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| author | Thomas Klein <tklein@de.ibm.com> | 2008-10-27 10:38:46 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-10-27 19:49:55 +0100 |
| commit | 3fd09c45bfbcf77949ed6db36e67c1681424fedb (patch) | |
| tree | 73a5a3122c69c68489905c065e810abe9288e95c /drivers/net/ehea/ehea_qmr.h | |
| parent | dmfe: check pci_alloc_consistent errors (diff) | |
| download | linux-3fd09c45bfbcf77949ed6db36e67c1681424fedb.tar.xz linux-3fd09c45bfbcf77949ed6db36e67c1681424fedb.zip | |
ehea: Detect 16GB hugepages for firmware restriction
All kernel memory which is used for kernel/hardware data transfer must
be registered with firmware using "memory regions". 16GB hugepages
may not be part of a memory region due to firmware restrictions.
This patch modifies the walk_memory_resource callback fn to filter
hugepages and add only standard memory to the busmap which is later
on used for MR registration.
Signed-off-by: Thomas Klein <tklein@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/ehea/ehea_qmr.h')
| -rw-r--r-- | drivers/net/ehea/ehea_qmr.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ehea/ehea_qmr.h b/drivers/net/ehea/ehea_qmr.h index 1e58dc06b7d2..0817c1e74a19 100644 --- a/drivers/net/ehea/ehea_qmr.h +++ b/drivers/net/ehea/ehea_qmr.h @@ -40,6 +40,9 @@ #define EHEA_PAGESIZE (1UL << EHEA_PAGESHIFT) #define EHEA_SECTSIZE (1UL << 24) #define EHEA_PAGES_PER_SECTION (EHEA_SECTSIZE >> EHEA_PAGESHIFT) +#define EHEA_HUGEPAGESHIFT 34 +#define EHEA_HUGEPAGE_SIZE (1UL << EHEA_HUGEPAGESHIFT) +#define EHEA_HUGEPAGE_PFN_MASK ((EHEA_HUGEPAGE_SIZE - 1) >> PAGE_SHIFT) #if ((1UL << SECTION_SIZE_BITS) < EHEA_SECTSIZE) #error eHEA module cannot work if kernel sectionsize < ehea sectionsize |