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[Qemu-devel] [PATCH v1 15/17] kvm: add vCPU failed memeory access proces
From: |
Denis Plotnikov |
Subject: |
[Qemu-devel] [PATCH v1 15/17] kvm: add vCPU failed memeory access processing |
Date: |
Wed, 18 Jul 2018 18:41:58 +0300 |
Is done with support of the KVM patch returning the faulting address.
Signed-off-by: Denis Plotnikov <address@hidden>
---
target/i386/kvm.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 3ac5302bc5..55b8860d1a 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -45,6 +45,8 @@
#include "hw/pci/msi.h"
#include "hw/pci/msix.h"
#include "migration/blocker.h"
+#include "migration/savevm.h"
+#include "migration/ram.h"
#include "exec/memattrs.h"
#include "trace.h"
@@ -3130,6 +3132,18 @@ static bool host_supports_vmx(void)
return ecx & CPUID_EXT_VMX;
}
+static int kvm_handle_fail_mem_access(CPUState *cpu)
+{
+ struct kvm_run *run = cpu->kvm_run;
+ int ret = ram_process_page_fault((void *)run->fail_mem_access.hva);
+
+ if (ret >= 0) {
+ cpu_resume(cpu);
+ }
+
+ return ret;
+}
+
#define VMX_INVALID_GUEST_STATE 0x80000021
int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
@@ -3188,6 +3202,9 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run
*run)
ioapic_eoi_broadcast(run->eoi.vector);
ret = 0;
break;
+ case KVM_EXIT_FAIL_MEM_ACCESS:
+ ret = kvm_handle_fail_mem_access(cs);
+ break;
default:
fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason);
ret = -1;
--
2.17.0
- Re: [Qemu-devel] [PATCH v1 01/17] migration: add background snapshot capability, (continued)
- [Qemu-devel] [PATCH v1 13/17] background snapshot: add write-protected page access handler function, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 06/17] background snapshot: add helpers to manage a copy of ram block list, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 08/17] migration: add helpers to change VM memory protection rights, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 02/17] bitops: add some atomic versions of bitmap operations, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 10/17] background snapshots: adapt the page queueing code for using page copies, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 09/17] background snapshot: extend RAM request for holding a page copy pointer, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 15/17] kvm: add vCPU failed memeory access processing,
Denis Plotnikov <=
- [Qemu-devel] [PATCH v1 14/17] kvm: add failed memeory access exit reason, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 12/17] ram: add background snapshot support in ram page saving part of migration, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 04/17] background snapshot: make a dedicated type for ram block list, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 07/17] background snapshot: introduce page buffer, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 11/17] background snapshot: add a memory page copying function, Denis Plotnikov, 2018/07/18
- [Qemu-devel] [PATCH v1 03/17] threads: add infrastructure to process sigsegv, Denis Plotnikov, 2018/07/18