efi_mem_reserve cares only about boot services regions, for making sure
later efi_free_boot_services does not free areas which are still useful,
such as bgrt image buffer.
So add a new argument to efi_memmap_insert for this purpose.
Signed-off-by: Dave Young <dyoung@xxxxxxxxxx>
---
v1->v2: only check EFI_BOOT_SERVICES_CODE/_DATA
arch/x86/platform/efi/quirks.c | 2 +-
drivers/firmware/efi/fake_mem.c | 3 ++-
drivers/firmware/efi/memmap.c | 6 +++++-
include/linux/efi.h | 4 ++--
4 files changed, 10 insertions(+), 5 deletions(-)
--- linux-x86.orig/drivers/firmware/efi/memmap.c
+++ linux-x86/drivers/firmware/efi/memmap.c
@@ -229,7 +229,7 @@ int __init efi_memmap_split_count(efi_me
* to see how large @buf needs to be.
*/
void __init efi_memmap_insert(struct efi_memory_map *old_memmap, void *buf,
- struct efi_mem_range *mem)
+ struct efi_mem_range *mem, bool boot_only)
{
u64 m_start, m_end, m_attr;
efi_memory_desc_t *md;
@@ -262,6 +262,10 @@ void __init efi_memmap_insert(struct efi
start = md->phys_addr;
end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) - 1;
+ if (boot_only && !(md->type == EFI_BOOT_SERVICES_CODE ||
+ md->type == EFI_BOOT_SERVICES_DATA))
+ continue;
+
if (m_start <= start && end <= m_end)
md->attribute |= m_attr;
--- linux-x86.orig/arch/x86/platform/efi/quirks.c
+++ linux-x86/arch/x86/platform/efi/quirks.c
@@ -226,7 +226,7 @@ void __init efi_arch_mem_reserve(phys_ad
return;
}
- efi_memmap_insert(&efi.memmap, new, &mr);
+ efi_memmap_insert(&efi.memmap, new, &mr, true);
early_memunmap(new, new_size);
efi_memmap_install(new_phys, num_entries);
--- linux-x86.orig/drivers/firmware/efi/fake_mem.c
+++ linux-x86/drivers/firmware/efi/fake_mem.c
@@ -85,7 +85,8 @@ void __init efi_fake_memmap(void)
}
for (i = 0; i < nr_fake_mem; i++)
- efi_memmap_insert(&efi.memmap, new_memmap, &fake_mems[i]);
+ efi_memmap_insert(&efi.memmap, new_memmap, &fake_mems[i],
+ false);
/* swap into new EFI memmap */
early_memunmap(new_memmap, efi.memmap.desc_size * new_nr_map);
--- linux-x86.orig/include/linux/efi.h
+++ linux-x86/include/linux/efi.h
@@ -959,8 +959,8 @@ extern int __init efi_memmap_install(phy
extern int __init efi_memmap_split_count(efi_memory_desc_t *md,
struct range *range);
extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap,
- void *buf, struct efi_mem_range *mem);
-
+ void *buf, struct efi_mem_range *mem,
+ bool boot_only);
extern int efi_config_init(efi_config_table_type_t *arch_tables);
#ifdef CONFIG_EFI_ESRT
extern void __init efi_esrt_init(void);
--
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