Displaying 4 results from an estimated 4 matches for "kvm_mirror_page_fault".
2019 Oct 02
0
DANGER WILL ROBINSON, DANGER
...need
that. The workflow is:
userspace:
ptr = mmap(/dev/kvm-mirroring-device, virtual_addresse_of_target)
Then when the mirroring process access ptr it triggers page fault that
endup in the vm_operation_struct->fault() which is just doing:
kernel-kvm-mirroring-function:
kvm_mirror_page_fault(struct vm_fault *vmf) {
struct kvm_mirror_struct *kvmms;
kvmms = kvm_mirror_struct_from_file(vmf->vma->vm_file);
...
again:
hmm_range_register(&range);
hmm_range_snapshot(&range);
take_lock(kvmms->upda...
2019 Oct 02
2
DANGER WILL ROBINSON, DANGER
...erspace:
> ptr = mmap(/dev/kvm-mirroring-device, virtual_addresse_of_target)
>
> Then when the mirroring process access ptr it triggers page fault that
> endup in the vm_operation_struct->fault() which is just doing:
>
> kernel-kvm-mirroring-function:
> kvm_mirror_page_fault(struct vm_fault *vmf) {
> struct kvm_mirror_struct *kvmms;
>
> kvmms = kvm_mirror_struct_from_file(vmf->vma->vm_file);
> ...
> again:
> hmm_range_register(&range);
> hmm_range_snapshot(&range);
&...
2019 Oct 02
2
DANGER WILL ROBINSON, DANGER
...erspace:
> ptr = mmap(/dev/kvm-mirroring-device, virtual_addresse_of_target)
>
> Then when the mirroring process access ptr it triggers page fault that
> endup in the vm_operation_struct->fault() which is just doing:
>
> kernel-kvm-mirroring-function:
> kvm_mirror_page_fault(struct vm_fault *vmf) {
> struct kvm_mirror_struct *kvmms;
>
> kvmms = kvm_mirror_struct_from_file(vmf->vma->vm_file);
> ...
> again:
> hmm_range_register(&range);
> hmm_range_snapshot(&range);
&...
2019 Aug 09
6
[RFC PATCH v6 71/92] mm: add support for remote mapping
From: Mircea C?rjaliu <mcirjaliu at bitdefender.com>
The following two new mm exports are introduced:
* mm_remote_map(struct mm_struct *req_mm,
unsigned long req_hva,
unsigned long map_hva)
* mm_remote_unmap(unsigned long map_hva)
* mm_remote_reset(void)
* rmap_walk_remote(struct page *page,
struct rmap_walk_control *rwc)
This patch