mdkinney d436d5ca09 Guarantee that free memory in the 4K page starting at address 0 is always cleared to 0. The algorithm is to clear page zero if it is registered with the DXE Core with type EfiConventionalMemory, and to also clear page zero if it is freed using the UEFI Boot Service FreePages(). This patch improves OS compatibility for OSes that may evaluate page 0 for legacy data structures. Before this patch, free memory may contain random values which induces random boot failures for some OSes. This patch may also help find NULL pointer bugs sooner because all of the fields in a data structure dereferenced through NULL will also be NULL now. ...

Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14218 6f19259b-4bc3-4df7-8a09-765794883524

2013-03-22 21:20:07 +00:00

..

Dxe

Guarantee that free memory in the 4K page starting at address 0 is always cleared to 0. The algorithm is to clear page zero if it is registered with the DXE Core with type EfiConventionalMemory, and to also clear page zero if it is freed using the UEFI Boot Service FreePages(). This patch improves OS compatibility for OSes that may evaluate page 0 for legacy data structures. Before this patch, free memory may contain random values which induces random boot failures for some OSes. This patch may also help find NULL pointer bugs sooner because all of the fields in a data structure dereferenced through NULL will also be NULL now.

2013-03-22 21:20:07 +00:00

DxeIplPeim

Check status before reporting error status code.

2012-12-20 03:21:14 +00:00

Pei

In order to make sure the image is section alignment, after allocate buffer for TE image, it will adjust the base address. But it has two potential issues: One is the start address may not section alignment, second is the buffer is not bigger enough to do the adjustment. This patch fixes these two issues.

2013-02-27 02:09:01 +00:00

PiSmmCore

Not close gEfiEndOfDxeEventGroupGuid event in ReadyToLock event notify because PI spec doesn't say gEfiEndOfDxeEventGroupGuid must be notified before ReadyToLock event.

2013-03-04 03:36:58 +00:00

RuntimeDxe

Add missing status code in several modules.

2012-10-30 04:23:40 +00:00