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author | Chris Metcalf <cmetcalf@tilera.com> | 2013-05-02 19:29:04 (GMT) |
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committer | Chris Metcalf <cmetcalf@tilera.com> | 2013-05-02 20:20:31 (GMT) |
commit | c539914dcd9a68c63305e055b14115a6a19578a8 (patch) | |
tree | b422139d5d4628c8472fdf740dced263bc238c30 /arch/tile/lib/memmove.c | |
parent | c1be5a5b1b355d40e6cf79cc979eb66dafa24ad1 (diff) | |
download | linux-fsl-qoriq-c539914dcd9a68c63305e055b14115a6a19578a8.tar.xz |
tile: support new Tilera hypervisor
The Tilera hypervisor shipped in releases up through MDE 4.1 launches
the client operating system (i.e. Linux) at privilege level 1 (PL1).
Starting with MDE 4.2, as part of the work to enable KVM, the
Tilera hypervisor launches Linux at PL2 instead.
This commit makes the KERNEL_PL option default to 2 for tilegx, while
still saying at 1 for tilepro, which doesn't have an updated hypervisor.
It also explains how and when you might want to choose another value.
In addition, we change a small buglet in the on-chip Ethernet driver,
where we were failing to use the KERNEL_PL constant in an API call.
To make the transition cleaner, this change also provides the updated
hv_init() API for the new hypervisor that supports announcing Linux's
compiled-in PL, so the hypervisor can generate a suitable error in the
case of a mismatched hypervisor and Linux binary.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: stable@vger.linux.org
Diffstat (limited to 'arch/tile/lib/memmove.c')
0 files changed, 0 insertions, 0 deletions