lkml.org 
[lkml]   [2017]   [Oct]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH RFC 00/10] Intel EPT-Based Sub-page Write Protection Support.
> We introduced 2 ioctls to let user application to set/get subpage write protection bitmap per gfn, each gfn corresponds to a bitmap.
> The user application, qemu, or some other security control daemon. will set the protection bitmap via this ioctl.
> the API defined as:
> struct kvm_subpage {
> __u64 base_gfn;
> __u64 npages;
> /* sub-page write-access bitmap array */
> __u32 access_map[SUBPAGE_MAX_BITMAP];
> }sp;
> kvm_vm_ioctl(s, KVM_SUBPAGES_SET_ACCESS, &sp)
> kvm_vm_ioctl(s, KVM_SUBPAGES_GET_ACCESS, &sp)

What is the use case for this feature?

\
 
 \ /
  Last update: 2017-10-22 17:09    [W:0.280 / U:0.600 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site