diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2015-06-12 06:24:41 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-07-21 13:10:03 -0400 |
| commit | eeac30f17f468292f1141c6f5d95afc38a18260f (patch) | |
| tree | 0a63b35c115efaf8470e4f006ad0bf35655f5c70 /arch/arm64/kernel/entry.S | |
| parent | 6bc62fd9b8493bd6a07bb73a5d63ed28fea40b78 (diff) | |
arm64: Do not attempt to use init_mm in reset_context()
commit 565630d503ef24e44c252bed55571b3a0d68455f upstream.
After secondary CPU boot or hotplug, the active_mm of the idle thread is
&init_mm. The init_mm.pgd (swapper_pg_dir) is only meant for TTBR1_EL1
and must not be set in TTBR0_EL1. Since when active_mm == &init_mm the
TTBR0_EL1 is already set to the reserved value, there is no need to
perform any context reset.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/kernel/entry.S')
0 files changed, 0 insertions, 0 deletions