Sinipelto/banan-os
1
0
Fork 0
forked from Bananymous/banan-os
Code Pull Requests Activity

Kernel: Move USERSPACE_END to lower half

Browse Source 
This allows calculating distance to USERSPACE_END from lower half
address
This commit is contained in:
Bananymous
2026-04-02 16:34:47 +03:00
parent 32806a5af3
commit 9589b5984d
2 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/arch/x86_64/PageTable.cpp
View File

@@ -866,7 +866,7 @@ namespace Kernel
last_address -= rem; last_address -= rem;
ASSERT(is_canonical(first_address)); ASSERT(is_canonical(first_address));
ASSERT(is_canonical(last_address)); ASSERT(is_canonical(last_address - 1));
const vaddr_t uc_vaddr_start = uncanonicalize(first_address); const vaddr_t uc_vaddr_start = uncanonicalize(first_address);
const vaddr_t uc_vaddr_end = uncanonicalize(last_address); const vaddr_t uc_vaddr_end = uncanonicalize(last_address);
@@ -948,7 +948,7 @@ namespace Kernel
last_address -= rem; last_address -= rem;
ASSERT(is_canonical(first_address)); ASSERT(is_canonical(first_address));
ASSERT(is_canonical(last_address)); ASSERT(is_canonical(last_address - 1));
SpinLockGuard _(m_lock); SpinLockGuard _(m_lock);

2
kernel/include/kernel/Memory/Types.h
View File

@@ -4,7 +4,7 @@
#if ARCH(x86_64) #if ARCH(x86_64)
#define KERNEL_OFFSET 0xFFFFFFFF80000000 #define KERNEL_OFFSET 0xFFFFFFFF80000000
#define USERSPACE_END 0xFFFF800000000000 #define USERSPACE_END 0x800000000000
#elif ARCH(i686) #elif ARCH(i686)
#define KERNEL_OFFSET 0xC0000000 #define KERNEL_OFFSET 0xC0000000
#define USERSPACE_END 0xC0000000 #define USERSPACE_END 0xC0000000