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AMD IOMMU: struct amd_iommu remove padding on 64 bit

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Remove 16 bytes of padding from struct amd_iommu on 64bit builds
reducing its size to 120 bytes, allowing it to span one fewer
cachelines.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Richard Kennedy
2008-11-24 13:53:24 +00:00
committed by Joerg Roedel
parent 061e41fdb5
commit eac9fbc6a9
1 changed files with 12 additions and 12 deletions
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24
arch/x86/include/asm/amd_iommu_types.h
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@@ -251,13 +251,6 @@ struct amd_iommu {
/* Pointer to PCI device of this IOMMU */ /* Pointer to PCI device of this IOMMU */
struct pci_dev *dev; struct pci_dev *dev;
/*
* Capability pointer. There could be more than one IOMMU per PCI
* device function if there are more than one AMD IOMMU capability
* pointers.
*/
u16 cap_ptr;
/* physical address of MMIO space */ /* physical address of MMIO space */
u64 mmio_phys; u64 mmio_phys;
/* virtual address of MMIO space */ /* virtual address of MMIO space */
@@ -266,6 +259,13 @@ struct amd_iommu {
/* capabilities of that IOMMU read from ACPI */ /* capabilities of that IOMMU read from ACPI */
u32 cap; u32 cap;
/*
* Capability pointer. There could be more than one IOMMU per PCI
* device function if there are more than one AMD IOMMU capability
* pointers.
*/
u16 cap_ptr;
/* pci domain of this IOMMU */ /* pci domain of this IOMMU */
u16 pci_seg; u16 pci_seg;
@@ -284,19 +284,19 @@ struct amd_iommu {
/* size of command buffer */ /* size of command buffer */
u32 cmd_buf_size; u32 cmd_buf_size;
/* event buffer virtual address */
u8 *evt_buf;
/* size of event buffer */ /* size of event buffer */
u32 evt_buf_size; u32 evt_buf_size;
/* event buffer virtual address */
u8 *evt_buf;
/* MSI number for event interrupt */ /* MSI number for event interrupt */
u16 evt_msi_num; u16 evt_msi_num;
/* if one, we need to send a completion wait command */
int need_sync;
/* true if interrupts for this IOMMU are already enabled */ /* true if interrupts for this IOMMU are already enabled */
bool int_enabled; bool int_enabled;
/* if one, we need to send a completion wait command */
int need_sync;
/* default dma_ops domain for that IOMMU */ /* default dma_ops domain for that IOMMU */
struct dma_ops_domain *default_dom; struct dma_ops_domain *default_dom;
}; };