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KVM: VMX: Do not account for temporary memory allocation in ECREATE emulation

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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>
Link: https://lore.kernel.org/r/20240715101224.90958-1-kai.huang@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Kai Huang 2024-07-15 22:12:24 +12:00 committed by Sean Christopherson
parent caf22c6dd3
commit d9aa56edad
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/vmx/sgx.c
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@ -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;