diff options
| author | Suresh Warrier <warrier@linux.vnet.ibm.com> | 2015-12-17 14:59:05 -0600 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2016-02-29 16:25:06 +1100 |
| commit | ec13e9b6b13d66c54951fec7f1158bf85f68fecd (patch) | |
| tree | 7d9c389b1fc6c6b9aa85d7abf9adb5baea80c4ff /arch/powerpc/include/asm/xics.h | |
| parent | 31639c77e0a7f9f742c813ae697f337b44981ed2 (diff) | |
| download | linux-ec13e9b6b13d66c54951fec7f1158bf85f68fecd.tar.bz2 | |
powerpc/xics: Add icp_native_cause_ipi_rm
Function to cause an IPI by directly updating the MFFR register
in the XICS. The function is meant for real-mode callers since
they cannot use the smp_ops->cause_ipi function which uses an
ioremapped address.
Normal usage is for the the KVM real mode code to set the IPI message
using smp_muxed_ipi_message_pass and then invoke icp_native_cause_ipi_rm
to cause the actual IPI.
The function requires kvm_hstate.xics_phys to have been initialized
with the physical address of XICS.
Signed-off-by: Suresh Warrier <warrier@linux.vnet.ibm.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/include/asm/xics.h')
| -rw-r--r-- | arch/powerpc/include/asm/xics.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/xics.h b/arch/powerpc/include/asm/xics.h index 0e25bdb190bb..254604856e69 100644 --- a/arch/powerpc/include/asm/xics.h +++ b/arch/powerpc/include/asm/xics.h @@ -30,6 +30,7 @@ #ifdef CONFIG_PPC_ICP_NATIVE extern int icp_native_init(void); extern void icp_native_flush_interrupt(void); +extern void icp_native_cause_ipi_rm(int cpu); #else static inline int icp_native_init(void) { return -ENODEV; } #endif |