diff options
Diffstat (limited to 'drivers/firmware/efi/libstub/x86-stub.c')
-rw-r--r-- | drivers/firmware/efi/libstub/x86-stub.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c index dd80082aa..19b51dc34 100644 --- a/drivers/firmware/efi/libstub/x86-stub.c +++ b/drivers/firmware/efi/libstub/x86-stub.c @@ -238,6 +238,15 @@ efi_status_t efi_adjust_memory_range_protection(unsigned long start, rounded_end = roundup(start + size, EFI_PAGE_SIZE); if (memattr != NULL) { + status = efi_call_proto(memattr, set_memory_attributes, + rounded_start, + rounded_end - rounded_start, + EFI_MEMORY_RO); + if (status != EFI_SUCCESS) { + efi_warn("Failed to set EFI_MEMORY_RO attribute\n"); + return status; + } + status = efi_call_proto(memattr, clear_memory_attributes, rounded_start, rounded_end - rounded_start, @@ -818,7 +827,7 @@ static efi_status_t efi_decompress_kernel(unsigned long *kernel_entry) *kernel_entry = addr + entry; - return efi_adjust_memory_range_protection(addr, kernel_total_size); + return efi_adjust_memory_range_protection(addr, kernel_text_size); } static void __noreturn enter_kernel(unsigned long kernel_addr, @@ -890,6 +899,9 @@ void __noreturn efi_stub_entry(efi_handle_t handle, } } + if (efi_mem_encrypt > 0) + hdr->xloadflags |= XLF_MEM_ENCRYPTION; + status = efi_decompress_kernel(&kernel_entry); if (status != EFI_SUCCESS) { efi_err("Failed to decompress kernel\n"); |