shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 19:30:30 +09:00
Code Issues Packages Projects Releases Wiki Activity

ANDROID: KVM: arm64: memory balloon: Notify hyp when ballooning

Browse Source 
When running as a protected VM, the hypervisor isolates the VM's
memory pages from the host. Returning ownership of a VM page
therefore requires hypervisor involvement, and acknowledgement from
the protected VM that it is voluntarily cooperating.

To this end, notify pages via the new relinquish hypercall when they
are entered into the memory balloon.

Bug: 240239989
Change-Id: Ic89b45312a7478ddff081a934d99e693eded92dc
Signed-off-by: Keir Fraser <keirf@google.com>
This commit is contained in:
Keir Fraser
2022-11-09 13:53:28 +00:00
parent 916db397d1
commit 0859c4b2cb
1 changed files with 3 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/linux/balloon_compaction.h
View File

@@ -43,6 +43,7 @@
#include <linux/err.h>
#include <linux/fs.h>
#include <linux/list.h>
#include <linux/mem_relinquish.h>
/*
* Balloon device information descriptor.
@@ -103,6 +104,7 @@ static inline void balloon_page_insert(struct balloon_dev_info *balloon,
__SetPageMovable(page, balloon->inode->i_mapping);
set_page_private(page, (unsigned long)balloon);
list_add(&page->lru, &balloon->pages);
page_relinquish(page);
}
/*
@@ -147,6 +149,7 @@ static inline void balloon_page_insert(struct balloon_dev_info *balloon,
{
__SetPageOffline(page);
list_add(&page->lru, &balloon->pages);
page_relinquish(page);
}
static inline void balloon_page_delete(struct page *page)