KVM: x86/svm: add __GFP_ACCOUNT to __sev_dbg_{en,de}crypt_user()

BugLink: https://bugs.launchpad.net/bugs/1989221
[ Upstream commit ebdec859faa8cfbfef9f6c1f83d79dd6c8f4ab8c ]

Adding the accounting flag when allocating pages within the SEV function,
since these memory pages should belong to individual VM.

No functional change intended.

Signed-off-by: Mingwei Zhang <mizhang@google.com>
Message-Id: <20220623171858.2083637-1-mizhang@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 1e1f7f876e2e26b4a016a00ca80459b8fc4a15c5..33b8f350601ef6ab974ef069b5db370d3776c5d4 100644 (file)
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -832,7 +832,7 @@ static int __sev_dbg_encrypt_user(struct kvm *kvm, unsigned long paddr,
 
        /* If source buffer is not aligned then use an intermediate buffer */
        if (!IS_ALIGNED((unsigned long)vaddr, 16)) {
-               src_tpage = alloc_page(GFP_KERNEL);
+               src_tpage = alloc_page(GFP_KERNEL_ACCOUNT);
                if (!src_tpage)
                        return -ENOMEM;
 
@@ -853,7 +853,7 @@ static int __sev_dbg_encrypt_user(struct kvm *kvm, unsigned long paddr,
        if (!IS_ALIGNED((unsigned long)dst_vaddr, 16) || !IS_ALIGNED(size, 16)) {
                int dst_offset;
 
-               dst_tpage = alloc_page(GFP_KERNEL);
+               dst_tpage = alloc_page(GFP_KERNEL_ACCOUNT);
                if (!dst_tpage) {
                        ret = -ENOMEM;
                        goto e_free;