[PATCH 5.10 74/84] KVM: x86: Account a variety of miscellaneous allocations

Greg Kroah-Hartman
2022-06-20T13:51:09Z

From: Sean Christopherson <seanjc@google.com>

commit eba04b20e4861d9bdbd8470a13c0c6e824521a36 upstream.

Switch to GFP_KERNEL_ACCOUNT for a handful of allocations that are
clearly associated with a single task/VM.

Note, there are a several SEV allocations that aren't accounted, but
those can (hopefully) be fixed by using the local stack for memory.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210331023025.2485960-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/svm/nested.c | 4 ++--
arch/x86/kvm/svm/sev.c | 2 +-
arch/x86/kvm/vmx/vmx.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)

--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -1198,8 +1198,8 @@ static int svm_set_nested_state(struct k
return -EINVAL;

ret = -ENOMEM;
- ctl = kzalloc(sizeof(*ctl), GFP_KERNEL);
- save = kzalloc(sizeof(*save), GFP_KERNEL);
+ ctl = kzalloc(sizeof(*ctl), GFP_KERNEL_ACCOUNT);
+ save = kzalloc(sizeof(*save), GFP_KERNEL_ACCOUNT);
if (!ctl || !save)
goto out_free;

--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -537,7 +537,7 @@ static int sev_launch_measure(struct kvm
}

ret = -ENOMEM;
- blob = kmalloc(params.len, GFP_KERNEL);
+ blob = kmalloc(params.len, GFP_KERNEL_ACCOUNT);
if (!blob)
goto e_free;

--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -619,7 +619,7 @@ static int hv_enable_direct_tlbflush(str
* evmcs in singe VM shares same assist page.
*/
if (!*p_hv_pa_pg)
- *p_hv_pa_pg = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ *p_hv_pa_pg = kzalloc(PAGE_SIZE, GFP_KERNEL_ACCOUNT);

if (!*p_hv_pa_pg)
return -ENOMEM;