Merge git://git.infradead.org/iommu-2.6
* git://git.infradead.org/iommu-2.6: intel-iommu: Fix 32-bit build warning with __cmpxchg() intr-remap: allow disabling source id checking
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commit
e2e96c6636
@ -981,6 +981,12 @@ and is between 256 and 4096 characters. It is defined in the file
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result in a hardware IOTLB flush operation as opposed
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to batching them for performance.
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intremap= [X86-64, Intel-IOMMU]
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Format: { on (default) | off | nosid }
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on enable Interrupt Remapping (default)
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off disable Interrupt Remapping
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nosid disable Source ID checking
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inttest= [IA64]
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iomem= Disable strict checking of access to MMIO memory
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@ -1681,6 +1687,7 @@ and is between 256 and 4096 characters. It is defined in the file
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nointremap [X86-64, Intel-IOMMU] Do not enable interrupt
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remapping.
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[Deprecated - use intremap=off]
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nointroute [IA-64]
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@ -236,7 +236,7 @@ static inline u64 dma_pte_addr(struct dma_pte *pte)
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return pte->val & VTD_PAGE_MASK;
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#else
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/* Must have a full atomic 64-bit read */
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return __cmpxchg64(pte, 0ULL, 0ULL) & VTD_PAGE_MASK;
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return __cmpxchg64(&pte->val, 0ULL, 0ULL) & VTD_PAGE_MASK;
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#endif
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}
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@ -21,6 +21,8 @@ static int ir_ioapic_num, ir_hpet_num;
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int intr_remapping_enabled;
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static int disable_intremap;
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static int disable_sourceid_checking;
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static __init int setup_nointremap(char *str)
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{
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disable_intremap = 1;
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@ -28,6 +30,22 @@ static __init int setup_nointremap(char *str)
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}
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early_param("nointremap", setup_nointremap);
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static __init int setup_intremap(char *str)
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{
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if (!str)
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return -EINVAL;
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if (!strncmp(str, "on", 2))
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disable_intremap = 0;
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else if (!strncmp(str, "off", 3))
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disable_intremap = 1;
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else if (!strncmp(str, "nosid", 5))
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disable_sourceid_checking = 1;
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return 0;
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}
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early_param("intremap", setup_intremap);
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struct irq_2_iommu {
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struct intel_iommu *iommu;
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u16 irte_index;
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@ -453,6 +471,8 @@ int free_irte(int irq)
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static void set_irte_sid(struct irte *irte, unsigned int svt,
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unsigned int sq, unsigned int sid)
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{
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if (disable_sourceid_checking)
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svt = SVT_NO_VERIFY;
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irte->svt = svt;
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irte->sq = sq;
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irte->sid = sid;
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