy registers into shadow vcpu so we can access them in real mode */ - mr r3, r4 bl FUNC(kvmppc_copy_to_svcpu) nop - REST_GPR(4, r1) + REST_GPR(3, r1) #ifdef CONFIG_PPC_BOOK3S_64 /* Get the dcbz32 flag */ - PPC_LL r3, VCPU_HFLAGS(r4) - rldicl r3, r3, 0, 63 /* r3 &= 1 */ - stb r3, HSTATE_RESTORE_HID5(r13) + PPC_LL r0, VCPU_HFLAGS(r3) + rldicl r0, r0, 0, 63 /* r3 &= 1 */ + stb r0, HSTATE_RESTORE_HID5(r13) /* Load up guest SPRG3 value, since it's user readable */ - lwz r3, VCPU_SHAREDBE(r4) - cmpwi r3, 0 - ld r5, VCPU_SHARED(r4) + lbz r4, VCPU_SHAREDBE(r3) + cmpwi r4, 0 + ld r5, VCPU_SHARED(r3) beq sprg3_little_endian sprg3_big_endian: #ifdef __BIG_ENDIAN__ - ld r3, VCPU_SHARED_SPRG3(r5) + ld r4, VCPU_SHARED_SPRG3(r5) #else addi r5, r5, VCPU_SHARED_SPRG3 - ldbrx r3, 0, r5 + ldbrx r4, 0, r5 #endif b after_sprg3_load sprg3_little_endian: #ifdef __LITTLE_ENDIAN__ - ld r3, VCPU_SHARED_SPRG3(r5) + ld r4, VCPU_SHARED_SPRG3(r5) #else addi r5, r5, VCPU_SHARED_SPRG3 - ldbrx r3, 0, r5 + ldbrx r4, 0, r5 #endif after_sprg3_load: - mtspr SPRN_SPRG3, r3 + mtspr SPRN_SPRG3, r4 #endif /* CONFIG_PPC_BOOK3S_64 */ - PPC_LL r4, VCPU_SHADOW_MSR(r4) /* get shadow_msr */ + PPC_LL r4, VCPU_SHADOW_MSR(r3) /* get shadow_msr */ /* Jump to segment patching handler and into our guest */ bl FUNC(kvmppc_entry_trampoline) @@ -146,7 +144,7 @@ after_sprg3_load: * */ - PPC_LL r3, GPR4(r1) /* vcpu pointer */ + PPC_LL r3, GPR3(r1) /* vcpu pointer */ /* * kvmppc_copy_from_svcpu can clobber volatile registers, save @@ -169,7 +167,7 @@ after_sprg3_load: #endif /* CONFIG_PPC_BOOK3S_64 */ /* R7 = vcpu */ - PPC_LL r7, GPR4(r1) + PPC_LL r7, GPR3(r1) PPC_STL r14, VCPU_GPR(R14)(r7) PPC_STL r15, VCPU_GPR(R15)(r7) @@ -190,11 +188,11 @@ after_sprg3_load: PPC_STL r30, VCPU_GPR(R30)(r7) PPC_STL r31, VCPU_GPR(R31)(r7) - /* Pass the exit number as 3rd argument to kvmppc_handle_exit */ - lwz r5, VCPU_TRAP(r7) + /* Pass the exit number as 2nd argument to kvmppc_handle_exit */ + lwz r4, VCPU_TRAP(r7) - /* Restore r3 (kvm_run) and r4 (vcpu) */ - REST_2GPRS(3, r1) + /* Restore r3 (vcpu) */ + REST_GPR(3, r1) bl FUNC(kvmppc_handle_exit_pr) /* If RESUME_GUEST, get back in the loop */ @@ -223,11 +221,11 @@ kvm_loop_heavyweight: PPC_LL r4, _LINK(r1) PPC_STL r4, (PPC_LR_STKOFF + SWITCH_FRAME_SIZE)(r1) - /* Load vcpu and cpu_run */ - REST_2GPRS(3, r1) + /* Load vcpu */ + REST_GPR(3, r1) /* Load non-volatile guest state from the vcpu */ - VCPU_LOAD_NVGPRS(r4) + VCPU_LOAD_NVGPRS(r3) /* Jump back into the beginning of this function */ b kvm_start_lightweight @@ -235,7 +233,7 @@ kvm_loop_heavyweight: kvm_loop_lightweight: /* We'll need the vcpu pointer */ - REST_GPR(4, r1) + REST_GPR(3, r1) /* Jump back into the beginning of this function */ b kvm_start_lightweight |