diff --git a/arch/x86/include/asm/sev-common.h b/arch/x86/include/asm/sev-common.h
index 0759af9b1acfc..b463fcbd4b907 100644
--- a/arch/x86/include/asm/sev-common.h
+++ b/arch/x86/include/asm/sev-common.h
@@ -106,8 +106,13 @@ enum psc_op {
 #define GHCB_HV_FT_SNP			BIT_ULL(0)
 #define GHCB_HV_FT_SNP_AP_CREATION	BIT_ULL(1)
 
-/* SNP Page State Change NAE event */
-#define VMGEXIT_PSC_MAX_ENTRY		253
+/*
+ * SNP Page State Change NAE event
+ *   The VMGEXIT_PSC_MAX_ENTRY determines the size of the PSC structure, which
+ *   is a local stack variable in set_pages_state(). Do not increase this value
+ *   without evaluating the impact to stack usage.
+ */
+#define VMGEXIT_PSC_MAX_ENTRY		64
 
 struct psc_hdr {
 	u16 cur_entry;
diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c
index 108bbae59c35a..7b0144acd7bfb 100644
--- a/arch/x86/kernel/sev.c
+++ b/arch/x86/kernel/sev.c
@@ -882,11 +882,7 @@ static void __set_pages_state(struct snp_psc_desc *data, unsigned long vaddr,
 static void set_pages_state(unsigned long vaddr, unsigned long npages, int op)
 {
 	unsigned long vaddr_end, next_vaddr;
-	struct snp_psc_desc *desc;
-
-	desc = kmalloc(sizeof(*desc), GFP_KERNEL_ACCOUNT);
-	if (!desc)
-		panic("SNP: failed to allocate memory for PSC descriptor\n");
+	struct snp_psc_desc desc;
 
 	vaddr = vaddr & PAGE_MASK;
 	vaddr_end = vaddr + (npages << PAGE_SHIFT);
@@ -896,12 +892,10 @@ static void set_pages_state(unsigned long vaddr, unsigned long npages, int op)
 		next_vaddr = min_t(unsigned long, vaddr_end,
 				   (VMGEXIT_PSC_MAX_ENTRY * PAGE_SIZE) + vaddr);
 
-		__set_pages_state(desc, vaddr, next_vaddr, op);
+		__set_pages_state(&desc, vaddr, next_vaddr, op);
 
 		vaddr = next_vaddr;
 	}
-
-	kfree(desc);
 }
 
 void snp_set_memory_shared(unsigned long vaddr, unsigned long npages)