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Return an integer from __page_handle_cow, allowing the caller to react to an error.

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This commit is contained in:
Enrico Fraccaroli (Galfurian)
2023-08-22 09:24:55 -04:00
parent 08d87ea439
commit a50c1a892f
1 changed files with 4 additions and 3 deletions
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mentos/src/mem/paging.c
+4 -3
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@@ -365,7 +365,7 @@ static void __page_fault_panic(pt_regs *f, uint32_t addr)
__asm__ __volatile__("cli");
}
static void __page_handle_cow(page_table_entry_t *entry)
static int __page_handle_cow(page_table_entry_t *entry)
{
// Check if the page is Copy On Write (COW).
if (entry->kernel_cow) {
@@ -384,10 +384,11 @@ static void __page_handle_cow(page_table_entry_t *entry)
entry->frame = get_physical_address_from_page(page) >> 12U;
// Set it as allocated.
entry->present = 1;
return;
return 0;
}
}
kernel_panic("Page not cow!");
pr_err("Page not cow!\n");
return 1;
}
static page_table_t *__mem_pg_entry_alloc(page_dir_entry_t *entry, uint32_t flags)