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| author | Ingo Molnar <mingo@kernel.org> | 2015-03-05 22:52:18 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-03-05 22:52:18 +0300 |
| commit | 33ca8a53f262b4af40611bea331b8c87d133af72 (patch) | |
| tree | d6468c820a556c4915bcb5b761204a0fb19e8225 /Documentation/arm64/legacy_instructions.txt | |
| parent | db2dcb4f91d5fec5c346a82c309187ee821e2495 (diff) | |
| parent | 13a7a6ac0a11197edcd0f756a035f472b42cdf8b (diff) | |
| download | linux-33ca8a53f262b4af40611bea331b8c87d133af72.tar.xz | |
Merge tag 'v4.0-rc2' into irq/core, to refresh the tree before applying new changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/arm64/legacy_instructions.txt')
| -rw-r--r-- | Documentation/arm64/legacy_instructions.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/arm64/legacy_instructions.txt b/Documentation/arm64/legacy_instructions.txt index a3b3da2ec6ed..01bf3d9fac85 100644 --- a/Documentation/arm64/legacy_instructions.txt +++ b/Documentation/arm64/legacy_instructions.txt @@ -32,6 +32,9 @@ The default mode depends on the status of the instruction in the architecture. Deprecated instructions should default to emulation while obsolete instructions must be undefined by default. +Note: Instruction emulation may not be possible in all cases. See +individual instruction notes for further information. + Supported legacy instructions ----------------------------- * SWP{B} @@ -43,3 +46,12 @@ Default: Undef (0) Node: /proc/sys/abi/cp15_barrier Status: Deprecated Default: Emulate (1) + +* SETEND +Node: /proc/sys/abi/setend +Status: Deprecated +Default: Emulate (1)* +Note: All the cpus on the system must have mixed endian support at EL0 +for this feature to be enabled. If a new CPU - which doesn't support mixed +endian - is hotplugged in after this feature has been enabled, there could +be unexpected results in the application. |