[Qemu-devel] [PATCH 3/3] s390x/pci: use the right pal and pba in reg_ioat()

[Yi Min Zhao <zyimin@linux.vnet.ibm.com>]

When registering ioat, pba should be comprised of leftmost 52 bits and
rightmost 12 binary zeros, and pal should be comprised of leftmost 52
bits and right most 12 binary ones. Let's fixup this.

Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
---
 hw/s390x/s390-pci-inst.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c
index 997a9cc2e9..3fcc330fe3 100644
--- a/hw/s390x/s390-pci-inst.c
+++ b/hw/s390x/s390-pci-inst.c
@@ -865,6 +865,8 @@ static int reg_ioat(CPUS390XState *env, S390PCIIOMMU *iommu, ZpciFib fib,
     uint8_t dt = (g_iota >> 2) & 0x7;
     uint8_t t = (g_iota >> 11) & 0x1;
 
+    pba &= ~0xfff;
+    pal |= 0xfff;
     if (pba > pal || pba < ZPCI_SDMA_ADDR || pal > ZPCI_EDMA_ADDR) {
         s390_program_interrupt(env, PGM_OPERAND, 6, ra);
         return -EINVAL;
-- 
2.14.3 (Apple Git-98)