84292e5659
Add the initial dirty ring buffer test.
The current test implements the userspace dirty ring collection, by
only reaping the dirty ring when the ring is full.
So it's still running synchronously like this:
vcpu main thread
1. vcpu dirties pages
2. vcpu gets dirty ring full
(userspace exit)
3. main thread waits until full
(so hardware buffers flushed)
4. main thread collects
5. main thread continues vcpu
6. vcpu continues, goes back to 1
We can't directly collects dirty bits during vcpu execution because
otherwise we can't guarantee the hardware dirty bits were flushed when
we collect and we're very strict on the dirty bits so otherwise we can
fail the future verify procedure. A follow up patch will make this
test to support async just like the existing dirty log test, by adding
a vcpu kick mechanism.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20201001012237.6111-1-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
117 lines
2.4 KiB
C
117 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* tools/testing/selftests/kvm/lib/kvm_util_internal.h
|
|
*
|
|
* Copyright (C) 2018, Google LLC.
|
|
*/
|
|
|
|
#ifndef SELFTEST_KVM_UTIL_INTERNAL_H
|
|
#define SELFTEST_KVM_UTIL_INTERNAL_H
|
|
|
|
#include "sparsebit.h"
|
|
|
|
#define KVM_DEV_PATH "/dev/kvm"
|
|
|
|
struct userspace_mem_region {
|
|
struct kvm_userspace_memory_region region;
|
|
struct sparsebit *unused_phy_pages;
|
|
int fd;
|
|
off_t offset;
|
|
void *host_mem;
|
|
void *mmap_start;
|
|
size_t mmap_size;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct vcpu {
|
|
struct list_head list;
|
|
uint32_t id;
|
|
int fd;
|
|
struct kvm_run *state;
|
|
struct kvm_dirty_gfn *dirty_gfns;
|
|
uint32_t fetch_index;
|
|
uint32_t dirty_gfns_count;
|
|
};
|
|
|
|
struct kvm_vm {
|
|
int mode;
|
|
unsigned long type;
|
|
int kvm_fd;
|
|
int fd;
|
|
unsigned int pgtable_levels;
|
|
unsigned int page_size;
|
|
unsigned int page_shift;
|
|
unsigned int pa_bits;
|
|
unsigned int va_bits;
|
|
uint64_t max_gfn;
|
|
struct list_head vcpus;
|
|
struct list_head userspace_mem_regions;
|
|
struct sparsebit *vpages_valid;
|
|
struct sparsebit *vpages_mapped;
|
|
bool has_irqchip;
|
|
bool pgd_created;
|
|
vm_paddr_t pgd;
|
|
vm_vaddr_t gdt;
|
|
vm_vaddr_t tss;
|
|
vm_vaddr_t idt;
|
|
vm_vaddr_t handlers;
|
|
uint32_t dirty_ring_size;
|
|
};
|
|
|
|
struct vcpu *vcpu_find(struct kvm_vm *vm, uint32_t vcpuid);
|
|
|
|
/*
|
|
* Virtual Translation Tables Dump
|
|
*
|
|
* Input Args:
|
|
* stream - Output FILE stream
|
|
* vm - Virtual Machine
|
|
* indent - Left margin indent amount
|
|
*
|
|
* Output Args: None
|
|
*
|
|
* Return: None
|
|
*
|
|
* Dumps to the FILE stream given by @stream, the contents of all the
|
|
* virtual translation tables for the VM given by @vm.
|
|
*/
|
|
void virt_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent);
|
|
|
|
/*
|
|
* Register Dump
|
|
*
|
|
* Input Args:
|
|
* stream - Output FILE stream
|
|
* regs - Registers
|
|
* indent - Left margin indent amount
|
|
*
|
|
* Output Args: None
|
|
*
|
|
* Return: None
|
|
*
|
|
* Dumps the state of the registers given by @regs, to the FILE stream
|
|
* given by @stream.
|
|
*/
|
|
void regs_dump(FILE *stream, struct kvm_regs *regs, uint8_t indent);
|
|
|
|
/*
|
|
* System Register Dump
|
|
*
|
|
* Input Args:
|
|
* stream - Output FILE stream
|
|
* sregs - System registers
|
|
* indent - Left margin indent amount
|
|
*
|
|
* Output Args: None
|
|
*
|
|
* Return: None
|
|
*
|
|
* Dumps the state of the system registers given by @sregs, to the FILE stream
|
|
* given by @stream.
|
|
*/
|
|
void sregs_dump(FILE *stream, struct kvm_sregs *sregs, uint8_t indent);
|
|
|
|
struct userspace_mem_region *
|
|
memslot2region(struct kvm_vm *vm, uint32_t memslot);
|
|
|
|
#endif /* SELFTEST_KVM_UTIL_INTERNAL_H */
|