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efi: libstub: Drop handling of EFI properties table 

The EFI properties table was a short lived experiment that never saw the
light of day on non-x86 (if at all) so let's drop the handling of it.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Ard Biesheuvel 2022-10-11 10:25:36 +02:00
parent 085e2ff9ae
commit 48b9491cfe
1 changed files with 0 additions and 13 deletions
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13
drivers/firmware/efi/libstub/efi-stub.c
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@ -126,7 +126,6 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
unsigned long reserve_addr = 0;
unsigned long reserve_size = 0;
struct screen_info *si;
efi_properties_table_t *prop_tbl;
efi_system_table = sys_table_arg;
@ -205,18 +204,6 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
efi_random_get_seed();
/*
* If the NX PE data feature is enabled in the properties table, we
* should take care not to create a virtual mapping that changes the
* relative placement of runtime services code and data regions, as
* they may belong to the same PE/COFF executable image in memory.
* The easiest way to achieve that is to simply use a 1:1 mapping.
*/
prop_tbl = get_efi_config_table(EFI_PROPERTIES_TABLE_GUID);
flat_va_mapping |= prop_tbl &&
(prop_tbl->memory_protection_attribute &
EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA);
/* force efi_novamap if SetVirtualAddressMap() is unsupported */
efi_novamap |= !(get_supported_rt_services() &
EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP);