[edk2-devel] [PATCH] UefiCpuPkg: Fix CPU stack guard support by aligning GDT buffer

[Vitaly Cheptsov via groups.io]

Just to make it clear, this is an immediate solution that is good enough to fix the bug. However, a more proper solution would be to introduce the _Alignas ( https://en.cppreference.com/w/c/language/_Alignas ) concept to EDK II. I would suggest the following macro in Base.h:

/**
Enforce custom alignment for a variable definition.
Similar to C11 alignas macro from stdalign.h, except it must be functional to support MSVC.

@param  Alignment  Numeric alignment to require.
**/
#ifdef _MSC_EXTENSIONS
#define ALIGNAS(Alignment) __declspec(align(Alignment))
#else
#define ALIGNAS(Alignment) _Alignas(Alignment)
#endif

If there is no disagreement on this, I can imagine submitting an update after this patch is merged.


-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#80880): https://edk2.groups.io/g/devel/message/80880
Mute This Topic: https://groups.io/mt/85741694/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/edk2-devel-archive/attachments/20210920/d1353f91/attachment.htm>