From 85070fbba0e923ecec98b612d6bf906cb17fb0e8 Mon Sep 17 00:00:00 2001
From: Mikhail Krichanov <mikhailkrichanov@gmail.com>
Date: Thu, 5 Dec 2024 12:35:16 +0300
Subject: [PATCH] CpuArchLib: Specified IdtTable size precisely.

---
 UefiCpuPkg/Library/CpuArchLib/CpuDxe.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/UefiCpuPkg/Library/CpuArchLib/CpuDxe.c b/UefiCpuPkg/Library/CpuArchLib/CpuDxe.c
index fac32d4381..bd8a9e31ec 100644
--- a/UefiCpuPkg/Library/CpuArchLib/CpuDxe.c
+++ b/UefiCpuPkg/Library/CpuArchLib/CpuDxe.c
@@ -728,9 +728,9 @@ InitInterruptDescriptorTable (
     //
     // Increase Interrupt Descriptor Table and Copy the old IDT table in
     //
-    IdtTable = AllocatePages (1);
+    IdtTable = AllocatePages (EFI_SIZE_TO_PAGES (sizeof (IA32_IDT_GATE_DESCRIPTOR) * CPU_INTERRUPT_NUM));
     ASSERT (IdtTable != NULL);
-    SetMem (IdtTable, EFI_PAGE_SIZE, 0);
+    SetMem (IdtTable, sizeof (IA32_IDT_GATE_DESCRIPTOR) * CPU_INTERRUPT_NUM, 0);
     CopyMem (IdtTable, (VOID *)IdtDescriptor.Base, sizeof (IA32_IDT_GATE_DESCRIPTOR) * IdtEntryCount);
 
     //