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Re: [Qemu-devel] [PATCH 1/2] x86_iommu: Move machine check to x86_iommu_
From: |
Peter Xu |
Subject: |
Re: [Qemu-devel] [PATCH 1/2] x86_iommu: Move machine check to x86_iommu_realize() |
Date: |
Fri, 15 Sep 2017 21:55:43 +0800 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Fri, Sep 15, 2017 at 09:52:23PM +0800, Peter Xu wrote:
> On Fri, Sep 15, 2017 at 01:13:45PM +0200, Mohammed Gamal wrote:
> > Instead of having the same error checks in vtd_realize()
> > and amdvi_realize(), move that over to the generic
> > x86_iommu_realize().
> >
> > Signed-off-by: Mohammed Gamal <address@hidden>
> > ---
> > hw/i386/amd_iommu.c | 10 +---------
> > hw/i386/intel_iommu.c | 10 +---------
> > hw/i386/x86-iommu.c | 13 +++++++++++++
> > 3 files changed, 15 insertions(+), 18 deletions(-)
> >
> > diff --git a/hw/i386/amd_iommu.c b/hw/i386/amd_iommu.c
> > index 334938a..839f01f 100644
> > --- a/hw/i386/amd_iommu.c
> > +++ b/hw/i386/amd_iommu.c
> > @@ -1141,18 +1141,10 @@ static void amdvi_realize(DeviceState *dev, Error
> > **err)
> > AMDVIState *s = AMD_IOMMU_DEVICE(dev);
> > X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(dev);
> > MachineState *ms = MACHINE(qdev_get_machine());
> > - MachineClass *mc = MACHINE_GET_CLASS(ms);
> > PCMachineState *pcms =
> > PC_MACHINE(object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE));
> > - PCIBus *bus;
> > + PCIBus *bus = pcms->bus;
> >
> > - if (!pcms) {
> > - error_setg(err, "Machine-type '%s' not supported by amd-iommu",
> > - mc->name);
> > - return;
> > - }
> > -
> > - bus = pcms->bus;
> > s->iotlb = g_hash_table_new_full(amdvi_uint64_hash,
> > amdvi_uint64_equal, g_free, g_free);
> >
> > diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
> > index 3a5bb0b..aa01812 100644
> > --- a/hw/i386/intel_iommu.c
> > +++ b/hw/i386/intel_iommu.c
> > @@ -3027,20 +3027,12 @@ static bool vtd_decide_config(IntelIOMMUState *s,
> > Error **errp)
> > static void vtd_realize(DeviceState *dev, Error **errp)
> > {
> > MachineState *ms = MACHINE(qdev_get_machine());
> > - MachineClass *mc = MACHINE_GET_CLASS(ms);
> > PCMachineState *pcms =
> > PC_MACHINE(object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE));
> > - PCIBus *bus;
> > + PCIBus *bus = pcms->bus;
> > IntelIOMMUState *s = INTEL_IOMMU_DEVICE(dev);
> > X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(dev);
> >
> > - if (!pcms) {
> > - error_setg(errp, "Machine-type '%s' not supported by intel-iommu",
> > - mc->name);
> > - return;
> > - }
> > -
> > - bus = pcms->bus;
> > x86_iommu->type = TYPE_INTEL;
> >
> > if (!vtd_decide_config(s, errp)) {
> > diff --git a/hw/i386/x86-iommu.c b/hw/i386/x86-iommu.c
> > index 293caf8..4d17e1f 100644
> > --- a/hw/i386/x86-iommu.c
> > +++ b/hw/i386/x86-iommu.c
> > @@ -21,6 +21,8 @@
> > #include "hw/sysbus.h"
> > #include "hw/boards.h"
> > #include "hw/i386/x86-iommu.h"
> > +#include "hw/i386/pc.h"
> > +#include "qapi/error.h"
> > #include "qemu/error-report.h"
> > #include "trace.h"
> >
> > @@ -80,7 +82,18 @@ static void x86_iommu_realize(DeviceState *dev, Error
> > **errp)
> > {
> > X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(dev);
> > X86IOMMUClass *x86_class = X86_IOMMU_GET_CLASS(dev);
> > + MachineState *ms = MACHINE(qdev_get_machine());
> > + MachineClass *mc = MACHINE_GET_CLASS(ms);
> > + PCMachineState *pcms =
> > + PC_MACHINE(object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE));
> > QLIST_INIT(&x86_iommu->iec_notifiers);
> > +
> > + if (!pcms) {
> > + error_setg(errp, "Machine-type '%s' not supported by iommu",
>
> When moving it, maybe also fix the English? :)
>
> "Machine-type '%s' does not support IOMMU."
I was wrong. I changed the correct thing into error. E.g., ppc64
obviously supports IOMMU... Please ignore my comment and just pick my
r-b. Sorry for the noise.
>
> Otherwise:
>
> Reviewed-by: Peter Xu <address@hidden>
>
> Thanks,
>
> > + mc->name);
> > + return;
> > + }
> > +
> > if (x86_class->realize) {
> > x86_class->realize(dev, errp);
> > }
> > --
> > 1.8.3.1
> >
>
> --
> Peter Xu
--
Peter Xu