[edk2-devel] [PATCH] UefiPayloadPkg: Always split page table entry to 4K if it covers stack.

[Gerd Hoffmann]

On Tue, May 31, 2022 at 01:39:37PM +0800, Zhiguang Liu wrote:
> There is a concern case that stack and a proteced DXE memory range is in
> the same 2M Page Table entry, and somehow CPU doesn't flash the page
> table entry cache for stack, and causes Page fault when using stack.

Can you clarify the "somehow" please?  Are we discussing a workaround
for a cpu bug here?  If not this sounds like a tlbflush instruction is
missing somewhere ...

take care,
  Gerd



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