On 14/06/2021 15:57, Robin Murphy wrote:
Consolidating the flush queue logic also meant that the "iommu.strict" option started taking effect on x86 as well. Make sure we document that.Fixes: a250c23f15c2 ("iommu: remove DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE") Signed-off-by: Robin Murphy <[email protected]>
I assumed that all bets were off when we use a cmdline param which is not "officially" supported.
Anyway, FWIW: Reviewed-by: John Garry <[email protected]>
--- Documentation/admin-guide/kernel-parameters.txt | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index cb89dbdedc46..20a32de990ed 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1987,7 +1987,7 @@ forcing Dual Address Cycle for PCI cards supporting greater than 32-bit addressing.- iommu.strict= [ARM64] Configure TLB invalidation behaviour+ iommu.strict= [ARM64, X86] Configure TLB invalidation behaviour Format: { "0" | "1" } 0 - Lazy mode. Request that DMA unmap operations use deferred
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