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Diffstat (limited to 'docs/devel/reset.rst')
| -rw-r--r-- | docs/devel/reset.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/docs/devel/reset.rst b/docs/devel/reset.rst index 9746a4e8a0..ed41e09f16 100644 --- a/docs/devel/reset.rst +++ b/docs/devel/reset.rst @@ -44,6 +44,16 @@ The Resettable interface handles reset types with an enum ``ResetType``: value on each cold reset, such as RNG seed information, and which they must not reinitialize on a snapshot-load reset. +``RESET_TYPE_S390_CPU_NORMAL`` + This is only used for S390 CPU objects; it clears interrupts, stops + processing, and clears the TLB, but does not touch register contents. + +``RESET_TYPE_S390_CPU_INITIAL`` + This is only used for S390 CPU objects; it does everything + ``RESET_TYPE_S390_CPU_NORMAL`` does and also clears the PSW, prefix, + FPC, timer and control registers. It does not touch gprs, fprs or acrs. + + Devices which implement reset methods must treat any unknown ``ResetType`` as equivalent to ``RESET_TYPE_COLD``; this will reduce the amount of existing code we need to change if we add more types in future. |