Re: [RFC PATCH 11/11] x86/MSI: Refactor x86 MSI code

From: Yijing Wang
Date: Wed Aug 20 2014 - 03:02:07 EST

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In reply to: Bharat.Bhushan@xxxxxxxxxxxxx: "RE: [RFC PATCH 11/11] x86/MSI: Refactor x86 MSI code"
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On 2014/8/20 14:20, Bharat.Bhushan@xxxxxxxxxxxxx wrote:
>
>
>> -----Original Message-----
>> From: linux-pci-owner@xxxxxxxxxxxxxxx [mailto:linux-pci-owner@xxxxxxxxxxxxxxx]
>> On Behalf Of Yijing Wang
>> Sent: Saturday, July 26, 2014 8:39 AM
>> To: linux-kernel@xxxxxxxxxxxxxxx
>> Cc: Xinwei Hu; Wuyun; Bjorn Helgaas; linux-pci@xxxxxxxxxxxxxxx;
>> Paul.Mundt@xxxxxxxxxx; James E.J. Bottomley; Marc Zyngier; linux-arm-
>> kernel@xxxxxxxxxxxxxxxxxxx; Russell King; linux-arch@xxxxxxxxxxxxxxx; Basu
>> Arnab-B45036; virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx; Hanjun Guo; Yijing Wang
>> Subject: [RFC PATCH 11/11] x86/MSI: Refactor x86 MSI code
>
> Please provide description about what this refactoring is? Also does other architecture also need similar refactoring ?

Sorry, I will update all description in my new proposal.

I provided another patchset to decouple MSI driver and arch MSI code,
link: http://marc.info/?l=linux-pci&m=140782732604433&w=2

Based that, there are few changes related to arch MSI code.

I will rebas the patchset based that~

>
> Thanks
> -Bharat
>
>>
>> Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
>> ---
>> arch/x86/include/asm/io_apic.h | 2 +-
>> arch/x86/include/asm/irq_remapping.h | 4 +-
>> arch/x86/include/asm/pci.h | 6 ++--
>> arch/x86/include/asm/x86_init.h | 10 +++---
>> arch/x86/kernel/apic/io_apic.c | 23 +++++++--------
>> arch/x86/kernel/x86_init.c | 12 ++++----
>> drivers/iommu/amd_iommu.c | 16 ++++++----
>> drivers/iommu/intel_irq_remapping.c | 9 ++++--
>> drivers/iommu/irq_remapping.c | 51 ++++++++++++++++-----------------
>> drivers/iommu/irq_remapping.h | 6 ++--
>> drivers/msi/msi.c | 3 +-
>> 11 files changed, 72 insertions(+), 70 deletions(-)
>>
>> diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
>> index 90f97b4..692a90f 100644
>> --- a/arch/x86/include/asm/io_apic.h
>> +++ b/arch/x86/include/asm/io_apic.h
>> @@ -158,7 +158,7 @@ extern int native_setup_ioapic_entry(int, struct
>> IO_APIC_route_entry *,
>> struct io_apic_irq_attr *);
>> extern void eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg);
>>
>> -extern void native_compose_msi_msg(struct pci_dev *pdev,
>> +extern void native_compose_msi_msg(struct msi_irqs *msi,
>> unsigned int irq, unsigned int dest,
>> struct msi_msg *msg, u8 hpet_id);
>> extern void native_eoi_ioapic_pin(int apic, int pin, int vector);
>> diff --git a/arch/x86/include/asm/irq_remapping.h
>> b/arch/x86/include/asm/irq_remapping.h
>> index b7747c4..a10003d 100644
>> --- a/arch/x86/include/asm/irq_remapping.h
>> +++ b/arch/x86/include/asm/irq_remapping.h
>> @@ -47,7 +47,7 @@ extern int setup_ioapic_remapped_entry(int irq,
>> int vector,
>> struct io_apic_irq_attr *attr);
>> extern void free_remapped_irq(int irq);
>> -extern void compose_remapped_msi_msg(struct pci_dev *pdev,
>> +extern void compose_remapped_msi_msg(struct msi_irqs *msi,
>> unsigned int irq, unsigned int dest,
>> struct msi_msg *msg, u8 hpet_id);
>> extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
>> @@ -77,7 +77,7 @@ static inline int setup_ioapic_remapped_entry(int irq,
>> return -ENODEV;
>> }
>> static inline void free_remapped_irq(int irq) { }
>> -static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
>> +static inline void compose_remapped_msi_msg(struct msi_irqs *msi,
>> unsigned int irq, unsigned int dest,
>> struct msi_msg *msg, u8 hpet_id)
>> {
>> diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
>> index 0892ea0..04c9ef6 100644
>> --- a/arch/x86/include/asm/pci.h
>> +++ b/arch/x86/include/asm/pci.h
>> @@ -96,10 +96,10 @@ extern void pci_iommu_alloc(void);
>> #ifdef CONFIG_PCI_MSI
>> /* implemented in arch/x86/kernel/apic/io_apic. */
>> struct msi_desc;
>> -int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
>> +int native_setup_msi_irqs(struct msi_irqs *msi, int nvec, int type);
>> void native_teardown_msi_irq(unsigned int irq);
>> -void native_restore_msi_irqs(struct pci_dev *dev);
>> -int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
>> +void native_restore_msi_irqs(struct msi_irqs *msi);
>> +int setup_msi_irq(struct msi_irqs *msi, struct msi_desc *msidesc,
>> unsigned int irq_base, unsigned int irq_offset);
>> #else
>> #define native_setup_msi_irqs NULL
>> diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
>> index e45e4da..8e42f17 100644
>> --- a/arch/x86/include/asm/x86_init.h
>> +++ b/arch/x86/include/asm/x86_init.h
>> @@ -170,18 +170,18 @@ struct x86_platform_ops {
>> void (*apic_post_init)(void);
>> };
>>
>> -struct pci_dev;
>> +struct msi_irqs;
>> struct msi_msg;
>> struct msi_desc;
>>
>> struct x86_msi_ops {
>> - int (*setup_msi_irqs)(struct pci_dev *dev, int nvec, int type);
>> - void (*compose_msi_msg)(struct pci_dev *dev, unsigned int irq,
>> + int (*setup_msi_irqs)(struct msi_irqs *msi, int nvec, int type);
>> + void (*compose_msi_msg)(struct msi_irqs *msi, unsigned int irq,
>> unsigned int dest, struct msi_msg *msg,
>> u8 hpet_id);
>> void (*teardown_msi_irq)(unsigned int irq);
>> - void (*teardown_msi_irqs)(struct pci_dev *dev);
>> - void (*restore_msi_irqs)(struct pci_dev *dev);
>> + void (*teardown_msi_irqs)(struct msi_irqs *msi);
>> + void (*restore_msi_irqs)(struct msi_irqs *msi);
>> int (*setup_hpet_msi)(unsigned int irq, unsigned int id);
>> u32 (*msi_mask_irq)(struct msi_desc *desc, u32 mask, u32 flag);
>> u32 (*msix_mask_irq)(struct msi_desc *desc, u32 flag);
>> diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
>> index b833042..3cb4a6a 100644
>> --- a/arch/x86/kernel/apic/io_apic.c
>> +++ b/arch/x86/kernel/apic/io_apic.c
>> @@ -2939,7 +2939,7 @@ void arch_teardown_hwirq(unsigned int irq)
>> /*
>> * MSI message composition
>> */
>> -void native_compose_msi_msg(struct pci_dev *pdev,
>> +void native_compose_msi_msg(struct msi_irqs *msi,
>> unsigned int irq, unsigned int dest,
>> struct msi_msg *msg, u8 hpet_id)
>> {
>> @@ -2970,7 +2970,7 @@ void native_compose_msi_msg(struct pci_dev *pdev,
>> }
>>
>> #ifdef CONFIG_PCI_MSI
>> -static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq,
>> +static int msi_compose_msg(struct msi_irqs *msi, unsigned int irq,
>> struct msi_msg *msg, u8 hpet_id)
>> {
>> struct irq_cfg *cfg;
>> @@ -2990,7 +2990,7 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned
>> int irq,
>> if (err)
>> return err;
>>
>> - x86_msi.compose_msi_msg(pdev, irq, dest, msg, hpet_id);
>> + x86_msi.compose_msi_msg(msi, irq, dest, msg, hpet_id);
>>
>> return 0;
>> }
>> @@ -3032,15 +3032,16 @@ static struct irq_chip msi_chip = {
>> .irq_retrigger = ioapic_retrigger_irq,
>> };
>>
>> -int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
>> +int setup_msi_irq(struct msi_irqs *msi, struct msi_desc *msidesc,
>> unsigned int irq_base, unsigned int irq_offset)
>> {
>> struct irq_chip *chip = &msi_chip;
>> struct msi_msg msg;
>> unsigned int irq = irq_base + irq_offset;
>> int ret;
>> + struct pci_dev *dev = msi->data;
>>
>> - ret = msi_compose_msg(dev, irq, &msg, -1);
>> + ret = msi_compose_msg(msi, irq, &msg, -1);
>> if (ret < 0)
>> return ret;
>>
>> @@ -3062,24 +3063,22 @@ int setup_msi_irq(struct pci_dev *dev, struct msi_desc
>> *msidesc,
>> return 0;
>> }
>>
>> -int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
>> +int native_setup_msi_irqs(struct msi_irqs *msi, int nvec, int type)
>> {
>> struct msi_desc *msidesc;
>> unsigned int irq;
>> - int node, ret;
>> + int ret;
>>
>> /* Multiple MSI vectors only supported with interrupt remapping */
>> if (type == MSI_TYPE && nvec > 1)
>> return 1;
>>
>> - node = dev_to_node(&dev->dev);
>> -
>> - list_for_each_entry(msidesc, &dev->msi_list, list) {
>> - irq = irq_alloc_hwirq(node);
>> + list_for_each_entry(msidesc, &msi->msi_list, list) {
>> + irq = irq_alloc_hwirq(msi->node);
>> if (!irq)
>> return -ENOSPC;
>>
>> - ret = setup_msi_irq(dev, msidesc, irq, 0);
>> + ret = setup_msi_irq(msi, msidesc, irq, 0);
>> if (ret < 0) {
>> irq_free_hwirq(irq);
>> return ret;
>> diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
>> index e48b674..a277faf 100644
>> --- a/arch/x86/kernel/x86_init.c
>> +++ b/arch/x86/kernel/x86_init.c
>> @@ -121,14 +121,14 @@ struct x86_msi_ops x86_msi = {
>> };
>>
>> /* MSI arch specific hooks */
>> -int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
>> +int arch_setup_msi_irqs(struct msi_irqs *msi, int nvec, int type)
>> {
>> - return x86_msi.setup_msi_irqs(dev, nvec, type);
>> + return x86_msi.setup_msi_irqs(msi, nvec, type);
>> }
>>
>> -void arch_teardown_msi_irqs(struct pci_dev *dev)
>> +void arch_teardown_msi_irqs(struct msi_irqs *msi)
>> {
>> - x86_msi.teardown_msi_irqs(dev);
>> + x86_msi.teardown_msi_irqs(msi);
>> }
>>
>> void arch_teardown_msi_irq(unsigned int irq)
>> @@ -136,9 +136,9 @@ void arch_teardown_msi_irq(unsigned int irq)
>> x86_msi.teardown_msi_irq(irq);
>> }
>>
>> -void arch_restore_msi_irqs(struct pci_dev *dev)
>> +void arch_restore_msi_irqs(struct msi_irqs *msi)
>> {
>> - x86_msi.restore_msi_irqs(dev);
>> + x86_msi.restore_msi_irqs(msi);
>> }
>> u32 arch_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
>> {
>> diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
>> index 4aec6a2..0e45cb7 100644
>> --- a/drivers/iommu/amd_iommu.c
>> +++ b/drivers/iommu/amd_iommu.c
>> @@ -4237,7 +4237,7 @@ static int free_irq(int irq)
>> return 0;
>> }
>>
>> -static void compose_msi_msg(struct pci_dev *pdev,
>> +static void compose_msi_msg(struct msi_irqs *msi,
>> unsigned int irq, unsigned int dest,
>> struct msi_msg *msg, u8 hpet_id)
>> {
>> @@ -4265,33 +4265,35 @@ static void compose_msi_msg(struct pci_dev *pdev,
>> msg->data = irte_info->index;
>> }
>>
>> -static int msi_alloc_irq(struct pci_dev *pdev, int irq, int nvec)
>> +static int msi_alloc_irq(struct msi_irqs *msi, int irq, int nvec)
>> {
>> struct irq_cfg *cfg;
>> int index;
>> u16 devid;
>> + struct pci_dev *dev = msi->data;
>>
>> - if (!pdev)
>> + if (!dev)
>> return -EINVAL;
>>
>> cfg = irq_get_chip_data(irq);
>> if (!cfg)
>> return -EINVAL;
>>
>> - devid = get_device_id(&pdev->dev);
>> + devid = get_device_id(&dev->dev);
>> index = alloc_irq_index(cfg, devid, nvec);
>>
>> return index < 0 ? MAX_IRQS_PER_TABLE : index;
>> }
>>
>> -static int msi_setup_irq(struct pci_dev *pdev, unsigned int irq,
>> +static int msi_setup_irq(struct msi_irqs *msi, unsigned int irq,
>> int index, int offset)
>> {
>> struct irq_2_irte *irte_info;
>> struct irq_cfg *cfg;
>> u16 devid;
>> + struct pci_dev *dev = msi->data;
>>
>> - if (!pdev)
>> + if (!dev)
>> return -EINVAL;
>>
>> cfg = irq_get_chip_data(irq);
>> @@ -4301,7 +4303,7 @@ static int msi_setup_irq(struct pci_dev *pdev, unsigned
>> int irq,
>> if (index >= MAX_IRQS_PER_TABLE)
>> return 0;
>>
>> - devid = get_device_id(&pdev->dev);
>> + devid = get_device_id(&dev->dev);
>> irte_info = &cfg->irq_2_irte;
>>
>> cfg->remapped = 1;
>> diff --git a/drivers/iommu/intel_irq_remapping.c
>> b/drivers/iommu/intel_irq_remapping.c
>> index 9b17489..d6bde63 100644
>> --- a/drivers/iommu/intel_irq_remapping.c
>> +++ b/drivers/iommu/intel_irq_remapping.c
>> @@ -1027,7 +1027,7 @@ intel_ioapic_set_affinity(struct irq_data *data, const
>> struct cpumask *mask,
>> return 0;
>> }
>>
>> -static void intel_compose_msi_msg(struct pci_dev *pdev,
>> +static void intel_compose_msi_msg(struct msi_irqs *msi,
>> unsigned int irq, unsigned int dest,
>> struct msi_msg *msg, u8 hpet_id)
>> {
>> @@ -1035,6 +1035,7 @@ static void intel_compose_msi_msg(struct pci_dev *pdev,
>> struct irte irte;
>> u16 sub_handle = 0;
>> int ir_index;
>> + struct pci_dev *pdev = msi->data;
>>
>> cfg = irq_get_chip_data(irq);
>>
>> @@ -1064,10 +1065,11 @@ static void intel_compose_msi_msg(struct pci_dev *pdev,
>> * and allocate 'nvec' consecutive interrupt-remapping table entries
>> * in it.
>> */
>> -static int intel_msi_alloc_irq(struct pci_dev *dev, int irq, int nvec)
>> +static int intel_msi_alloc_irq(struct msi_irqs *msi, int irq, int nvec)
>> {
>> struct intel_iommu *iommu;
>> int index;
>> + struct pci_dev *dev = msi->data;
>>
>> down_read(&dmar_global_lock);
>> iommu = map_dev_to_ir(dev);
>> @@ -1089,11 +1091,12 @@ static int intel_msi_alloc_irq(struct pci_dev *dev, int
>> irq, int nvec)
>> return index;
>> }
>>
>> -static int intel_msi_setup_irq(struct pci_dev *pdev, unsigned int irq,
>> +static int intel_msi_setup_irq(struct msi_irqs *msi, unsigned int irq,
>> int index, int sub_handle)
>> {
>> struct intel_iommu *iommu;
>> int ret = -ENOENT;
>> + struct pci_dev *pdev = msi->data;
>>
>> down_read(&dmar_global_lock);
>> iommu = map_dev_to_ir(pdev);
>> diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
>> index a3b1805..1fe14e5 100644
>> --- a/drivers/iommu/irq_remapping.c
>> +++ b/drivers/iommu/irq_remapping.c
>> @@ -24,8 +24,8 @@ int no_x2apic_optout;
>>
>> static struct irq_remap_ops *remap_ops;
>>
>> -static int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec);
>> -static int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
>> +static int msi_alloc_remapped_irq(struct msi_irqs *msi, int irq, int nvec);
>> +static int msi_setup_remapped_irq(struct msi_irqs *msi, unsigned int irq,
>> int index, int sub_handle);
>> static int set_remapped_irq_affinity(struct irq_data *data,
>> const struct cpumask *mask,
>> @@ -49,19 +49,19 @@ static void irq_remapping_disable_io_apic(void)
>> disconnect_bsp_APIC(0);
>> }
>>
>> -static int do_setup_msi_irqs(struct pci_dev *dev, int nvec)
>> +static int do_setup_msi_irqs(struct msi_irqs *msi, int nvec)
>> {
>> int ret, sub_handle, nvec_pow2, index = 0;
>> unsigned int irq;
>> struct msi_desc *msidesc;
>>
>> - WARN_ON(!list_is_singular(&dev->msi_list));
>> - msidesc = list_entry(dev->msi_list.next, struct msi_desc, list);
>> + WARN_ON(!list_is_singular(&msi->msi_list));
>> + msidesc = list_entry(msi->msi_list.next, struct msi_desc, list);
>> WARN_ON(msidesc->irq);
>> WARN_ON(msidesc->msi_attrib.multiple);
>> WARN_ON(msidesc->nvec_used);
>>
>> - irq = irq_alloc_hwirqs(nvec, dev_to_node(&dev->dev));
>> + irq = irq_alloc_hwirqs(nvec, msi->node);
>> if (irq == 0)
>> return -ENOSPC;
>>
>> @@ -70,18 +70,18 @@ static int do_setup_msi_irqs(struct pci_dev *dev, int nvec)
>> msidesc->msi_attrib.multiple = ilog2(nvec_pow2);
>> for (sub_handle = 0; sub_handle < nvec; sub_handle++) {
>> if (!sub_handle) {
>> - index = msi_alloc_remapped_irq(dev, irq, nvec_pow2);
>> + index = msi_alloc_remapped_irq(msi, irq, nvec_pow2);
>> if (index < 0) {
>> ret = index;
>> goto error;
>> }
>> } else {
>> - ret = msi_setup_remapped_irq(dev, irq + sub_handle,
>> + ret = msi_setup_remapped_irq(msi, irq + sub_handle,
>> index, sub_handle);
>> if (ret < 0)
>> goto error;
>> }
>> - ret = setup_msi_irq(dev, msidesc, irq, sub_handle);
>> + ret = setup_msi_irq(msi, msidesc, irq, sub_handle);
>> if (ret < 0)
>> goto error;
>> }
>> @@ -101,30 +101,29 @@ error:
>> return ret;
>> }
>>
>> -static int do_setup_msix_irqs(struct pci_dev *dev, int nvec)
>> +static int do_setup_msix_irqs(struct msi_irqs *msi, int nvec)
>> {
>> int node, ret, sub_handle, index = 0;
>> struct msi_desc *msidesc;
>> unsigned int irq;
>>
>> - node = dev_to_node(&dev->dev);
>> sub_handle = 0;
>>
>> - list_for_each_entry(msidesc, &dev->msi_list, list) {
>> + list_for_each_entry(msidesc, &msi->msi_list, list) {
>>
>> - irq = irq_alloc_hwirq(node);
>> + irq = irq_alloc_hwirq(msi->node);
>> if (irq == 0)
>> return -1;
>>
>> if (sub_handle == 0)
>> - ret = index = msi_alloc_remapped_irq(dev, irq, nvec);
>> + ret = index = msi_alloc_remapped_irq(msi, irq, nvec);
>> else
>> - ret = msi_setup_remapped_irq(dev, irq, index, sub_handle);
>> + ret = msi_setup_remapped_irq(msi, irq, index, sub_handle);
>>
>> if (ret < 0)
>> goto error;
>>
>> - ret = setup_msi_irq(dev, msidesc, irq, 0);
>> + ret = setup_msi_irq(msi, msidesc, irq, 0);
>> if (ret < 0)
>> goto error;
>>
>> @@ -139,13 +138,13 @@ error:
>> return ret;
>> }
>>
>> -static int irq_remapping_setup_msi_irqs(struct pci_dev *dev,
>> +static int irq_remapping_setup_msi_irqs(struct msi_irqs *msi,
>> int nvec, int type)
>> {
>> if (type == MSI_TYPE)
>> - return do_setup_msi_irqs(dev, nvec);
>> + return do_setup_msi_irqs(msi, nvec);
>> else
>> - return do_setup_msix_irqs(dev, nvec);
>> + return do_setup_msix_irqs(msi, nvec);
>> }
>>
>> static void eoi_ioapic_pin_remapped(int apic, int pin, int vector)
>> @@ -314,33 +313,33 @@ void free_remapped_irq(int irq)
>> remap_ops->free_irq(irq);
>> }
>>
>> -void compose_remapped_msi_msg(struct pci_dev *pdev,
>> +void compose_remapped_msi_msg(struct msi_irqs *msi,
>> unsigned int irq, unsigned int dest,
>> struct msi_msg *msg, u8 hpet_id)
>> {
>> struct irq_cfg *cfg = irq_get_chip_data(irq);
>>
>> if (!irq_remapped(cfg))
>> - native_compose_msi_msg(pdev, irq, dest, msg, hpet_id);
>> + native_compose_msi_msg(msi, irq, dest, msg, hpet_id);
>> else if (remap_ops && remap_ops->compose_msi_msg)
>> - remap_ops->compose_msi_msg(pdev, irq, dest, msg, hpet_id);
>> + remap_ops->compose_msi_msg(msi, irq, dest, msg, hpet_id);
>> }
>>
>> -static int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec)
>> +static int msi_alloc_remapped_irq(struct msi_irqs *msi, int irq, int nvec)
>> {
>> if (!remap_ops || !remap_ops->msi_alloc_irq)
>> return -ENODEV;
>>
>> - return remap_ops->msi_alloc_irq(pdev, irq, nvec);
>> + return remap_ops->msi_alloc_irq(msi, irq, nvec);
>> }
>>
>> -static int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
>> +static int msi_setup_remapped_irq(struct msi_irqs *msi, unsigned int irq,
>> int index, int sub_handle)
>> {
>> if (!remap_ops || !remap_ops->msi_setup_irq)
>> return -ENODEV;
>>
>> - return remap_ops->msi_setup_irq(pdev, irq, index, sub_handle);
>> + return remap_ops->msi_setup_irq(msi, irq, index, sub_handle);
>> }
>>
>> int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
>> diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h
>> index 90c4dae..59c4cfb 100644
>> --- a/drivers/iommu/irq_remapping.h
>> +++ b/drivers/iommu/irq_remapping.h
>> @@ -69,15 +69,15 @@ struct irq_remap_ops {
>> int (*free_irq)(int);
>>
>> /* Create MSI msg to use for interrupt remapping */
>> - void (*compose_msi_msg)(struct pci_dev *,
>> + void (*compose_msi_msg)(struct msi_irqs *,
>> unsigned int, unsigned int,
>> struct msi_msg *, u8);
>>
>> /* Allocate remapping resources for MSI */
>> - int (*msi_alloc_irq)(struct pci_dev *, int, int);
>> + int (*msi_alloc_irq)(struct msi_irqs *, int, int);
>>
>> /* Setup the remapped MSI irq */
>> - int (*msi_setup_irq)(struct pci_dev *, unsigned int, int, int);
>> + int (*msi_setup_irq)(struct msi_irqs *, unsigned int, int, int);
>>
>> /* Setup interrupt remapping for an HPET MSI */
>> int (*setup_hpet_msi)(unsigned int, unsigned int);
>> diff --git a/drivers/msi/msi.c b/drivers/msi/msi.c
>> index 3fbd539..8462c6c 100644
>> --- a/drivers/msi/msi.c
>> +++ b/drivers/msi/msi.c
>> @@ -510,9 +510,8 @@ int msix_capability_init(struct msi_irqs *msi, void __iomem
>> *base,
>>
>> /* Set MSI-X enabled bits and unmask the function */
>> msi_set_intx(msi, 0);
>> - msi->msix_enabled = 1;
>> -
>> msi_set_enable(msi, 1, MSIX_TYPE);
>> + msi->msix_enabled = 1;
>>
>> return 0;
>>
>> --
>> 1.7.1
>>
>> --
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--
Thanks!
Yijing

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