[ipxe-devel] [ipxe/ipxe] [efi] Restore the TPL to the original one (#113)

[He Huang]

iPXE added a workaround to raise TPL to TPL_CALLBACK always, but it
would cause UEFI firmware exit boot service callback with the same TPL
level cannot be executed. Worse, some UEFI modules set a pointer at exit
boot service callback and use later, then will encounter exception /
hang for invalid pointer which is not set to a correct one since the
exit boot service callback is not executed.

The solution is to restore the TPL to the original one but not always
set it to TPL_CALLBACK.
You can view, comment on, or merge this pull request online at:

  https://github.com/ipxe/ipxe/pull/113

-- Commit Summary --

  * [efi] Restore the TPL to the original one

-- File Changes --

    M src/interface/efi/efi_timer.c (11)

-- Patch Links --

https://github.com/ipxe/ipxe/pull/113.patch
https://github.com/ipxe/ipxe/pull/113.diff

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https://github.com/ipxe/ipxe/pull/113
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