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From: Anish Ghulati <aghulati@google.com>
To: Sean Christopherson <seanjc@google.com>,
	Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, Anish Ghulati <aghulati@google.com>,
	Mingwei Zhang <mizhang@google.com>
Subject: [PATCH] KVM: SVM: Account scratch allocations used to decrypt SEV guest memory
Date: Fri, 13 Jan 2023 22:09:23 +0000	[thread overview]
Message-ID: <20230113220923.2834699-1-aghulati@google.com> (raw)

Account the temp/scratch allocation used to decrypt unaligned debug
accesses to SEV guest memory, the allocation is very much tied to the
target VM.

Reported-by: Mingwei Zhang <mizhang@google.com>
Signed-off-by: Anish Ghulati <aghulati@google.com>
---
 arch/x86/kvm/svm/sev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 273cba809328..a5e4c5ef7c9e 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -813,7 +813,7 @@ static int __sev_dbg_decrypt_user(struct kvm *kvm, unsigned long paddr,
 	if (!IS_ALIGNED(dst_paddr, 16) ||
 	    !IS_ALIGNED(paddr,     16) ||
 	    !IS_ALIGNED(size,      16)) {
-		tpage = (void *)alloc_page(GFP_KERNEL | __GFP_ZERO);
+		tpage = (void *)alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO);
 		if (!tpage)
 			return -ENOMEM;
 
-- 
2.39.0.314.g84b9a713c41-goog


             reply	other threads:[~2023-01-13 22:09 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-13 22:09 Anish Ghulati [this message]
2023-01-19 21:03 ` [PATCH] KVM: SVM: Account scratch allocations used to decrypt SEV guest memory Sean Christopherson

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