4.9-rc1 boot regression

git bisect start
# bad: [c3f8f7fa8b19e274e7eb99dee428ad3a9b2ad8eb] Merge tag 'platform-drivers-x86-v4.9-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
git bisect bad c3f8f7fa8b19e274e7eb99dee428ad3a9b2ad8eb
# good: [c8d2bc9bc39ebea8437fd974fdbc21847bb897a3] Linux 4.8
git bisect good c8d2bc9bc39ebea8437fd974fdbc21847bb897a3
# bad: [41844e36206be90cd4d962ea49b0abc3612a99d0] Merge tag 'staging-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
git bisect bad 41844e36206be90cd4d962ea49b0abc3612a99d0
# bad: [d268dbe76a53d72cc41316eb59e7968db60e77ad] Merge tag 'pinctrl-v4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
git bisect bad d268dbe76a53d72cc41316eb59e7968db60e77ad
# bad: [02bafd96f3a5d8e610b19033ffec55b92459aaae] Merge tag 'docs-4.9' of git://git.lwn.net/linux                                                                                           git bisect bad 02bafd96f3a5d8e610b19033ffec55b92459aaae
# bad: [9929780e86854833e649b39b290b5fe921eb1701] Merge tag 'driver-core-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
git bisect bad 9929780e86854833e649b39b290b5fe921eb1701
# bad: [12b7bcb43e6ea834ab2f5dc52d971e379a0ca109] Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 12b7bcb43e6ea834ab2f5dc52d971e379a0ca109
# good: [72d39926f098b0c4ad95e1461595a8d6d403c14d] Merge tag 'acpi-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
git bisect good 72d39926f098b0c4ad95e1461595a8d6d403c14d
# good: [98ba1609298ccc849ddfe727c675c3a7b48b8dbc] perf tools: Make several display functions global
git bisect good 98ba1609298ccc849ddfe727c675c3a7b48b8dbc
# bad: [de956b8f45b3338cfb66a725e22b4050109daf2a] Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad de956b8f45b3338cfb66a725e22b4050109daf2a
# good: [d7a0dab82fef61bebd34f2bbb9314b075153b646] Merge branch 'core-smp-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good d7a0dab82fef61bebd34f2bbb9314b075153b646
# skip: [ac0e94b63e65f9c6d2f3c49107118e2228236db4] x86/efi: Initialize status to ensure garbage is not returned on small size
git bisect skip ac0e94b63e65f9c6d2f3c49107118e2228236db4
# bad: [2ab78a724b1fd885b65199707b8e053677745457] Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into efi/core
git bisect bad 2ab78a724b1fd885b65199707b8e053677745457
# skip: [15cf7cae087a2eaf5e1feeef2bbba1b5a94c7639] x86/efi: Remove unused find_bits() functiongit bisect skip 15cf7cae087a2eaf5e1feeef2bbba1b5a94c7639
# bad: [41a66072c32978ff3914fd6be88f7592ef64bef7] Merge branch 'efi/urgent' into efi/core, to pick up fixes                                                                                 git bisect bad 41a66072c32978ff3914fd6be88f7592ef64bef7
# skip: [21b3ddd39feecd2f4d6c52bcd30f0a4fa14f125a] efi: Don't use spinlocks for efi vars
git bisect skip 21b3ddd39feecd2f4d6c52bcd30f0a4fa14f125a
# skip: [0513fe1d28e45deb39159dbeedf0660c3f0effd2] x86/efi: Map in physical addresses in efi_map_region_fixed                                                                               git bisect skip 0513fe1d28e45deb39159dbeedf0660c3f0effd2
# good: [9479c7cebfb568f8b8b424be7f1cac120e9eea95] efi: Refactor efi_memmap_init_early() into arch-neutral code
git bisect good 9479c7cebfb568f8b8b424be7f1cac120e9eea95
# skip: [22c2b77f419bdc9317f00b395283abd33157368e] fs/efivarfs: Fix double kfree() in error path
git bisect skip 22c2b77f419bdc9317f00b395283abd33157368e
# bad: [27571616385af9c2d6a3e570b06baf86f5aa04b1] x86/efi: Optimize away setup_gop32/64 if unused
git bisect bad 27571616385af9c2d6a3e570b06baf86f5aa04b1
# skip: [2ead3084e3fc37d42f379cca8753b458d8f9ba25] efi/arm*: esrt: Add missing call to efi_esrt_init()
git bisect skip 2ead3084e3fc37d42f379cca8753b458d8f9ba25
# good: [60863c0d1a96b740048cc7d94a2d00d6f89ba3d8] efi: Split out EFI memory map functions into new file
git bisect good 60863c0d1a96b740048cc7d94a2d00d6f89ba3d8
# skip: [dce48e351c0d42014e5fb16ac3eb099e11b7e716] efi: Replace runtime services spinlock with semaphore
git bisect skip dce48e351c0d42014e5fb16ac3eb099e11b7e716
# bad: [31ce8cc68180803aa481c0c1daac29d8eaceca9d] efi/runtime-map: Use efi.memmap directly instead of a copy
git bisect bad 31ce8cc68180803aa481c0c1daac29d8eaceca9d
# bad: [816e76129ed5fadd28e526c43397c79775194b5c] efi: Allow drivers to reserve boot services forever
git bisect bad 816e76129ed5fadd28e526c43397c79775194b5c
# good: [c45f4da33a297f85435f8dccb26a24852ea01bb9] efi: Add efi_memmap_install() for installing new EFI memory maps
git bisect good c45f4da33a297f85435f8dccb26a24852ea01bb9
# first bad commit: [816e76129ed5fadd28e526c43397c79775194b5c] efi: Allow drivers to reserve boot services forever