hselasky 107bf62085 Avoid use of contiguous memory allocations in busdma when possible. ... This patch improves the boundary checks in busdma to allow more cases using the regular page based kernel memory allocator. Especially in the case of having a non-zero boundary in the parent DMA tag. For example AMD64 based platforms set the PCI DMA tag boundary to PCI_DMA_BOUNDARY, 4GB, which before this patch caused contiguous memory allocations to be preferred when allocating more than PAGE_SIZE bytes. Even if the required alignment was less than PAGE_SIZE bytes. This patch also fixes the nsegments check for using kmem_alloc_attr() when the maximum segment size is less than PAGE_SIZE bytes. Updated some comments describing the code in question. Differential Revision: https://reviews.freebsd.org/D10645 Reviewed by: kib, jhb, gallatin, scottl MFC after: 1 week Sponsored by: Mellanox Technologies		2017-05-16 14:21:37 +00:00
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acpica	Add support to find the arm64 serial using the ACPI tables. This uses the	2016-11-21 19:26:58 +00:00
arm64	Avoid use of contiguous memory allocations in busdma when possible.	2017-05-16 14:21:37 +00:00
cavium	If ofw_bus_msimap fails don't try to use the invalid MSI/MSI-X parent node.	2017-03-16 17:49:37 +00:00
cloudabi64	Stop providing the compat_3_brand.	2017-03-23 14:12:21 +00:00
conf	Add 'device iic' to bring in userland I2C driver.	2017-03-24 22:33:03 +00:00
include	Allocate a cacheline when reading or writing to write through memory. The	2017-05-13 13:03:20 +00:00