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x86/vm_event: add hvm/vm_event.{h,c}
Created arch/x86/hvm/vm_event.c and include/asm-x86/hvm/vm_event.h, where HVM-specific vm_event-related code will live. This cleans up hvm_do_resume() and ensures that the vm_event maintainers are responsible for changes to that code. Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com> Acked-by: Tamas K Lengyel <tamas@tklengyel.com> Acked-by: Jan Beulich <jbeulich@suse.com> Release-acked-by: Julien Grall <julien.grall@arm.com>
This commit is contained in:
Razvan Cojocaru authored and Jan Beulich committed
1 parent
8bf68dca65
commit
1366a0e76d
5 files changed
+141
-61
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@@ -407,6 +407,7 @@ F: xen/arch/*/vm_event.c
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F: xen/arch/arm/mem_access.c
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F: xen/arch/x86/mm/mem_access.c
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F: xen/arch/x86/hvm/monitor.c
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F: xen/arch/x88/hvm/vm_event.c
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F: xen/common/mem_access.c
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F: xen/common/monitor.c
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F: xen/common/vm_event.c
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@@ -414,6 +415,7 @@ F: xen/include/*/mem_access.h
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F: xen/include/*/monitor.h
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F: xen/include/*/vm_event.h
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F: xen/include/asm-x86/hvm/monitor.h
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F: xen/include/asm-x86/hvm/vm_event.h
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VTPM
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M: Daniel De Graaf <dgdegra@tycho.nsa.gov>
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@@ -24,6 +24,7 @@ obj-y += stdvga.o
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obj-y += vioapic.o
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obj-y += viridian.o
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obj-y += vlapic.o
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obj-y += vm_event.o
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obj-y += vmsi.o
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obj-y += vpic.o
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obj-y += vpt.o
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+2
-61
@@ -34,7 +34,6 @@
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#include <xen/wait.h>
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#include <xen/mem_access.h>
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#include <xen/rangeset.h>
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#include <xen/vm_event.h>
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#include <xen/monitor.h>
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#include <xen/warning.h>
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#include <asm/shadow.h>
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@@ -61,6 +60,7 @@
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#include <asm/hvm/nestedhvm.h>
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#include <asm/hvm/monitor.h>
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#include <asm/hvm/ioreq.h>
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#include <asm/hvm/vm_event.h>
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#include <asm/altp2m.h>
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#include <asm/mtrr.h>
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#include <asm/apic.h>
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@@ -484,66 +484,7 @@ void hvm_do_resume(struct vcpu *v)
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return;
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if ( unlikely(v->arch.vm_event) )
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{
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struct monitor_write_data *w = &v->arch.vm_event->write_data;
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if ( unlikely(v->arch.vm_event->emulate_flags) )
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{
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enum emul_kind kind = EMUL_KIND_NORMAL;
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/*
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* Please observ the order here to match the flag descriptions
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* provided in public/vm_event.h
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*/
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if ( v->arch.vm_event->emulate_flags &
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VM_EVENT_FLAG_SET_EMUL_READ_DATA )
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kind = EMUL_KIND_SET_CONTEXT_DATA;
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else if ( v->arch.vm_event->emulate_flags &
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VM_EVENT_FLAG_EMULATE_NOWRITE )
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kind = EMUL_KIND_NOWRITE;
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else if ( v->arch.vm_event->emulate_flags &
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VM_EVENT_FLAG_SET_EMUL_INSN_DATA )
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kind = EMUL_KIND_SET_CONTEXT_INSN;
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hvm_emulate_one_vm_event(kind, TRAP_invalid_op,
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X86_EVENT_NO_EC);
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v->arch.vm_event->emulate_flags = 0;
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}
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if ( w->do_write.msr )
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{
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if ( hvm_msr_write_intercept(w->msr, w->value, 0) ==
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X86EMUL_EXCEPTION )
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hvm_inject_hw_exception(TRAP_gp_fault, 0);
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w->do_write.msr = 0;
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}
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if ( w->do_write.cr0 )
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{
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if ( hvm_set_cr0(w->cr0, 0) == X86EMUL_EXCEPTION )
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hvm_inject_hw_exception(TRAP_gp_fault, 0);
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w->do_write.cr0 = 0;
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}
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if ( w->do_write.cr4 )
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{
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if ( hvm_set_cr4(w->cr4, 0) == X86EMUL_EXCEPTION )
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hvm_inject_hw_exception(TRAP_gp_fault, 0);
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w->do_write.cr4 = 0;
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}
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if ( w->do_write.cr3 )
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{
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if ( hvm_set_cr3(w->cr3, 0) == X86EMUL_EXCEPTION )
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hvm_inject_hw_exception(TRAP_gp_fault, 0);
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w->do_write.cr3 = 0;
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}
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}
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hvm_vm_event_do_resume(v);
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/* Inject pending hw/sw event */
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if ( v->arch.hvm_vcpu.inject_event.vector >= 0 )
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@@ -0,0 +1,102 @@
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/*
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* arch/x86/hvm/vm_event.c
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*
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* HVM vm_event handling routines
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*
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* Copyright (c) 2004, Intel Corporation.
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* Copyright (c) 2005, International Business Machines Corporation.
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* Copyright (c) 2008, Citrix Systems, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <xen/sched.h>
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#include <xen/vm_event.h>
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#include <asm/hvm/support.h>
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#include <asm/vm_event.h>
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void hvm_vm_event_do_resume(struct vcpu *v)
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{
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struct monitor_write_data *w;
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ASSERT(v->arch.vm_event);
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w = &v->arch.vm_event->write_data;
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if ( unlikely(v->arch.vm_event->emulate_flags) )
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{
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enum emul_kind kind = EMUL_KIND_NORMAL;
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/*
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* Please observe the order here to match the flag descriptions
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* provided in public/vm_event.h
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*/
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if ( v->arch.vm_event->emulate_flags &
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VM_EVENT_FLAG_SET_EMUL_READ_DATA )
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kind = EMUL_KIND_SET_CONTEXT_DATA;
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else if ( v->arch.vm_event->emulate_flags &
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VM_EVENT_FLAG_EMULATE_NOWRITE )
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kind = EMUL_KIND_NOWRITE;
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else if ( v->arch.vm_event->emulate_flags &
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VM_EVENT_FLAG_SET_EMUL_INSN_DATA )
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kind = EMUL_KIND_SET_CONTEXT_INSN;
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hvm_emulate_one_vm_event(kind, TRAP_invalid_op,
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X86_EVENT_NO_EC);
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v->arch.vm_event->emulate_flags = 0;
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}
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if ( unlikely(w->do_write.cr0) )
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{
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if ( hvm_set_cr0(w->cr0, 0) == X86EMUL_EXCEPTION )
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hvm_inject_hw_exception(TRAP_gp_fault, 0);
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w->do_write.cr0 = 0;
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}
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if ( unlikely(w->do_write.cr4) )
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{
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if ( hvm_set_cr4(w->cr4, 0) == X86EMUL_EXCEPTION )
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hvm_inject_hw_exception(TRAP_gp_fault, 0);
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w->do_write.cr4 = 0;
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}
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if ( unlikely(w->do_write.cr3) )
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{
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if ( hvm_set_cr3(w->cr3, 0) == X86EMUL_EXCEPTION )
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hvm_inject_hw_exception(TRAP_gp_fault, 0);
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w->do_write.cr3 = 0;
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}
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if ( unlikely(w->do_write.msr) )
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{
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if ( hvm_msr_write_intercept(w->msr, w->value, 0) ==
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X86EMUL_EXCEPTION )
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hvm_inject_hw_exception(TRAP_gp_fault, 0);
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w->do_write.msr = 0;
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}
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}
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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@@ -0,0 +1,34 @@
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/*
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* include/asm-x86/hvm/vm_event.h
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*
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* Hardware virtual machine vm_event abstractions.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_X86_HVM_VM_EVENT_H__
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#define __ASM_X86_HVM_VM_EVENT_H__
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void hvm_vm_event_do_resume(struct vcpu *v);
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#endif /* __ASM_X86_HVM_VM_EVENT_H__ */
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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