* [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page setup for APs
@ 2017-12-21 1:27 Jian J Wang
2017-12-22 4:26 ` Wang, Jian J
0 siblings, 1 reply; 4+ messages in thread
From: Jian J Wang @ 2017-12-21 1:27 UTC (permalink / raw)
To: edk2-devel; +Cc: Jiewen Yao, Eric Dong, Laszlo Ersek
AP has its own stack for code execution. If PcdCpuStackGuard is enabled,
the page at the bottom of stack of AP will be disabled (NOT PRESENT) to
monitor the stack overflow issue. This requires PcdCpuApStackSize to be
set with value more than one page of memory.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
---
UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf | 1 +
UefiCpuPkg/Library/MpInitLib/DxeMpLib.c | 34 ++++++++++++++++++++++++---
2 files changed, 32 insertions(+), 3 deletions(-)
diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf b/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
index 805641b516..e7b9eb4462 100644
--- a/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
+++ b/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
@@ -73,4 +73,5 @@
gUefiCpuPkgTokenSpaceGuid.PcdCpuMicrocodePatchRegionSize ## CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdCpuApLoopMode ## CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdCpuApTargetCstate ## SOMETIMES_CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard ## CONSUMES
diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
index 479f8189f6..40c1bf407a 100644
--- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
@@ -17,6 +17,7 @@
#include <Library/UefiLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugAgentLib.h>
+#include <Library/DxeServicesTableLib.h>
#include <Protocol/Timer.h>
@@ -288,9 +289,12 @@ InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData
)
{
- EFI_STATUS Status;
- EFI_PHYSICAL_ADDRESS Address;
- UINTN ApSafeBufferSize;
+ EFI_STATUS Status;
+ EFI_PHYSICAL_ADDRESS Address;
+ UINTN ApSafeBufferSize;
+ UINTN Index;
+ EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;
+ UINTN StackBase;
SaveCpuMpData (CpuMpData);
@@ -301,6 +305,30 @@ InitMpGlobalData (
return;
}
+ if (PcdGetBool (PcdCpuStackGuard)) {
+ //
+ // One extra page at the bottom of the stack is needed for Guard page.
+ //
+ if (CpuMpData->CpuApStackSize <= EFI_PAGE_SIZE) {
+ DEBUG ((DEBUG_ERROR, "PcdCpuApStackSize is not big enough for Stack Guard!\n"));
+ ASSERT (FALSE);
+ }
+
+ for (Index = 0; Index < CpuMpData->CpuCount; ++Index) {
+ StackBase = CpuMpData->Buffer + Index * CpuMpData->CpuApStackSize;
+
+ Status = gDS->GetMemorySpaceDescriptor (StackBase, &MemDesc);
+ ASSERT_EFI_ERROR (Status);
+
+ Status = gDS->SetMemorySpaceAttributes (
+ StackBase,
+ EFI_PAGES_TO_SIZE (1),
+ MemDesc.Attributes | EFI_MEMORY_RP
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
+ }
+
//
// Avoid APs access invalid buffer data which allocated by BootServices,
// so we will allocate reserved data for AP loop code. We also need to
--
2.15.1.windows.2
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page setup for APs
2017-12-21 1:27 [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page setup for APs Jian J Wang
@ 2017-12-22 4:26 ` Wang, Jian J
2017-12-22 5:22 ` Yao, Jiewen
0 siblings, 1 reply; 4+ messages in thread
From: Wang, Jian J @ 2017-12-22 4:26 UTC (permalink / raw)
To: Wang, Jian J, edk2-devel@lists.01.org
Cc: Laszlo Ersek, Yao, Jiewen, Dong, Eric
Hi,
Anyone has any comments on this?
Regards,
Jian
> -----Original Message-----
> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Jian J
> Wang
> Sent: Thursday, December 21, 2017 9:27 AM
> To: edk2-devel@lists.01.org
> Cc: Laszlo Ersek <lersek@redhat.com>; Yao, Jiewen <jiewen.yao@intel.com>;
> Dong, Eric <eric.dong@intel.com>
> Subject: [edk2] [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page setup
> for APs
>
> AP has its own stack for code execution. If PcdCpuStackGuard is enabled,
> the page at the bottom of stack of AP will be disabled (NOT PRESENT) to
> monitor the stack overflow issue. This requires PcdCpuApStackSize to be
> set with value more than one page of memory.
>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Cc: Eric Dong <eric.dong@intel.com>
> Cc: Laszlo Ersek <lersek@redhat.com>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
> ---
> UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf | 1 +
> UefiCpuPkg/Library/MpInitLib/DxeMpLib.c | 34
> ++++++++++++++++++++++++---
> 2 files changed, 32 insertions(+), 3 deletions(-)
>
> diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> b/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> index 805641b516..e7b9eb4462 100644
> --- a/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> +++ b/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> @@ -73,4 +73,5 @@
> gUefiCpuPkgTokenSpaceGuid.PcdCpuMicrocodePatchRegionSize ##
> CONSUMES
> gUefiCpuPkgTokenSpaceGuid.PcdCpuApLoopMode ## CONSUMES
> gUefiCpuPkgTokenSpaceGuid.PcdCpuApTargetCstate ##
> SOMETIMES_CONSUMES
> + gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard ##
> CONSUMES
>
> diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> index 479f8189f6..40c1bf407a 100644
> --- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> +++ b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> @@ -17,6 +17,7 @@
> #include <Library/UefiLib.h>
> #include <Library/UefiBootServicesTableLib.h>
> #include <Library/DebugAgentLib.h>
> +#include <Library/DxeServicesTableLib.h>
>
> #include <Protocol/Timer.h>
>
> @@ -288,9 +289,12 @@ InitMpGlobalData (
> IN CPU_MP_DATA *CpuMpData
> )
> {
> - EFI_STATUS Status;
> - EFI_PHYSICAL_ADDRESS Address;
> - UINTN ApSafeBufferSize;
> + EFI_STATUS Status;
> + EFI_PHYSICAL_ADDRESS Address;
> + UINTN ApSafeBufferSize;
> + UINTN Index;
> + EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;
> + UINTN StackBase;
>
> SaveCpuMpData (CpuMpData);
>
> @@ -301,6 +305,30 @@ InitMpGlobalData (
> return;
> }
>
> + if (PcdGetBool (PcdCpuStackGuard)) {
> + //
> + // One extra page at the bottom of the stack is needed for Guard page.
> + //
> + if (CpuMpData->CpuApStackSize <= EFI_PAGE_SIZE) {
> + DEBUG ((DEBUG_ERROR, "PcdCpuApStackSize is not big enough for Stack
> Guard!\n"));
> + ASSERT (FALSE);
> + }
> +
> + for (Index = 0; Index < CpuMpData->CpuCount; ++Index) {
> + StackBase = CpuMpData->Buffer + Index * CpuMpData->CpuApStackSize;
> +
> + Status = gDS->GetMemorySpaceDescriptor (StackBase, &MemDesc);
> + ASSERT_EFI_ERROR (Status);
> +
> + Status = gDS->SetMemorySpaceAttributes (
> + StackBase,
> + EFI_PAGES_TO_SIZE (1),
> + MemDesc.Attributes | EFI_MEMORY_RP
> + );
> + ASSERT_EFI_ERROR (Status);
> + }
> + }
> +
> //
> // Avoid APs access invalid buffer data which allocated by BootServices,
> // so we will allocate reserved data for AP loop code. We also need to
> --
> 2.15.1.windows.2
>
> _______________________________________________
> edk2-devel mailing list
> edk2-devel@lists.01.org
> https://lists.01.org/mailman/listinfo/edk2-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page setup for APs
2017-12-22 4:26 ` Wang, Jian J
@ 2017-12-22 5:22 ` Yao, Jiewen
2017-12-22 5:35 ` Wang, Jian J
0 siblings, 1 reply; 4+ messages in thread
From: Yao, Jiewen @ 2017-12-22 5:22 UTC (permalink / raw)
To: Wang, Jian J, edk2-devel@lists.01.org; +Cc: Laszlo Ersek, Dong, Eric
I do not think we have AP guard page before, right?
So I suggest we change commit message to be: Add missing Guard page setup for APs.
With commit message update, reviewed-by: Jiewen.yao@intel.com
> -----Original Message-----
> From: Wang, Jian J
> Sent: Friday, December 22, 2017 12:26 PM
> To: Wang, Jian J <jian.j.wang@intel.com>; edk2-devel@lists.01.org
> Cc: Laszlo Ersek <lersek@redhat.com>; Yao, Jiewen <jiewen.yao@intel.com>;
> Dong, Eric <eric.dong@intel.com>
> Subject: RE: [edk2] [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page
> setup for APs
>
> Hi,
>
> Anyone has any comments on this?
>
> Regards,
> Jian
>
>
> > -----Original Message-----
> > From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Jian
> J
> > Wang
> > Sent: Thursday, December 21, 2017 9:27 AM
> > To: edk2-devel@lists.01.org
> > Cc: Laszlo Ersek <lersek@redhat.com>; Yao, Jiewen <jiewen.yao@intel.com>;
> > Dong, Eric <eric.dong@intel.com>
> > Subject: [edk2] [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page setup
> > for APs
> >
> > AP has its own stack for code execution. If PcdCpuStackGuard is enabled,
> > the page at the bottom of stack of AP will be disabled (NOT PRESENT) to
> > monitor the stack overflow issue. This requires PcdCpuApStackSize to be
> > set with value more than one page of memory.
> >
> > Cc: Jiewen Yao <jiewen.yao@intel.com>
> > Cc: Eric Dong <eric.dong@intel.com>
> > Cc: Laszlo Ersek <lersek@redhat.com>
> > Contributed-under: TianoCore Contribution Agreement 1.1
> > Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
> > ---
> > UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf | 1 +
> > UefiCpuPkg/Library/MpInitLib/DxeMpLib.c | 34
> > ++++++++++++++++++++++++---
> > 2 files changed, 32 insertions(+), 3 deletions(-)
> >
> > diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> > b/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> > index 805641b516..e7b9eb4462 100644
> > --- a/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> > +++ b/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> > @@ -73,4 +73,5 @@
> > gUefiCpuPkgTokenSpaceGuid.PcdCpuMicrocodePatchRegionSize
> ##
> > CONSUMES
> > gUefiCpuPkgTokenSpaceGuid.PcdCpuApLoopMode
> ## CONSUMES
> > gUefiCpuPkgTokenSpaceGuid.PcdCpuApTargetCstate
> ##
> > SOMETIMES_CONSUMES
> > + gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard
> ##
> > CONSUMES
> >
> > diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> > b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> > index 479f8189f6..40c1bf407a 100644
> > --- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> > +++ b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> > @@ -17,6 +17,7 @@
> > #include <Library/UefiLib.h>
> > #include <Library/UefiBootServicesTableLib.h>
> > #include <Library/DebugAgentLib.h>
> > +#include <Library/DxeServicesTableLib.h>
> >
> > #include <Protocol/Timer.h>
> >
> > @@ -288,9 +289,12 @@ InitMpGlobalData (
> > IN CPU_MP_DATA *CpuMpData
> > )
> > {
> > - EFI_STATUS Status;
> > - EFI_PHYSICAL_ADDRESS Address;
> > - UINTN ApSafeBufferSize;
> > + EFI_STATUS Status;
> > + EFI_PHYSICAL_ADDRESS Address;
> > + UINTN ApSafeBufferSize;
> > + UINTN Index;
> > + EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;
> > + UINTN StackBase;
> >
> > SaveCpuMpData (CpuMpData);
> >
> > @@ -301,6 +305,30 @@ InitMpGlobalData (
> > return;
> > }
> >
> > + if (PcdGetBool (PcdCpuStackGuard)) {
> > + //
> > + // One extra page at the bottom of the stack is needed for Guard page.
> > + //
> > + if (CpuMpData->CpuApStackSize <= EFI_PAGE_SIZE) {
> > + DEBUG ((DEBUG_ERROR, "PcdCpuApStackSize is not big enough for
> Stack
> > Guard!\n"));
> > + ASSERT (FALSE);
> > + }
> > +
> > + for (Index = 0; Index < CpuMpData->CpuCount; ++Index) {
> > + StackBase = CpuMpData->Buffer + Index *
> CpuMpData->CpuApStackSize;
> > +
> > + Status = gDS->GetMemorySpaceDescriptor (StackBase, &MemDesc);
> > + ASSERT_EFI_ERROR (Status);
> > +
> > + Status = gDS->SetMemorySpaceAttributes (
> > + StackBase,
> > + EFI_PAGES_TO_SIZE (1),
> > + MemDesc.Attributes | EFI_MEMORY_RP
> > + );
> > + ASSERT_EFI_ERROR (Status);
> > + }
> > + }
> > +
> > //
> > // Avoid APs access invalid buffer data which allocated by BootServices,
> > // so we will allocate reserved data for AP loop code. We also need to
> > --
> > 2.15.1.windows.2
> >
> > _______________________________________________
> > edk2-devel mailing list
> > edk2-devel@lists.01.org
> > https://lists.01.org/mailman/listinfo/edk2-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page setup for APs
2017-12-22 5:22 ` Yao, Jiewen
@ 2017-12-22 5:35 ` Wang, Jian J
0 siblings, 0 replies; 4+ messages in thread
From: Wang, Jian J @ 2017-12-22 5:35 UTC (permalink / raw)
To: Yao, Jiewen, edk2-devel@lists.01.org; +Cc: Laszlo Ersek, Dong, Eric
You're right. It will be updated to use more accurate wording. Thanks for catching it.
Regards,
Jian
> -----Original Message-----
> From: Yao, Jiewen
> Sent: Friday, December 22, 2017 1:22 PM
> To: Wang, Jian J <jian.j.wang@intel.com>; edk2-devel@lists.01.org
> Cc: Laszlo Ersek <lersek@redhat.com>; Dong, Eric <eric.dong@intel.com>
> Subject: RE: [edk2] [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page
> setup for APs
>
> I do not think we have AP guard page before, right?
> So I suggest we change commit message to be: Add missing Guard page setup
> for APs.
>
> With commit message update, reviewed-by: Jiewen.yao@intel.com
>
>
> > -----Original Message-----
> > From: Wang, Jian J
> > Sent: Friday, December 22, 2017 12:26 PM
> > To: Wang, Jian J <jian.j.wang@intel.com>; edk2-devel@lists.01.org
> > Cc: Laszlo Ersek <lersek@redhat.com>; Yao, Jiewen <jiewen.yao@intel.com>;
> > Dong, Eric <eric.dong@intel.com>
> > Subject: RE: [edk2] [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page
> > setup for APs
> >
> > Hi,
> >
> > Anyone has any comments on this?
> >
> > Regards,
> > Jian
> >
> >
> > > -----Original Message-----
> > > From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of
> Jian
> > J
> > > Wang
> > > Sent: Thursday, December 21, 2017 9:27 AM
> > > To: edk2-devel@lists.01.org
> > > Cc: Laszlo Ersek <lersek@redhat.com>; Yao, Jiewen
> <jiewen.yao@intel.com>;
> > > Dong, Eric <eric.dong@intel.com>
> > > Subject: [edk2] [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page
> setup
> > > for APs
> > >
> > > AP has its own stack for code execution. If PcdCpuStackGuard is enabled,
> > > the page at the bottom of stack of AP will be disabled (NOT PRESENT) to
> > > monitor the stack overflow issue. This requires PcdCpuApStackSize to be
> > > set with value more than one page of memory.
> > >
> > > Cc: Jiewen Yao <jiewen.yao@intel.com>
> > > Cc: Eric Dong <eric.dong@intel.com>
> > > Cc: Laszlo Ersek <lersek@redhat.com>
> > > Contributed-under: TianoCore Contribution Agreement 1.1
> > > Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
> > > ---
> > > UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf | 1 +
> > > UefiCpuPkg/Library/MpInitLib/DxeMpLib.c | 34
> > > ++++++++++++++++++++++++---
> > > 2 files changed, 32 insertions(+), 3 deletions(-)
> > >
> > > diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> > > b/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> > > index 805641b516..e7b9eb4462 100644
> > > --- a/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> > > +++ b/UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
> > > @@ -73,4 +73,5 @@
> > > gUefiCpuPkgTokenSpaceGuid.PcdCpuMicrocodePatchRegionSize
> > ##
> > > CONSUMES
> > > gUefiCpuPkgTokenSpaceGuid.PcdCpuApLoopMode
> > ## CONSUMES
> > > gUefiCpuPkgTokenSpaceGuid.PcdCpuApTargetCstate
> > ##
> > > SOMETIMES_CONSUMES
> > > + gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard
> > ##
> > > CONSUMES
> > >
> > > diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> > > b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> > > index 479f8189f6..40c1bf407a 100644
> > > --- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> > > +++ b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
> > > @@ -17,6 +17,7 @@
> > > #include <Library/UefiLib.h>
> > > #include <Library/UefiBootServicesTableLib.h>
> > > #include <Library/DebugAgentLib.h>
> > > +#include <Library/DxeServicesTableLib.h>
> > >
> > > #include <Protocol/Timer.h>
> > >
> > > @@ -288,9 +289,12 @@ InitMpGlobalData (
> > > IN CPU_MP_DATA *CpuMpData
> > > )
> > > {
> > > - EFI_STATUS Status;
> > > - EFI_PHYSICAL_ADDRESS Address;
> > > - UINTN ApSafeBufferSize;
> > > + EFI_STATUS Status;
> > > + EFI_PHYSICAL_ADDRESS Address;
> > > + UINTN ApSafeBufferSize;
> > > + UINTN Index;
> > > + EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;
> > > + UINTN StackBase;
> > >
> > > SaveCpuMpData (CpuMpData);
> > >
> > > @@ -301,6 +305,30 @@ InitMpGlobalData (
> > > return;
> > > }
> > >
> > > + if (PcdGetBool (PcdCpuStackGuard)) {
> > > + //
> > > + // One extra page at the bottom of the stack is needed for Guard page.
> > > + //
> > > + if (CpuMpData->CpuApStackSize <= EFI_PAGE_SIZE) {
> > > + DEBUG ((DEBUG_ERROR, "PcdCpuApStackSize is not big enough for
> > Stack
> > > Guard!\n"));
> > > + ASSERT (FALSE);
> > > + }
> > > +
> > > + for (Index = 0; Index < CpuMpData->CpuCount; ++Index) {
> > > + StackBase = CpuMpData->Buffer + Index *
> > CpuMpData->CpuApStackSize;
> > > +
> > > + Status = gDS->GetMemorySpaceDescriptor (StackBase, &MemDesc);
> > > + ASSERT_EFI_ERROR (Status);
> > > +
> > > + Status = gDS->SetMemorySpaceAttributes (
> > > + StackBase,
> > > + EFI_PAGES_TO_SIZE (1),
> > > + MemDesc.Attributes | EFI_MEMORY_RP
> > > + );
> > > + ASSERT_EFI_ERROR (Status);
> > > + }
> > > + }
> > > +
> > > //
> > > // Avoid APs access invalid buffer data which allocated by BootServices,
> > > // so we will allocate reserved data for AP loop code. We also need to
> > > --
> > > 2.15.1.windows.2
> > >
> > > _______________________________________________
> > > edk2-devel mailing list
> > > edk2-devel@lists.01.org
> > > https://lists.01.org/mailman/listinfo/edk2-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-12-22 5:30 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2017-12-21 1:27 [PATCH] UefiCpuPkg/MpInitLib: Fix incorrect Guard page setup for APs Jian J Wang
2017-12-22 4:26 ` Wang, Jian J
2017-12-22 5:22 ` Yao, Jiewen
2017-12-22 5:35 ` Wang, Jian J
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