Re: [PATCH 6.18.y] KVM: TDX: Account all non-transient page allocations for per-TD structures

[Sean Christopherson <seanjc@google.com>]

On Mon, Jul 20, 2026, Binbin Wu wrote:
> From: Sean Christopherson <seanjc@google.com>
> 
> [ Upstream commit a8b2924676ec42d76597f849baba31acc3ba1bfc ]
> 
> Account all non-transient allocations associated with a single TD (or its
> vCPUs), as KVM's ABI is that allocations that are active for the lifetime
> of a VM are accounted.  Leave temporary allocations, i.e. allocations that
> are freed within a single function/ioctl, unaccounted, to again align with
> KVM's existing behavior, e.g. see commit dd103407ca31 ("KVM: X86: Remove
> unnecessary GFP_KERNEL_ACCOUNT for temporary variables").
> 
> Fixes: 8d032b683c29 ("KVM: TDX: create/destroy VM structure")
> Fixes: a50f673f25e0 ("KVM: TDX: Do TDX specific vcpu initialization")
> Cc: stable@vger.kernel.org
> Reviewed-by: Kai Huang <kai.huang@intel.com>
> Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
> Link: https://patch.msgid.link/20260129011517.3545883-4-seanjc@google.com
> Signed-off-by: Sean Christopherson <seanjc@google.com>
> [ Binbin: Resolved conflicts in __tdx_td_init() due to lacking commits
>   eac90a5ba0aa and 69050f8d6d07, retain nr_configured_hkid increment and
>   kcalloc() call. ]
> Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com>
> ---

Acked-by: Sean Christopherson <seanjc@google.com>