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efi_loader: TPL_HIGH_LEVEL not allowed for CreateEvent 

According to chapter 7.1 "Event, Timer, and Task Priority Services"
TPL_HIGH_LEVEL should not be exposed to applications and drivers.

According to the discussion with EDK II contributors this implies that
CreateEvent() shall not allow to create events with TPL_HIGH_LEVEL.

Cc: Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com>
This commit is contained in:
Heinrich Schuchardt 2021-06-10 23:10:52 +02:00
parent 4d8c21da41
commit 7891fe675d
2 changed files with 1 additions and 2 deletions
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1
lib/efi_loader/efi_boottime.c
View File

@ -264,7 +264,6 @@ efi_status_t is_valid_tpl(efi_uintn_t tpl)
case TPL_APPLICATION:
case TPL_CALLBACK:
case TPL_NOTIFY:
case TPL_HIGH_LEVEL:
return EFI_SUCCESS;
default:
return EFI_INVALID_PARAMETER;

2
lib/efi_selftest/efi_selftest_tpl.c
View File

@ -55,7 +55,7 @@ static int setup(const efi_handle_t handle,
return EFI_ST_FAILURE;
}
ret = boottime->create_event(EVT_TIMER | EVT_NOTIFY_WAIT,
TPL_HIGH_LEVEL, notify, NULL, &event_wait);
TPL_NOTIFY, notify, NULL, &event_wait);
if (ret != EFI_SUCCESS) {
efi_st_error("could not create event\n");
return EFI_ST_FAILURE;