redonkable
/
remarkable-linux
1
0
Fork 0
Code Releases Activity

kvm, mm: account kvm related kmem slabs to kmemcg 

[ Upstream commit 46bea48ac2 ]

The kvm slabs can consume a significant amount of system memory
and indeed in our production environment we have observed that
a lot of machines are spending significant amount of memory that
can not be left as system memory overhead. Also the allocations
from these slabs can be triggered directly by user space applications
which has access to kvm and thus a buggy application can leak
such memory. So, these caches should be accounted to kmemcg.

Signed-off-by: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
steinar/wifi_calib_4_9_kernel
Shakeel Butt 2017-10-05 18:07:24 -07:00 committed by Greg Kroah-Hartman
parent bdb33bb5e2
commit 206e1621ba
2 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/kvm/mmu.c
View File

@ -5052,13 +5052,13 @@ int kvm_mmu_module_init(void)
{
pte_list_desc_cache = kmem_cache_create("pte_list_desc",
sizeof(struct pte_list_desc),
0, 0, NULL);
0, SLAB_ACCOUNT, NULL);
if (!pte_list_desc_cache)
goto nomem;
mmu_page_header_cache = kmem_cache_create("kvm_mmu_page_header",
sizeof(struct kvm_mmu_page),
0, 0, NULL);
0, SLAB_ACCOUNT, NULL);
if (!mmu_page_header_cache)
goto nomem;

2
virt/kvm/kvm_main.c
View File

@ -3904,7 +3904,7 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
if (!vcpu_align)
vcpu_align = __alignof__(struct kvm_vcpu);
kvm_vcpu_cache = kmem_cache_create("kvm_vcpu", vcpu_size, vcpu_align,
0, NULL);
SLAB_ACCOUNT, NULL);
if (!kvm_vcpu_cache) {
r = -ENOMEM;
goto out_free_3;