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| author | Michael Brown | 2018-03-12 11:55:28 +0100 |
|---|---|---|
| committer | Michael Brown | 2018-03-12 12:02:19 +0100 |
| commit | d8c500b7945e57023dde5bd0be2b0e40963315d9 (patch) | |
| tree | e1303ba73b7dcf7600e3d96b57d4c143d4ea1cc5 /src/interface/efi/efi_driver.c | |
| parent | [iscsi] Parse IPv6 address in root path (diff) | |
| download | ipxe-d8c500b7945e57023dde5bd0be2b0e40963315d9.tar.gz ipxe-d8c500b7945e57023dde5bd0be2b0e40963315d9.tar.xz ipxe-d8c500b7945e57023dde5bd0be2b0e40963315d9.zip | |
[efi] Drop to TPL_APPLICATION when gathering entropy
Commit c89a446 ("[efi] Run at TPL_CALLBACK to protect against UEFI
timers") introduced a regression in the EFI entropy gathering code.
When the EFI_RNG_PROTOCOL is not present, we fall back to using timer
interrupts (as for the BIOS build). Since timer interrupts are
disabled at TPL_CALLBACK, WaitForEvent() fails and no entropy can be
gathered.
Fix by dropping to TPL_APPLICATION while entropy gathering is enabled.
Reported-by: Andreas Hammarskjöld <junior@2PintSoftware.com>
Tested-by: Andreas Hammarskjöld <junior@2PintSoftware.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/interface/efi/efi_driver.c')
0 files changed, 0 insertions, 0 deletions