Reviewed-by: Eric Dong <[email protected]> > -----Original Message----- > From: Wang, Jian J > Sent: Thursday, October 25, 2018 3:18 PM > To: [email protected] > Cc: Dong, Eric <[email protected]>; Laszlo Ersek <[email protected]>; > Zeng, Star <[email protected]>; Kinney, Michael D > <[email protected]>; Yao, Jiewen <[email protected]>; Ni, > Ruiyu <[email protected]> > Subject: [PATCH v4 3/6] UefiCpuPkg/CpuDxe: consider freed-memory guard > in non-stop mode > > > v4 changes: none > > Non-stop mode was introduced / explained in commit 8f2613628acf > ("MdeModulePkg/MdeModulePkg.dec: add new settings for PCDs", 2018- > 08-30). > > The macro HEAP_GUARD_NONSTOP_MODE was added to CpuDxe in commit > dcc026217fdc ("UefiCpuPkg/CpuDxe: implement non-stop mode for uefi", > 2018-08-30). > > Another instance of the macro HEAP_GUARD_NONSTOP_MODE was added > to PiSmmCpuDxeSmm -- with BIT1|BIT0 replaced with BIT3|BIT2 -- in commit > 09afd9a42a7f ("UefiCpuPkg/PiSmmCpuDxeSmm: implement non-stop mode > for SMM", 2018-08-30) > > Since the freed-memory guard is for UEFI-only. This patch only updates > HEAP_GUARD_NONSTOP_MODE in "UefiCpuPkg/CpuDxe/CpuDxe.h" (add > BIT4). > > Cc: Eric Dong <[email protected]> > Cc: Laszlo Ersek <[email protected]> > Cc: Star Zeng <[email protected]> > Cc: Michael D Kinney <[email protected]> > Cc: Jiewen Yao <[email protected]> > Cc: Ruiyu Ni <[email protected]> > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Jian J Wang <[email protected]> > --- > UefiCpuPkg/CpuDxe/CpuDxe.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/UefiCpuPkg/CpuDxe/CpuDxe.h b/UefiCpuPkg/CpuDxe/CpuDxe.h > index 064ea05bba..3183a3f7f4 100644 > --- a/UefiCpuPkg/CpuDxe/CpuDxe.h > +++ b/UefiCpuPkg/CpuDxe/CpuDxe.h > @@ -58,7 +58,7 @@ > ) > > #define HEAP_GUARD_NONSTOP_MODE \ > - ((PcdGet8 (PcdHeapGuardPropertyMask) & (BIT6|BIT1|BIT0)) > BIT6) > + ((PcdGet8 (PcdHeapGuardPropertyMask) & (BIT6|BIT4|BIT1|BIT0)) > > + BIT6) > > #define NULL_DETECTION_NONSTOP_MODE \ > ((PcdGet8 (PcdNullPointerDetectionPropertyMask) & (BIT6|BIT0)) > > BIT6) > -- > 2.16.2.windows.1
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