From: Ruiyu Ni <ruiyu.ni@intel.com>
To: edk2-devel@lists.01.org
Cc: Star Zeng <star.zeng@intel.com>
Subject: [PATCH] IntelFrameworkModulePkg/Csm: Set CSM memory executable
Date: Mon, 6 Aug 2018 17:56:59 +0800 [thread overview]
Message-ID: <20180806095659.250456-1-ruiyu.ni@intel.com> (raw)
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
---
.../Csm/LegacyBiosDxe/LegacyBios.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBios.c b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBios.c
index 8f14687b28..f86d00b53f 100644
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBios.c
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBios.c
@@ -64,8 +64,9 @@ AllocateLegacyMemory (
OUT EFI_PHYSICAL_ADDRESS *Result
)
{
- EFI_STATUS Status;
- EFI_PHYSICAL_ADDRESS MemPage;
+ EFI_STATUS Status;
+ EFI_PHYSICAL_ADDRESS MemPage;
+ EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;
//
// Allocate Pages of memory less <= StartPageAddress
@@ -83,10 +84,21 @@ AllocateLegacyMemory (
//
if (!EFI_ERROR (Status)) {
*Result = (EFI_PHYSICAL_ADDRESS) (UINTN) MemPage;
+ if (MemoryType != EfiBootServicesCode) {
+ //
+ // Make sure that the buffer can be used to store code.
+ //
+ Status = gDS->GetMemorySpaceDescriptor (MemPage, &MemDesc);
+ if (!EFI_ERROR (Status) && (MemDesc.Attributes & EFI_MEMORY_XP) != 0) {
+ Status = gDS->SetMemorySpaceAttributes (
+ MemPage,
+ EFI_PAGES_TO_SIZE (Pages),
+ MemDesc.Attributes & (~EFI_MEMORY_XP)
+ );
+ }
+ }
}
- //
- // If reach here the status = EFI_SUCCESS
- //
+
return Status;
}
--
2.16.1.windows.1
next reply other threads:[~2018-08-06 9:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-06 9:56 Ruiyu Ni [this message]
2018-08-06 10:20 ` [PATCH] IntelFrameworkModulePkg/Csm: Set CSM memory executable Zeng, Star
2018-08-06 12:53 ` Laszlo Ersek
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