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| author | David S. Miller <davem@davemloft.net> | 2005-06-01 03:57:59 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-06-01 03:57:59 +0400 |
| commit | 7c963ad1d113790a8c723a178988b675868f3abe (patch) | |
| tree | 2e1cc54795aeca06a11801636737901ba71a2ed8 /arch/sparc64/kernel/pci_schizo.c | |
| parent | 2e3e80c2b75e3815a0160cbd23d4fdb767d66b35 (diff) | |
| download | linux-7c963ad1d113790a8c723a178988b675868f3abe.tar.xz | |
[SPARC64]: Fix streaming buffer flushing on PCI and SBUS.
Firstly, if the direction is TODEVICE, then dirty data in the
streaming cache is impossible so we can elide the flush-flag
synchronization in that case.
Next, the context allocator is broken. It is highly likely
that contexts get used multiple times for different dma
mappings, which confuses the strbuf flushing code and makes
it run inefficiently.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/pci_schizo.c')
| -rw-r--r-- | arch/sparc64/kernel/pci_schizo.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc64/kernel/pci_schizo.c b/arch/sparc64/kernel/pci_schizo.c index e93fcadc3722..5753175b94e6 100644 --- a/arch/sparc64/kernel/pci_schizo.c +++ b/arch/sparc64/kernel/pci_schizo.c @@ -1753,7 +1753,7 @@ static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm) /* Setup initial software IOMMU state. */ spin_lock_init(&iommu->lock); - iommu->iommu_cur_ctx = 0; + iommu->ctx_lowest_free = 1; /* Register addresses, SCHIZO has iommu ctx flushing. */ iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL; |