netdev - [PATCH V6 5/5] vDPA/ifcvf: cacheline alignment for ifcvf

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Message-Id: <20220222115428.998334-6-lingshan.zhu@intel.com>
Date:   Tue, 22 Feb 2022 19:54:28 +0800
From:   Zhu Lingshan <lingshan.zhu@...el.com>
To:     mst@...hat.com, jasowang@...hat.com
Cc:     netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        Zhu Lingshan <lingshan.zhu@...el.com>
Subject: [PATCH V6 5/5] vDPA/ifcvf: cacheline alignment for ifcvf_hw

This commit introduces a new cacheline aligned layout for
ifcvf_hw.

Signed-off-by: Zhu Lingshan <lingshan.zhu@...el.com>
---
 drivers/vdpa/ifcvf/ifcvf_base.c |  4 ----
 drivers/vdpa/ifcvf/ifcvf_base.h | 10 +++++-----
 2 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/vdpa/ifcvf/ifcvf_base.c b/drivers/vdpa/ifcvf/ifcvf_base.c
index 8aba3ab4a2f3..48c4dadb0c7c 100644
--- a/drivers/vdpa/ifcvf/ifcvf_base.c
+++ b/drivers/vdpa/ifcvf/ifcvf_base.c
@@ -340,10 +340,8 @@ int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num)
 static int ifcvf_hw_enable(struct ifcvf_hw *hw)
 {
 	struct virtio_pci_common_cfg __iomem *cfg;
-	struct ifcvf_adapter *ifcvf;
 	u32 i;
 
-	ifcvf = vf_to_adapter(hw);
 	cfg = hw->common_cfg;
 	for (i = 0; i < hw->nr_vring; i++) {
 		if (!hw->vring[i].ready)
@@ -366,10 +364,8 @@ static int ifcvf_hw_enable(struct ifcvf_hw *hw)
 
 static void ifcvf_hw_disable(struct ifcvf_hw *hw)
 {
-	struct virtio_pci_common_cfg __iomem *cfg;
 	u32 i;
 
-	cfg = hw->common_cfg;
 	ifcvf_set_config_vector(hw, VIRTIO_MSI_NO_VECTOR);
 	for (i = 0; i < hw->nr_vring; i++) {
 		ifcvf_set_vq_vector(hw, i, VIRTIO_MSI_NO_VECTOR);
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.h b/drivers/vdpa/ifcvf/ifcvf_base.h
index dcd31accfce5..115b61f4924b 100644
--- a/drivers/vdpa/ifcvf/ifcvf_base.h
+++ b/drivers/vdpa/ifcvf/ifcvf_base.h
@@ -66,16 +66,18 @@ struct ifcvf_hw {
 	u8 __iomem *isr;
 	/* Live migration */
 	u8 __iomem *lm_cfg;
-	u16 nr_vring;
 	/* Notification bar number */
 	u8 notify_bar;
+	u8 msix_vector_status;
+	/* virtio-net or virtio-blk device config size */
+	u32 config_size;
 	/* Notificaiton bar address */
 	void __iomem *notify_base;
 	phys_addr_t notify_base_pa;
 	u32 notify_off_multiplier;
+	u32 dev_type;
 	u64 req_features;
 	u64 hw_features;
-	u32 dev_type;
 	struct virtio_pci_common_cfg __iomem *common_cfg;
 	void __iomem *dev_cfg;
 	struct vring_info vring[IFCVF_MAX_QUEUES];
@@ -84,9 +86,7 @@ struct ifcvf_hw {
 	struct vdpa_callback config_cb;
 	int config_irq;
 	int vqs_reused_irq;
-	/* virtio-net or virtio-blk device config size */
-	u32 config_size;
-	u8 msix_vector_status;
+	u16 nr_vring;
 };
 
 struct ifcvf_adapter {
-- 
2.27.0