kernel.
If in doubt, say "N"
+config EFI_PGT_DUMP
+ bool "Dump the EFI pagetable"
+ depends on EFI && X86_PTDUMP
+ ---help---
+ Enable this if you want to dump the EFI page table before
+ enabling virtual mode. This can be used to debug miscellaneous
+ issues with the mapping of the EFI runtime regions into that
+ table.
+
config DEBUG_RODATA
bool "Write protect kernel read-only data structures"
default y
extern void __init old_map_region(efi_memory_desc_t *md);
extern void __init runtime_code_page_mkexec(void);
extern void __init efi_runtime_mkexec(void);
+extern void __init efi_dump_pagetable(void);
struct efi_setup_data {
u64 fw_vendor;
efi_setup_page_tables();
efi_sync_low_kernel_mappings();
+ efi_dump_pagetable();
if (!efi_setup) {
status = phys_efi_set_virtual_address_map(
void efi_sync_low_kernel_mappings(void) {}
void efi_setup_page_tables(void) {}
+void __init efi_dump_pagetable(void) {}
void __init efi_map_region(efi_memory_desc_t *md)
{
if (__supported_pte_mask & _PAGE_NX)
runtime_code_page_mkexec();
}
+
+void __init efi_dump_pagetable(void)
+{
+#ifdef CONFIG_EFI_PGT_DUMP
+ pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd);
+
+ ptdump_walk_pgd_level(NULL, pgd);
+#endif
+}