I verified that this works on multiple platforms
Tested-by: Samer El-Haj-Mahmoud <samer.el-haj-mahm...@arm.com>
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Samer
> El-Haj-Mahmoud via groups.io
> Sent: Thursday, July 23, 2020 10:33 PM
> To: Pankaj Bansal <pankaj.ban...@oss.nxp.com>; devel@edk2.groups.io;
> Eric Jin <eric....@intel.com>; G Edhaya Chandran
> <edhaya.chand...@arm.com>
> Cc: Pankaj Bansal <pankaj.ban...@nxp.com>; Paul Yang
> <paul.y...@arm.com>; Gaurav Jain <gaurav.j...@nxp.com>; Samer El-Haj-
> Mahmoud <samer.el-haj-mahm...@arm.com>
> Subject: Re: [edk2-devel] [PATCH edk2-test 1/1] SctPkg: fix page alignment
> calculations
>
> Acked-by: Samer El-Haj-Mahmoud <samer.el-haj-mahm...@arm.com>
>
> > -----Original Message-----
> > From: Pankaj Bansal <pankaj.ban...@oss.nxp.com>
> > Sent: Saturday, July 4, 2020 11:52 AM
> > To: devel@edk2.groups.io; Eric Jin <eric....@intel.com>; G Edhaya
> > Chandran <edhaya.chand...@arm.com>
> > Cc: Pankaj Bansal <pankaj.ban...@nxp.com>; Paul Yang
> > <paul.y...@arm.com>; Samer El-Haj-Mahmoud <Samer.El-Haj-
> > mahm...@arm.com>; Gaurav Jain <gaurav.j...@nxp.com>
> > Subject: [PATCH edk2-test 1/1] SctPkg: fix page alignment calculations
> >
> > From: Pankaj Bansal <pankaj.ban...@nxp.com>
> >
> > The BBTestAllocatePagesInterfaceTest tries to allocate pages for
> > different memory types.
> > While doing so, it tries to fix up the Start and PageNum for 64K Page
> > size. There are multiple issues with this:
> >
> > 1. 64K alignment is being done regardless of Processor type and Memory
> > type. while this is correct for ARM64 Processor, it might not be so
> > for other Processor types. Also 64K alignment for ARM64 Processor
> > is needed for some Memory types not all.
> > 2. The Start is being incremented by 64K, even if Start is already 64K
> > aligned.
> > 3. PageNum is being decreased by 16 pages indiscriminately, which might
> > not be needed in all cases.
> >
> > fix all these issues by correctly doing the alignment in all needed cases.
> >
> > Cc: Paul Yang <paul.y...@arm.com>
> > Cc: Samer El-Haj-Mahmoud <samer.el-haj-mahm...@arm.com>
> > Cc: Gaurav Jain <gaurav.j...@nxp.com>
> > Signed-off-by: Pankaj Bansal <pankaj.ban...@nxp.com>
> > ---
> > .../MemoryAllocationServicesBBTestFunction.c | 148
> > +++++++++++++-----
> > 1 file changed, 106 insertions(+), 42 deletions(-)
> >
> > diff --git a/uefi-
> >
> sct/SctPkg/TestCase/UEFI/EFI/BootServices/MemoryAllocationServices/Bla
> > ckBo xTest/MemoryAllocationServicesBBTestFunction.c b/uefi-
> >
> sct/SctPkg/TestCase/UEFI/EFI/BootServices/MemoryAllocationServices/Bla
> > ckBo xTest/MemoryAllocationServicesBBTestFunction.c
> > index d18fe1fc2b94..9ed9e6e0de74 100644
> > --- a/uefi-
> >
> sct/SctPkg/TestCase/UEFI/EFI/BootServices/MemoryAllocationServices/Bla
> > ckBo xTest/MemoryAllocationServicesBBTestFunction.c
> > +++ b/uefi-
> sct/SctPkg/TestCase/UEFI/EFI/BootServices/MemoryAllocationS
> > +++ er vices/BlackBoxTest/MemoryAllocationServicesBBTestFunction.c
> > @@ -354,6 +354,7 @@ BBTestAllocatePagesInterfaceTest (
> > EFI_TPL OldTpl;
> > EFI_MEMORY_DESCRIPTOR Descriptor;
> > UINTN PageNum;
> > + UINTN Alignment;
> >
> > //
> > // Get the Standard Library Interface @@ -700,14 +701,23 @@
> > BBTestAllocatePagesInterfaceTest (
> > PageNum = (UINTN)Descriptor.NumberOfPages;
> > Start = Descriptor.PhysicalStart;
> >
> > - //
> > - // Some memory types need more alignment than 4K, so
> > - //
> > - if (PageNum <= 0x10) {
> > + Alignment = DEFAULT_PAGE_ALLOCATION_GRANULARITY;
> > +
> > + if (AllocatePagesMemoryType[TypeIndex] ==
> EfiACPIReclaimMemory ||
> > + AllocatePagesMemoryType[TypeIndex] == EfiACPIMemoryNVS
> ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> EfiRuntimeServicesCode ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> > + EfiRuntimeServicesData) {
> > +
> > + Alignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;
> > + }
> > +
> > + Start = (Start + Alignment - 1) & ~(Alignment - 1);
> > + PageNum -= EFI_SIZE_TO_PAGES (Start -
> > + Descriptor.PhysicalStart);
> > +
> > + PageNum &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);
> > + if (PageNum <= EFI_SIZE_TO_PAGES (Alignment)) {
> > break;
> > }
> > - Start = (Start + 0x10000) & 0xFFFFFFFFFFFF0000;
> > - PageNum = PageNum - EFI_SIZE_TO_PAGES(0x10000);
> >
> > Memory = Start;
> >
> > @@ -830,14 +840,23 @@ BBTestAllocatePagesInterfaceTest (
> > PageNum = (UINTN)Descriptor.NumberOfPages;
> > Start = Descriptor.PhysicalStart;
> >
> > - //
> > - // Some memory types need more alignment than 4K, so
> > - //
> > - if (PageNum <= 0x10) {
> > + Alignment = DEFAULT_PAGE_ALLOCATION_GRANULARITY;
> > +
> > + if (AllocatePagesMemoryType[TypeIndex] ==
> EfiACPIReclaimMemory ||
> > + AllocatePagesMemoryType[TypeIndex] == EfiACPIMemoryNVS
> ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> EfiRuntimeServicesCode ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> > + EfiRuntimeServicesData) {
> > +
> > + Alignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;
> > + }
> > +
> > + Start = (Start + Alignment - 1) & ~(Alignment - 1);
> > + PageNum -= EFI_SIZE_TO_PAGES (Start -
> > + Descriptor.PhysicalStart);
> > +
> > + PageNum &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);
> > + if (PageNum <= EFI_SIZE_TO_PAGES (Alignment)) {
> > break;
> > }
> > - Start = (Start + 0x10000) & 0xFFFFFFFFFFFF0000;
> > - PageNum = PageNum - EFI_SIZE_TO_PAGES(0x10000);
> >
> > Memory = Start;
> >
> > @@ -953,14 +972,23 @@ BBTestAllocatePagesInterfaceTest (
> > PageNum = (UINTN)Descriptor.NumberOfPages;
> > Start = Descriptor.PhysicalStart;
> >
> > - //
> > - // Some memory types need more alignment than 4K, so
> > - //
> > - if (PageNum <= 0x10) {
> > + Alignment = DEFAULT_PAGE_ALLOCATION_GRANULARITY;
> > +
> > + if (AllocatePagesMemoryType[TypeIndex] ==
> EfiACPIReclaimMemory ||
> > + AllocatePagesMemoryType[TypeIndex] == EfiACPIMemoryNVS
> ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> EfiRuntimeServicesCode ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> > + EfiRuntimeServicesData) {
> > +
> > + Alignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;
> > + }
> > +
> > + Start = (Start + Alignment - 1) & ~(Alignment - 1);
> > + PageNum -= EFI_SIZE_TO_PAGES (Start -
> > + Descriptor.PhysicalStart);
> > +
> > + PageNum &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);
> > + if (PageNum <= EFI_SIZE_TO_PAGES (Alignment)) {
> > break;
> > }
> > - Start = (Start + 0x10000) & 0xFFFFFFFFFFFF0000;
> > - PageNum = PageNum - EFI_SIZE_TO_PAGES(0x10000);
> >
> > Memory = Start + (SctLShiftU64 (PageNum/3, EFI_PAGE_SHIFT) &
> > 0xFFFFFFFFFFFF0000);
> >
> > @@ -1076,14 +1104,23 @@ BBTestAllocatePagesInterfaceTest (
> > PageNum = (UINTN)Descriptor.NumberOfPages;
> > Start = Descriptor.PhysicalStart;
> >
> > - //
> > - // Some memory types need more alignment than 4K, so
> > - //
> > - if (PageNum <= 0x10) {
> > + Alignment = DEFAULT_PAGE_ALLOCATION_GRANULARITY;
> > +
> > + if (AllocatePagesMemoryType[TypeIndex] ==
> EfiACPIReclaimMemory ||
> > + AllocatePagesMemoryType[TypeIndex] == EfiACPIMemoryNVS
> ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> EfiRuntimeServicesCode ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> > + EfiRuntimeServicesData) {
> > +
> > + Alignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;
> > + }
> > +
> > + Start = (Start + Alignment - 1) & ~(Alignment - 1);
> > + PageNum -= EFI_SIZE_TO_PAGES (Start -
> > + Descriptor.PhysicalStart);
> > +
> > + PageNum &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);
> > + if (PageNum <= EFI_SIZE_TO_PAGES (Alignment)) {
> > break;
> > }
> > - Start = (Start + 0x10000) & 0xFFFFFFFFFFFF0000;
> > - PageNum = PageNum - EFI_SIZE_TO_PAGES(0x10000);
> >
> > Memory = Start + (SctLShiftU64 (PageNum * 2 / 3,
> > EFI_PAGE_SHIFT) & 0xFFFFFFFFFFFF0000);
> >
> > @@ -1206,14 +1243,23 @@ BBTestAllocatePagesInterfaceTest (
> > PageNum = (UINTN)Descriptor.NumberOfPages;
> > Start = Descriptor.PhysicalStart;
> >
> > - //
> > - // Some memory types need more alignment than 4K, so
> > - //
> > - if (PageNum <= 0x10) {
> > + Alignment = DEFAULT_PAGE_ALLOCATION_GRANULARITY;
> > +
> > + if (AllocatePagesMemoryType[TypeIndex] ==
> EfiACPIReclaimMemory ||
> > + AllocatePagesMemoryType[TypeIndex] == EfiACPIMemoryNVS
> ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> EfiRuntimeServicesCode ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> > + EfiRuntimeServicesData) {
> > +
> > + Alignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;
> > + }
> > +
> > + Start = (Start + Alignment - 1) & ~(Alignment - 1);
> > + PageNum -= EFI_SIZE_TO_PAGES (Start -
> > + Descriptor.PhysicalStart);
> > +
> > + PageNum &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);
> > + if (PageNum <= EFI_SIZE_TO_PAGES (Alignment)) {
> > break;
> > }
> > - Start = (Start + 0x10000) & 0xFFFFFFFFFFFF0000;
> > - PageNum = PageNum - EFI_SIZE_TO_PAGES(0x10000);
> >
> > Memory = Start;
> >
> > @@ -1329,14 +1375,23 @@ BBTestAllocatePagesInterfaceTest (
> > PageNum = (UINTN)Descriptor.NumberOfPages;
> > Start = Descriptor.PhysicalStart;
> >
> > - //
> > - // Some memory types need more alignment than 4K, so
> > - //
> > - if (PageNum <= 0x10) {
> > + Alignment = DEFAULT_PAGE_ALLOCATION_GRANULARITY;
> > +
> > + if (AllocatePagesMemoryType[TypeIndex] ==
> EfiACPIReclaimMemory ||
> > + AllocatePagesMemoryType[TypeIndex] == EfiACPIMemoryNVS
> ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> EfiRuntimeServicesCode ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> > + EfiRuntimeServicesData) {
> > +
> > + Alignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;
> > + }
> > +
> > + Start = (Start + Alignment - 1) & ~(Alignment - 1);
> > + PageNum -= EFI_SIZE_TO_PAGES (Start -
> > + Descriptor.PhysicalStart);
> > +
> > + PageNum &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);
> > + if (PageNum <= EFI_SIZE_TO_PAGES (Alignment)) {
> > break;
> > }
> > - Start = (Start + 0x10000) & 0xFFFFFFFFFFFF0000;
> > - PageNum = PageNum - EFI_SIZE_TO_PAGES(0x10000);
> >
> > Memory = Start;
> >
> > @@ -1468,14 +1523,23 @@ BBTestAllocatePagesInterfaceTest (
> > PageNum = (UINTN)Descriptor.NumberOfPages;
> > Start = Descriptor.PhysicalStart;
> >
> > - //
> > - // Some memory types need more alignment than 4K, so
> > - //
> > - if (PageNum <= 0x10) {
> > + Alignment = DEFAULT_PAGE_ALLOCATION_GRANULARITY;
> > +
> > + if (AllocatePagesMemoryType[TypeIndex] ==
> EfiACPIReclaimMemory ||
> > + AllocatePagesMemoryType[TypeIndex] == EfiACPIMemoryNVS
> ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> EfiRuntimeServicesCode ||
> > + AllocatePagesMemoryType[TypeIndex] ==
> > + EfiRuntimeServicesData) {
> > +
> > + Alignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;
> > + }
> > +
> > + Start = (Start + Alignment - 1) & ~(Alignment - 1);
> > + PageNum -= EFI_SIZE_TO_PAGES (Start -
> > + Descriptor.PhysicalStart);
> > +
> > + PageNum &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);
> > + if (PageNum <= EFI_SIZE_TO_PAGES (Alignment)) {
> > break;
> > }
> > - Start = (Start + 0x10000) & 0xFFFFFFFFFFFF0000;
> > - PageNum = PageNum - EFI_SIZE_TO_PAGES(0x10000);
> >
> > Memory = Start;
> >
> > --
> > 2.17.1
>
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