Reviewed-by: Star Zeng <[email protected]>
Thanks, Star -----Original Message----- From: Brijesh Singh [mailto:[email protected]] Sent: Wednesday, July 4, 2018 10:02 AM To: [email protected] Cc: Tom Lendacky <[email protected]>; Brijesh Singh <[email protected]>; Dong, Eric <[email protected]>; Justen, Jordan L <[email protected]>; Zeng, Star <[email protected]>; Laszlo Ersek <[email protected]> Subject: [PATCH v2 1/1] MdeModulePkg/Variable: Check EFI_MEMORY_RUNTIME attribute before setting it Set the EFI_MEMORY_RUNTIME attribute in FtwNotificationEvent() only if the attribute is not already present. This will ensure that the attributes set by the platform drivers (e.g Ovmf pflash) is not lost. Cc: Dong Eric <[email protected]> Cc: Justen Jordan L <[email protected]> Cc: Zeng Star <[email protected]> Cc: Laszlo Ersek <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.1 Reviewed-by: Star Zeng <[email protected]> Signed-off-by: Brijesh Singh <[email protected]> --- Change since v1: - fix coding style MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c index 6b04f4f7b394..23186176be75 100644 --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c @@ -412,13 +412,15 @@ FtwNotificationEvent ( if (EFI_ERROR (Status)) { DEBUG ((DEBUG_WARN, "Variable driver failed to get flash memory attribute.\n")); } else { - Status = gDS->SetMemorySpaceAttributes ( - BaseAddress, - Length, - GcdDescriptor.Attributes | EFI_MEMORY_RUNTIME - ); - if (EFI_ERROR (Status)) { - DEBUG ((DEBUG_WARN, "Variable driver failed to add EFI_MEMORY_RUNTIME attribute to Flash.\n")); + if ((GcdDescriptor.Attributes & EFI_MEMORY_RUNTIME) == 0) { + Status = gDS->SetMemorySpaceAttributes ( + BaseAddress, + Length, + GcdDescriptor.Attributes | EFI_MEMORY_RUNTIME + ); + if (EFI_ERROR (Status)) { + DEBUG ((DEBUG_WARN, "Variable driver failed to add EFI_MEMORY_RUNTIME attribute to Flash.\n")); + } } } -- 2.7.4 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
