[v3] PCI passthrough support on s390

[libvirt] [PATCH v3 04/12] qemu: Enable PCI multi bus for S390 guests

Posted by Yi Min Zhao 7 years, 6 months ago

QEMU on s390 supports PCI multibus since forever.

Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
---
 src/qemu/qemu_capabilities.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index aad6ef9461..30acc8e5e5 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -1767,6 +1767,10 @@ bool virQEMUCapsHasPCIMultiBus(virQEMUCapsPtr qemuCaps,
         return false;
     }
 
+    /* S390 supports PCI-multibus. */
+    if (ARCH_IS_S390(def->os.arch))
+        return true;
+
     /* If 'virt' supports PCI, it supports multibus.
      * No extra conditions here for simplicity.
      */
-- 
Yi Min

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Re: [libvirt] [PATCH v3 04/12] qemu: Enable PCI multi bus for S390 guests

Posted by Andrea Bolognani 7 years, 5 months ago

On Tue, 2018-08-07 at 17:10 +0800, Yi Min Zhao wrote:
> QEMU on s390 supports PCI multibus since forever.
> 
> Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
> Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
> Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
> Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
> Reviewed-by: Ján Tomko <jtomko@redhat.com>
> ---
>  src/qemu/qemu_capabilities.c | 4 ++++
>  1 file changed, 4 insertions(+)

Reviewed-by: Andrea Bolognani <abologna@redhat.com>

-- 
Andrea Bolognani / Red Hat / Virtualization

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Re: [libvirt] [PATCH v3 04/12] qemu: Enable PCI multi bus for S390 guests

Posted by Yi Min Zhao 7 years, 5 months ago


在 2018/8/16 下午10:45, Andrea Bolognani 写道:
> On Tue, 2018-08-07 at 17:10 +0800, Yi Min Zhao wrote:
>> QEMU on s390 supports PCI multibus since forever.
>>
>> Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
>> Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
>> Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
>> Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
>> Reviewed-by: Ján Tomko <jtomko@redhat.com>
>> ---
>>   src/qemu/qemu_capabilities.c | 4 ++++
>>   1 file changed, 4 insertions(+)
> Reviewed-by: Andrea Bolognani <abologna@redhat.com>
>
Thanks!

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