powerpc/pseries: Pass CPPR value to H_XIRR hcall

Now that we properly keep track of the CPPR value (since
49bd3647134ea47420067aea8d1401e722bf2aac, "powerpc/pseries: Track previous
CPPR values to correctly EOI interrupts") we can pass it to the
H_XIRR hcall.

This is needed because the Partition Adjunct Option of new versions of
pHyp extend the H_XIRR hcall to include the CPPR as an input parameter.
Earlier versions not supporting this option just disregard the extra
input parameter, so this doesn't cause any problems for existing systems.

The Partition Adjunct Option is required for future systems that will
support SR-IOV capable devices.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index 0603c91538ae1aeed09d42c4902625199ed98e7a..a05f8d427856c39767e1627fab0c44b4f3b8cd35 100644 (file)
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -259,12 +259,12 @@ static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
        return plpar_hcall_norets(H_IPI, servernum, mfrr);
 }
 
-static inline long plpar_xirr(unsigned long *xirr_ret)
+static inline long plpar_xirr(unsigned long *xirr_ret, unsigned char cppr)
 {
        long rc;
        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 
-       rc = plpar_hcall(H_XIRR, retbuf);
+       rc = plpar_hcall(H_XIRR, retbuf, cppr);
 
        *xirr_ret = retbuf[0];
 

diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 4ca641042ec36a078b1b055bd163eff0a0dddd9a..1bcedd8b4616d29e139a74f15886ea119e260e72 100644 (file)
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -120,12 +120,12 @@ static inline void direct_qirr_info(int n_cpu, u8 value)
 
 /* LPAR low level accessors */
 
-static inline unsigned int lpar_xirr_info_get(void)
+static inline unsigned int lpar_xirr_info_get(unsigned char cppr)
 {
        unsigned long lpar_rc;
        unsigned long return_value;
 
-       lpar_rc = plpar_xirr(&return_value);
+       lpar_rc = plpar_xirr(&return_value, cppr);
        if (lpar_rc != H_SUCCESS)
                panic(" bad return code xirr - rc = %lx\n", lpar_rc);
        return (unsigned int)return_value;
@@ -331,7 +331,8 @@ static unsigned int xics_get_irq_direct(void)
 
 static unsigned int xics_get_irq_lpar(void)
 {
-       unsigned int xirr = lpar_xirr_info_get();
+       struct xics_cppr *os_cppr = &__get_cpu_var(xics_cppr);
+       unsigned int xirr = lpar_xirr_info_get(os_cppr->stack[os_cppr->index]);
        unsigned int vec = xics_xirr_vector(xirr);
        unsigned int irq;