From f4e2e62d04c54e58140b4a0ca23efa6a40bfc2bf Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Sun, 3 May 2026 01:20:10 +0300
Subject: [PATCH] Kernel: Remove kmalloc API for identity mapped results

This is no longer used. This finally allows me to rewrite kmalloc :^)
---
 kernel/include/kernel/Memory/kmalloc.h |  7 +-----
 kernel/kernel/Memory/kmalloc.cpp       | 34 +++-----------------------
 2 files changed, 4 insertions(+), 37 deletions(-)

diff --git a/kernel/include/kernel/Memory/kmalloc.h b/kernel/include/kernel/Memory/kmalloc.h
index 2f330a2d..16cf3ac2 100644
--- a/kernel/include/kernel/Memory/kmalloc.h
+++ b/kernel/include/kernel/Memory/kmalloc.h
@@ -1,15 +1,10 @@
 #pragma once
 
-#include <BAN/Optional.h>
-#include <kernel/Memory/Types.h>
-
 #include <stddef.h>
 
 void kmalloc_initialize();
 void kmalloc_dump_info();
 
 void* kmalloc(size_t size);
-void* kmalloc(size_t size, size_t align, bool force_identity_map = false);
+void* kmalloc(size_t size, size_t align);
 void kfree(void*);
-
-BAN::Optional<Kernel::paddr_t> kmalloc_paddr_of(Kernel::vaddr_t);
diff --git a/kernel/kernel/Memory/kmalloc.cpp b/kernel/kernel/Memory/kmalloc.cpp
index aadb4048..fecf7055 100644
--- a/kernel/kernel/Memory/kmalloc.cpp
+++ b/kernel/kernel/Memory/kmalloc.cpp
@@ -303,27 +303,17 @@ static void* kmalloc_impl(size_t size, size_t align)
 
 void* kmalloc(size_t size)
 {
-	return kmalloc(size, s_kmalloc_min_align, false);
+	return kmalloc(size, s_kmalloc_min_align);
 }
 
-static constexpr bool is_power_of_two(size_t value)
+void* kmalloc(size_t size, size_t align)
 {
-	if (value == 0)
-		return false;
-	return (value & (value - 1)) == 0;
-}
-
-void* kmalloc(size_t size, size_t align, bool force_identity_map)
-{
-	// currently kmalloc is always identity mapped
-	(void)force_identity_map;
-
 	if (size == 0)
 		size = 1;
 
 	const kmalloc_info& info = s_kmalloc_info;
 
-	ASSERT(is_power_of_two(align));
+	ASSERT(BAN::Math::is_power_of_two(align));
 	if (align < s_kmalloc_min_align)
 		align = s_kmalloc_min_align;
 	ASSERT(align <= PAGE_SIZE);
@@ -418,21 +408,3 @@ void kfree(void* address)
 	}
 
 }
-
-static bool is_kmalloc_vaddr(Kernel::vaddr_t vaddr)
-{
-	using namespace Kernel;
-	if (vaddr < reinterpret_cast<vaddr_t>(s_kmalloc_storage))
-		return false;
-	if (vaddr >= reinterpret_cast<vaddr_t>(s_kmalloc_storage) + sizeof(s_kmalloc_storage))
-		return false;
-	return true;
-}
-
-BAN::Optional<Kernel::paddr_t> kmalloc_paddr_of(Kernel::vaddr_t vaddr)
-{
-	using namespace Kernel;
-	if (!is_kmalloc_vaddr(vaddr))
-		return {};
-	return vaddr - KERNEL_OFFSET + g_boot_info.kernel_paddr;
-}