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pmm: full rewrite

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I've decided to do a rewrite on it due to some plans that would make refcounting physical pages nescessary among other things. now instead of a bitmap it uses a list of pages with each physical page having a page_t associated with it
This commit is contained in:
Matheus
2023-07-29 17:14:41 -03:00
parent 8ca2360991
commit 55fc1b7026
11 changed files with 267 additions and 179 deletions
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kernel-src/arch/x86-64/mmu.c
+8 -8
View File
@@ -68,7 +68,7 @@ static bool add_page(pagetableptr_t top, void *vaddr, uint64_t entry, int depth)
uint64_t *pdpt = next(pml4[pml4offset]);
if (pdpt == NULL) {
pdpt = pmm_alloc(1, PMM_SECTION_DEFAULT);
pdpt = pmm_allocpage(PMM_SECTION_DEFAULT);
if (pdpt == NULL)
return false;
pml4[pml4offset] = (uint64_t)pdpt | INTERMEDIATE_FLAGS;
@@ -83,7 +83,7 @@ static bool add_page(pagetableptr_t top, void *vaddr, uint64_t entry, int depth)
uint64_t *pd = next(pdpt[pdptoffset]);
if (pd == NULL) {
pd = pmm_alloc(1, PMM_SECTION_DEFAULT);
pd = pmm_allocpage(PMM_SECTION_DEFAULT);
if (pd == NULL)
return false;
pdpt[pdptoffset] = (uint64_t)pd | INTERMEDIATE_FLAGS;
@@ -98,7 +98,7 @@ static bool add_page(pagetableptr_t top, void *vaddr, uint64_t entry, int depth)
uint64_t *pt = next(pd[pdoffset]);
if (pt == NULL) {
pt = pmm_alloc(1, PMM_SECTION_DEFAULT);
pt = pmm_allocpage(PMM_SECTION_DEFAULT);
if (pt == NULL)
return false;
pd[pdoffset] = (uint64_t)pt | INTERMEDIATE_FLAGS;
@@ -120,13 +120,13 @@ static void destroy(uint64_t *table, int depth) {
if (depth > 0)
destroy(MAKE_HHDM(addr), depth - 1);
pmm_free(addr, 1);
pmm_release(addr);
}
}
void arch_mmu_destroytable(pagetableptr_t table) {
destroy(MAKE_HHDM(table), 3);
pmm_free(table, 1);
pmm_release(table);
}
bool arch_mmu_map(pagetableptr_t table, void *paddr, void *vaddr, mmuflags_t flags) {
@@ -170,7 +170,7 @@ void arch_mmu_switch(pagetableptr_t table) {
static pagetableptr_t template;
pagetableptr_t arch_mmu_newtable() {
pagetableptr_t table = pmm_alloc(1, PMM_SECTION_DEFAULT);
pagetableptr_t table = pmm_allocpage(PMM_SECTION_DEFAULT);
if (table == NULL)
return NULL;
memcpy(MAKE_HHDM(table), template, PAGE_SIZE);
@@ -227,13 +227,13 @@ static void pfisr(isr_t *self, context_t *ctx) {
}
void arch_mmu_init() {
template = pmm_alloc(1, PMM_SECTION_DEFAULT);
template = pmm_allocpage(PMM_SECTION_DEFAULT);
__assert(template);
template = MAKE_HHDM(template);
memset(template, 0, PAGE_SIZE);
for (int i = 256; i < 512; ++i) {
uint64_t *entry = pmm_alloc(1, PMM_SECTION_DEFAULT);
uint64_t *entry = pmm_allocpage(PMM_SECTION_DEFAULT);
__assert(entry);
memset(MAKE_HHDM(entry), 0, PAGE_SIZE);
template[i] = (uint64_t)entry | INTERMEDIATE_FLAGS;
kernel-src/arch/x86-64/syscalllog.c
+1 -1
View File
@@ -86,7 +86,7 @@ static char *args[] = {
"fds %p nfds %d timeout %d", // poll
"time %p remaining %p", // nanosleep
"fd %d size %lu", // ftruncate
"backing %s mountpoint %s fs %s flags %d data %p" // mount
"backing %p mountpoint %s fs %s flags %d data %p" // mount
};
#endif