Revert of Make text section 2MB aligned for hugepages. (patchset #7 id:120001 of https://codereview…

Revert of Make text section 2MB aligned for hugepages. (patchset #7 id:120001 of https://codereview.chromium.org/1619713007/ )

Reason for revert:
Causing failures on x86-alex, peach_pit, and daisy_skate (render process crash in login screen).

Original issue's description:
> Make text section 2MB aligned for hugepages.
>
> If we do not use the option '-Wl,--section-start=.text=2001000' at
> link time, the performance gain on hugepages is gone. This is probably
> because the original text section is not 2MB aligned and the after
> mremap, the hugepage is not preserved.
>
> BUG=chromium:569963
> TEST=The performance gain is back on micro benchmarks.
>
> Committed: https://crrev.com/1384534a94e6324d74906f0cbc1e707606c063f2
> Cr-Commit-Position: refs/heads/master@{#373673}

TBR=rickyz@chromium.org,cmtice@chromium.org,kenchen@google.com,llozano@chromium.org,shenhan@chromium.org,yunlian@chromium.org,yunlian@chromium.org
BUG=chromium:569963
Review URL: https://codereview.chromium.org/1687033002

Cr-Commit-Position: refs/heads/master@{#374687}
(cherry picked from commit f0aab631c727924fb1ae2ff9e6ba5878c073b717)

Committed: https://chromium.googlesource.com/chromium/src/+/1c19dc1b4ca8d047819ec63752bbfb4519aedd93

[stevenjb, 2016-02-10 18:40:14]

Description was changed from

==========
Revert of Make text section 2MB aligned for hugepages. (patchset #7 id:120001 of
https://codereview.chromium.org/1619713007/ )

Reason for revert:
Causing failures on x86-alex, peach_pit, and daisy_skate (render process crash
in login screen).

Original issue's description:
> Make text section 2MB aligned for hugepages.
>
> If we do not use the option '-Wl,--section-start=.text=2001000' at
> link time, the performance gain on hugepages is gone. This is probably
> because the original text section is not 2MB aligned and the after
> mremap, the hugepage is not preserved.
>
> BUG=chromium:569963
> TEST=The performance gain is back on micro benchmarks.
>
> Committed: https://crrev.com/1384534a94e6324d74906f0cbc1e707606c063f2
> Cr-Commit-Position: refs/heads/master@{#373673}

TBR=rickyz@chromium.org,cmtice@chromium.org,kenchen@google.com,llozano@chromi...
BUG=chromium:569963

Review URL: https://codereview.chromium.org/1687033002

Cr-Commit-Position: refs/heads/master@{#374687}
(cherry picked from commit f0aab631c727924fb1ae2ff9e6ba5878c073b717)
==========

to

==========
Revert of Make text section 2MB aligned for hugepages. (patchset #7 id:120001 of
https://codereview.chromium.org/1619713007/ )

Reason for revert:
Causing failures on x86-alex, peach_pit, and daisy_skate (render process crash
in login screen).

Original issue's description:
> Make text section 2MB aligned for hugepages.
>
> If we do not use the option '-Wl,--section-start=.text=2001000' at
> link time, the performance gain on hugepages is gone. This is probably
> because the original text section is not 2MB aligned and the after
> mremap, the hugepage is not preserved.
>
> BUG=chromium:569963
> TEST=The performance gain is back on micro benchmarks.
>
> Committed: https://crrev.com/1384534a94e6324d74906f0cbc1e707606c063f2
> Cr-Commit-Position: refs/heads/master@{#373673}

TBR=rickyz@chromium.org,cmtice@chromium.org,kenchen@google.com,llozano@chromi...
BUG=chromium:569963

Review URL: https://codereview.chromium.org/1687033002

Cr-Commit-Position: refs/heads/master@{#374687}
(cherry picked from commit f0aab631c727924fb1ae2ff9e6ba5878c073b717)

Committed:
https://chromium.googlesource.com/chromium/src/+/1c19dc1b4ca8d047819ec63752bb...
==========

[stevenjb, 2016-02-10 18:40:16]

Committed patchset #1 (id:1) manually as
1c19dc1b4ca8d047819ec63752bbfb4519aedd93.

[rickyz (no longer on Chrome), 2016-02-10 21:55:24]

lgtm