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From: "Zeng, Star" <star.zeng@intel.com>
To: "Ni, Ruiyu" <ruiyu.ni@intel.com>,
	"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Cc: "Wang, Jian J" <jian.j.wang@intel.com>,
	"Zeng, Star" <star.zeng@intel.com>
Subject: Re: [PATCH] IntelFrameworkModulePkg/Csm: Set CSM memory executable
Date: Mon, 6 Aug 2018 10:20:57 +0000	[thread overview]
Message-ID: <0C09AFA07DD0434D9E2A0C6AEB0483103BB8D348@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <20180806095659.250456-1-ruiyu.ni@intel.com>

Cc Jian.

Thanks,
Star

-----Original Message-----
From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Ruiyu Ni
Sent: Monday, August 6, 2018 5:57 PM
To: edk2-devel@lists.01.org
Cc: Zeng, Star <star.zeng@intel.com>
Subject: [edk2] [PATCH] IntelFrameworkModulePkg/Csm: Set CSM memory executable

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

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  reply	other threads:[~2018-08-06 10:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-06  9:56 [PATCH] IntelFrameworkModulePkg/Csm: Set CSM memory executable Ruiyu Ni
2018-08-06 10:20 ` Zeng, Star [this message]
2018-08-06 12:53   ` Laszlo Ersek

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