c15e568407
Upon an KVM_EXIT_MEMORY_FAULT exit, userspace needs to do the memory conversion on the RAMBlock to turn the memory into desired attribute, switching between private and shared. Currently only KVM_MEMORY_EXIT_FLAG_PRIVATE in flags is valid when KVM_EXIT_MEMORY_FAULT happens. Note, KVM_EXIT_MEMORY_FAULT makes sense only when the RAMBlock has guest_memfd memory backend. Note, KVM_EXIT_MEMORY_FAULT returns with -EFAULT, so special handling is added. When page is converted from shared to private, the original shared memory can be discarded via ram_block_discard_range(). Note, shared memory can be discarded only when it's not back'ed by hugetlb because hugetlb is supposed to be pre-allocated and no need for discarding. Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com> Co-developed-by: Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> Message-ID: <20240320083945.991426-13-michael.roth@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
36 lines
2.6 KiB
Plaintext
36 lines
2.6 KiB
Plaintext
# See docs/devel/tracing.rst for syntax documentation.
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# kvm-all.c
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kvm_ioctl(int type, void *arg) "type 0x%x, arg %p"
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kvm_vm_ioctl(int type, void *arg) "type 0x%x, arg %p"
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kvm_vcpu_ioctl(int cpu_index, int type, void *arg) "cpu_index %d, type 0x%x, arg %p"
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kvm_run_exit(int cpu_index, uint32_t reason) "cpu_index %d, reason %d"
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kvm_device_ioctl(int fd, int type, void *arg) "dev fd %d, type 0x%x, arg %p"
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kvm_failed_reg_get(uint64_t id, const char *msg) "Warning: Unable to retrieve ONEREG %" PRIu64 " from KVM: %s"
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kvm_failed_reg_set(uint64_t id, const char *msg) "Warning: Unable to set ONEREG %" PRIu64 " to KVM: %s"
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kvm_init_vcpu(int cpu_index, unsigned long arch_cpu_id) "index: %d id: %lu"
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kvm_irqchip_commit_routes(void) ""
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kvm_irqchip_add_msi_route(char *name, int vector, int virq) "dev %s vector %d virq %d"
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kvm_irqchip_update_msi_route(int virq) "Updating MSI route virq=%d"
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kvm_irqchip_release_virq(int virq) "virq %d"
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kvm_set_ioeventfd_mmio(int fd, uint64_t addr, uint32_t val, bool assign, uint32_t size, bool datamatch) "fd: %d @0x%" PRIx64 " val=0x%x assign: %d size: %d match: %d"
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kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint32_t val, bool assign, uint32_t size, bool datamatch) "fd: %d @0x%x val=0x%x assign: %d size: %d match: %d"
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kvm_set_user_memory(uint16_t as, uint16_t slot, uint32_t flags, uint64_t guest_phys_addr, uint64_t memory_size, uint64_t userspace_addr, uint32_t fd, uint64_t fd_offset, int ret) "AddrSpace#%d Slot#%d flags=0x%x gpa=0x%"PRIx64 " size=0x%"PRIx64 " ua=0x%"PRIx64 " guest_memfd=%d" " guest_memfd_offset=0x%" PRIx64 " ret=%d"
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kvm_clear_dirty_log(uint32_t slot, uint64_t start, uint32_t size) "slot#%"PRId32" start 0x%"PRIx64" size 0x%"PRIx32
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kvm_resample_fd_notify(int gsi) "gsi %d"
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kvm_dirty_ring_full(int id) "vcpu %d"
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kvm_dirty_ring_reap_vcpu(int id) "vcpu %d"
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kvm_dirty_ring_page(int vcpu, uint32_t slot, uint64_t offset) "vcpu %d fetch %"PRIu32" offset 0x%"PRIx64
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kvm_dirty_ring_reaper(const char *s) "%s"
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kvm_dirty_ring_reap(uint64_t count, int64_t t) "reaped %"PRIu64" pages (took %"PRIi64" us)"
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kvm_dirty_ring_reaper_kick(const char *reason) "%s"
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kvm_dirty_ring_flush(int finished) "%d"
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kvm_destroy_vcpu(void) ""
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kvm_failed_get_vcpu_mmap_size(void) ""
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kvm_cpu_exec(void) ""
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kvm_interrupt_exit_request(void) ""
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kvm_io_window_exit(void) ""
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kvm_run_exit_system_event(int cpu_index, uint32_t event_type) "cpu_index %d, system_even_type %"PRIu32
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kvm_convert_memory(uint64_t start, uint64_t size, const char *msg) "start 0x%" PRIx64 " size 0x%" PRIx64 " %s"
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kvm_memory_fault(uint64_t start, uint64_t size, uint64_t flags) "start 0x%" PRIx64 " size 0x%" PRIx64 " flags 0x%" PRIx64
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