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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-07 11:35:31 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-09 15:19:57 +1100
commit9b256714979fad61ae11d90b53cf67dd5e6484eb (patch)
tree4e800dc0430b413bb9c3b3f0c68f6099bbe8716a /arch/powerpc/include
parent90c1e3c2fafec57fcb55b5d69bcf293b1a5fc8b3 (diff)
downloadlinux-stericsson-9b256714979fad61ae11d90b53cf67dd5e6484eb.tar.gz
powerpc/powernv: Fix CPU hotplug to handle waking on HVI
The IPIs come in as HVI not EE, so we need to test the appropriate SRR1 bits. The encoding is such that it won't have false positives on P7 and P8 so we can just test it like that. We also need to handle the icp-opal variant of the flush. Fixes: d74361881f0d ("powerpc/xics: Add ICP OPAL backend") Cc: stable@vger.kernel.org # v4.8+ Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
-rw-r--r--arch/powerpc/include/asm/reg.h3
-rw-r--r--arch/powerpc/include/asm/xics.h1
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index 0d4531aa2052..dff79798903d 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -649,9 +649,10 @@
#define SRR1_ISI_N_OR_G 0x10000000 /* ISI: Access is no-exec or G */
#define SRR1_ISI_PROT 0x08000000 /* ISI: Other protection fault */
#define SRR1_WAKEMASK 0x00380000 /* reason for wakeup */
-#define SRR1_WAKEMASK_P8 0x003c0000 /* reason for wakeup on POWER8 */
+#define SRR1_WAKEMASK_P8 0x003c0000 /* reason for wakeup on POWER8 and 9 */
#define SRR1_WAKESYSERR 0x00300000 /* System error */
#define SRR1_WAKEEE 0x00200000 /* External interrupt */
+#define SRR1_WAKEHVI 0x00240000 /* Hypervisor Virtualization Interrupt (P9) */
#define SRR1_WAKEMT 0x00280000 /* mtctrl */
#define SRR1_WAKEHMI 0x00280000 /* Hypervisor maintenance */
#define SRR1_WAKEDEC 0x00180000 /* Decrementer interrupt */
diff --git a/arch/powerpc/include/asm/xics.h b/arch/powerpc/include/asm/xics.h
index f0b238516e9b..e0b9e576905a 100644
--- a/arch/powerpc/include/asm/xics.h
+++ b/arch/powerpc/include/asm/xics.h
@@ -44,6 +44,7 @@ static inline int icp_hv_init(void) { return -ENODEV; }
#ifdef CONFIG_PPC_POWERNV
extern int icp_opal_init(void);
+extern void icp_opal_flush_interrupt(void);
#else
static inline int icp_opal_init(void) { return -ENODEV; }
#endif