xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: PPC: Book3S HV: Outline of KVM-HV HPT resizing implementation

Browse Source 
This adds a not yet working outline of the HPT resizing PAPR
extension.  Specifically it adds the necessary ioctl() functions,
their basic steps, the work function which will handle preparation for
the resize, and synchronization between these, the guest page fault
path and guest HPT update path.

The actual guts of the implementation isn't here yet, so for now the
calls will always fail.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
David Gibson
2016-12-20 16:49:05 +11:00
committed by Paul Mackerras
parent 639e459768
commit 5e9859699a
4 changed files with 223 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/powerpc/include/asm/kvm_host.h
View File

@@ -252,6 +252,8 @@ struct kvm_hpt_info {
int cma;
};
struct kvm_resize_hpt;
struct kvm_arch {
unsigned int lpid;
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
@@ -276,6 +278,7 @@ struct kvm_arch {
u64 process_table;
struct dentry *debugfs_dir;
struct dentry *htab_dentry;
struct kvm_resize_hpt *resize_hpt; /* protected by kvm->lock */
#endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
#ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
struct mutex hpt_mutex;