| Message ID | 20240715101224.90958-1-kai.huang@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: VMX: Do not account for temporary memory allocation in ECREATE emulation | expand |
On Mon, 15 Jul 2024 22:12:24 +1200, Kai Huang wrote: > In handle_encls_ecreate(), a page is allocated to store a copy of SECS > structure used by the ENCLS[ECREATE] leaf from the guest. This page is > only used temporarily and is freed after use in handle_encls_ecreate(). > > Don't account for the memory allocation of this page per [1]. > > > [...] Applied to kvm-x86 vmx, thanks! [1/1] KVM: VMX: Do not account for temporary memory allocation in ECREATE emulation https://github.com/kvm-x86/linux/commit/d9aa56edad35 -- https://github.com/kvm-x86/linux/tree/next
diff --git a/arch/x86/kvm/vmx/sgx.c b/arch/x86/kvm/vmx/sgx.c index 6fef01e0536e..a3c3d2a51f47 100644 --- a/arch/x86/kvm/vmx/sgx.c +++ b/arch/x86/kvm/vmx/sgx.c @@ -274,7 +274,7 @@ static int handle_encls_ecreate(struct kvm_vcpu *vcpu) * simultaneously set SGX_ATTR_PROVISIONKEY to bypass the check to * enforce restriction of access to the PROVISIONKEY. */ - contents = (struct sgx_secs *)__get_free_page(GFP_KERNEL_ACCOUNT); + contents = (struct sgx_secs *)__get_free_page(GFP_KERNEL); if (!contents) return -ENOMEM;
In handle_encls_ecreate(), a page is allocated to store a copy of SECS structure used by the ENCLS[ECREATE] leaf from the guest. This page is only used temporarily and is freed after use in handle_encls_ecreate(). Don't account for the memory allocation of this page per [1]. Link: https://lore.kernel.org/kvm/b999afeb588eb75d990891855bc6d58861968f23.camel@intel.com/T/#mb81987afc3ab308bbb5861681aa9a20f2aece7fd [1] Signed-off-by: Kai Huang <kai.huang@intel.com> --- arch/x86/kvm/vmx/sgx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) base-commit: c8b8b8190a80b591aa73c27c70a668799f8db547