Hi Michael,

On Fri, Nov 06, 2015 at 05:24:02PM +0000, Kinney, Michael D wrote:
> Hi,
> 
> There are macros in MdePkg/Include/Base.h that help align values and pointers 
> to the next boundary.  
> This patch could use the following:
> 
>       TftpBufferSize = ALIGN_VALUE (TftpBufferSize, SIZE_16MB);
> 
> /**
>   Rounds a value up to the next boundary using a specified alignment.
> 
>   This function rounds Value up to the next boundary using the specified 
> Alignment.
>   This aligned value is returned.
> 
>   @param   Value      The value to round up.
>   @param   Alignment  The alignment boundary used to return the aligned value.
> 
>   @return  A value up to the next boundary.
> 
> **/
> #define ALIGN_VALUE(Value, Alignment) ((Value) + (((Alignment) - (Value)) & 
> ((Alignment) - 1)))

Yes, this would definitely have been a cleaner thing to do.
But looking at the existing surrounding code I just see so many
problems with it - it needs to disappear, and this is just band-aid.
So in this instance I prefer to keep the diffstat simple.

Regards,

Leif

> >-----Original Message-----
> >From: edk2-devel [mailto:[email protected]] On Behalf Of
> >Ashutosh Singh
> >Sent: Friday, November 06, 2015 9:01 AM
> >To: [email protected]
> >Cc: [email protected]; [email protected]; [email protected];
> >[email protected]; [email protected]
> >Subject: [edk2] [PATCH] ArmPkg/BdsLib: Increase fallback tftp buffer size
> >
> >When performing a tftp download from a server which does not support
> >rfc2349 transfer size option (such as netkit-tftpd), the existing code
> >falls back to allocating an 8MB buffer. Since this is insufficient for
> >an uncompressed AArch64 Linux kernel image, double the size to 16MB.
> >
> >Contributed-under: TianoCore Contribution Agreement 1.0
> >Signed-off-by: Ashutosh Singh <[email protected]>
> >---
> > ArmPkg/Library/BdsLib/BdsFilePath.c |    4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> >diff --git a/ArmPkg/Library/BdsLib/BdsFilePath.c
> >b/ArmPkg/Library/BdsLib/BdsFilePath.c
> >index ff42175..0410236 100644
> >--- a/ArmPkg/Library/BdsLib/BdsFilePath.c
> >+++ b/ArmPkg/Library/BdsLib/BdsFilePath.c
> >@@ -1198,7 +1198,7 @@ BdsTftpLoadImage (
> >   if (Mtftp4GetFileSize (Mtftp4, AsciiFilePath, &FileSize) == EFI_SUCCESS) {
> >     TftpBufferSize = FileSize;
> >   } else {
> >-    TftpBufferSize = SIZE_8MB;
> >+    TftpBufferSize = SIZE_16MB;
> >   }
> >
> >   TftpContext = AllocatePool (sizeof (BDS_TFTP_CONTEXT));
> >@@ -1209,7 +1209,7 @@ BdsTftpLoadImage (
> >   TftpContext->FileSize = FileSize;
> >
> >   for (; TftpBufferSize <= FixedPcdGet32 (PcdMaxTftpFileSize);
> >-         TftpBufferSize = (TftpBufferSize + SIZE_8MB) & (~(SIZE_8MB-1))) {
> >+         TftpBufferSize = (TftpBufferSize + SIZE_16MB) & (~(SIZE_16MB-1))) {
> >     //
> >     // Allocate a buffer to hold the whole file.
> >     //
> >--
> >1.7.9.5
> >
> >
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