mirrors/Astral
1
0
Fork 0
mirror of https://github.com/Mathewnd/Astral.git synced 2026-10-30 22:18:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

mmu: enable global pages

Browse Source
This commit is contained in:
Matheus
2025-09-07 00:05:36 -03:00
parent afd5976a1e
commit accad4d70a
4 changed files with 44 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel-src/mm/vmm.c
+10 -4
View File
@@ -505,6 +505,9 @@ int vmm_changemmuflags(void *base, size_t size, mmuflags_t mmuflags, int flags)
if (space == NULL)
return ENOMEM;
if (space == &kernelspace)
mmuflags |= ARCH_MMU_FLAGS_GLOBAL;
MUTEX_ACQUIRE(&space->lock);
int error = changemap(space, base, size, false, flags, mmuflags);
@@ -699,6 +702,9 @@ void *vmm_map(void *addr, volatile size_t size, int flags, mmuflags_t mmuflags,
if (space == NULL)
return NULL;
if (space == &kernelspace)
mmuflags |= ARCH_MMU_FLAGS_GLOBAL;
MUTEX_ACQUIRE(&space->lock);
vmmrange_t *range = NULL;
@@ -947,14 +953,14 @@ void vmm_init() {
if (e->type != LIMINE_MEMMAP_USABLE && e->type != LIMINE_MEMMAP_BOOTLOADER_RECLAIMABLE && e->type != LIMINE_MEMMAP_KERNEL_AND_MODULES && e->type != LIMINE_MEMMAP_FRAMEBUFFER)
continue;
mmuflags_t mmuflags = ARCH_MMU_FLAGS_READ | ARCH_MMU_FLAGS_WRITE | ARCH_MMU_FLAGS_NOEXEC;
mmuflags_t mmuflags = ARCH_MMU_FLAGS_READ | ARCH_MMU_FLAGS_WRITE | ARCH_MMU_FLAGS_NOEXEC | ARCH_MMU_FLAGS_GLOBAL;
__assert(vmm_map(MAKE_HHDM(e->base), e->length, VMM_FLAGS_EXACT, mmuflags, NULL));
}
// map kernel
__assert(vmm_map(&_text_start, (uintptr_t)&_text_end - (uintptr_t)&_text_start, VMM_FLAGS_EXACT, ARCH_MMU_FLAGS_READ, NULL));
__assert(vmm_map(&_rodata_start, (uintptr_t)&_rodata_end - (uintptr_t)&_rodata_start, VMM_FLAGS_EXACT, ARCH_MMU_FLAGS_READ | ARCH_MMU_FLAGS_NOEXEC, NULL));
__assert(vmm_map(&_data_start, (uintptr_t)&_data_end - (uintptr_t)&_data_start, VMM_FLAGS_EXACT, ARCH_MMU_FLAGS_READ | ARCH_MMU_FLAGS_WRITE | ARCH_MMU_FLAGS_NOEXEC, NULL));
__assert(vmm_map(&_text_start, (uintptr_t)&_text_end - (uintptr_t)&_text_start, VMM_FLAGS_EXACT, ARCH_MMU_FLAGS_READ | ARCH_MMU_FLAGS_GLOBAL, NULL));
__assert(vmm_map(&_rodata_start, (uintptr_t)&_rodata_end - (uintptr_t)&_rodata_start, VMM_FLAGS_EXACT, ARCH_MMU_FLAGS_READ | ARCH_MMU_FLAGS_NOEXEC | ARCH_MMU_FLAGS_GLOBAL, NULL));
__assert(vmm_map(&_data_start, (uintptr_t)&_data_end - (uintptr_t)&_data_start, VMM_FLAGS_EXACT, ARCH_MMU_FLAGS_READ | ARCH_MMU_FLAGS_WRITE | ARCH_MMU_FLAGS_NOEXEC | ARCH_MMU_FLAGS_GLOBAL, NULL));
// null page
vmm_map(MAKE_HHDM(NULL), PAGE_SIZE, VMM_FLAGS_EXACT, ARCH_MMU_FLAGS_NOEXEC, NULL);