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

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Message-Id: <20220620124723.078679722@linuxfoundation.org>
Date:   Mon, 20 Jun 2022 14:51:37 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH 5.10 74/84] KVM: x86: Account a variety of miscellaneous allocations

From: Sean Christopherson <seanjc@...gle.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@...gle.com>
Message-Id: <20210331023025.2485960-3-seanjc@...gle.com>
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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;