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ArmVirtPkg/HighMemDxe: use CPU arch protocol to apply memprotect policy

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Instead of invoking gDS->SetMemorySpaceAttributes to set the EFI_MEMORY_XP
attribute on newly added regions, which is guaranteed to fail if the same
attribute was not declared as a capability of the region when it as added,
invoke the CPU arch protocol directly to set the EFI_MEMORY_XP attribute
if our memory protection policy demands it.

Reported-by: Michael Zimmermann <sigmaepsilon92@gmail.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Ard Biesheuvel
2017-03-21 08:47:23 +00:00
parent 09da110819
commit 60bd1e1269
2 changed files with 25 additions and 7 deletions
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ArmVirtPkg/HighMemDxe/HighMemDxe.inf
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@@ -41,6 +41,7 @@
UefiDriverEntryPoint
[Protocols]
gEfiCpuArchProtocolGuid ## CONSUMES
gFdtClientProtocolGuid ## CONSUMES
[Pcd]