Re: [PATCH v6 05/11] x86/virt/tdx: Handle concurrent callers in tdx_pamt_get/put()

[Chao Gao]

>@@ -2057,10 +2061,26 @@ static int tdx_pamt_get(kvm_pfn_t pfn)
> 	if (ret)
> 		return ret;
> 
>-	tdx_status = tdh_phymem_pamt_add(pfn, pamt_pages);
>-	if (tdx_status != TDX_SUCCESS) {
>-		ret = -EIO;
>-		goto out_free;
>+	pamt_refcount = tdx_find_pamt_refcount(pfn);
>+
>+	scoped_guard(spinlock, &pamt_lock) {

I am assuming you will convert this to plain lock/unlock as discussed.

With this fixed,

Reviewed-by: Chao Gao <chao.gao@xxxxxxxxx>