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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2010-10-25 18:10:38 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-10-25 18:10:19 +0400 |
| commit | f6649a7e5a9ee99e9623878f4a5579cc2f6cdd51 (patch) | |
| tree | 183438313c7593565980a1445f208e0ba30162cd /drivers/s390/kvm | |
| parent | 1e54622e0403891b10f2105663e0f9dd595a1f17 (diff) | |
| download | linux-f6649a7e5a9ee99e9623878f4a5579cc2f6cdd51.tar.xz | |
[S390] cleanup lowcore access from external interrupts
Read external interrupts parameters from the lowcore in the first
level interrupt handler in entry[64].S.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/kvm')
| -rw-r--r-- | drivers/s390/kvm/kvm_virtio.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index 5a46b8c5d68a..375aeeaf9ea5 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -372,21 +372,22 @@ static void hotplug_devices(struct work_struct *dummy) /* * we emulate the request_irq behaviour on top of s390 extints */ -static void kvm_extint_handler(u16 code) +static void kvm_extint_handler(unsigned int ext_int_code, + unsigned int param32, unsigned long param64) { struct virtqueue *vq; u16 subcode; u32 param; - subcode = S390_lowcore.cpu_addr; + subcode = ext_int_code >> 16; if ((subcode & 0xff00) != VIRTIO_SUBCODE_64) return; /* The LSB might be overloaded, we have to mask it */ - vq = (struct virtqueue *)(S390_lowcore.ext_params2 & ~1UL); + vq = (struct virtqueue *)(param64 & ~1UL); /* We use ext_params to decide what this interrupt means */ - param = S390_lowcore.ext_params & VIRTIO_PARAM_MASK; + param = param32 & VIRTIO_PARAM_MASK; switch (param) { case VIRTIO_PARAM_CONFIG_CHANGED: |