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| author | Patrick Williams <iawillia@us.ibm.com> | 2012-08-10 12:03:47 -0500 |
|---|---|---|
| committer | A. Patrick Williams III <iawillia@us.ibm.com> | 2012-08-15 12:24:16 -0500 |
| commit | 7fce1b890805c829b28867ce8fdf35e102a7ff14 (patch) | |
| tree | 0bf9b318f4d6aa61f16ab1e1bbc701eed206d7d2 /src/kernel/syscall.C | |
| parent | b37ad3eba6e5d9334e4b35a1b32742fde4dff646 (diff) | |
| download | talos-hostboot-7fce1b890805c829b28867ce8fdf35e102a7ff14.tar.gz talos-hostboot-7fce1b890805c829b28867ce8fdf35e102a7ff14.zip | |
Disable EE when calling nap.
Due to the LPCR values, nap can already be exited by an
interrupt or decrementer event. Remove EE in the MSR so
that we are guarenteed that we fully enter nap even if
there is a interrupt or decrementer pending.
Change-Id: If70f82ea7c05576c1dd97de9e2a1d930c36ba46f
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/1515
Tested-by: Jenkins Server
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Diffstat (limited to 'src/kernel/syscall.C')
| -rw-r--r-- | src/kernel/syscall.C | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/kernel/syscall.C b/src/kernel/syscall.C index 645691d70..94c6a5860 100644 --- a/src/kernel/syscall.C +++ b/src/kernel/syscall.C @@ -681,9 +681,9 @@ namespace Systemcalls if (0x4c000364 == (*instruction)) // Verify 'nap' instruction, // otherwise just return. { - // Disable PR, IR, DR so 'nap' can be executed. + // Disable EE, PR, IR, DR so 'nap' can be executed. // (which means to stay in HV state) - t->context.msr_mask = 0x4030; + t->context.msr_mask = 0xC030; } }; |
