RE: [PATCH] iommu/io-pgtable-arm: Optimize partial walk flush for large scatter-gather list
From: Krishna Reddy <vdumpa@nvidia.com>
Date: 2021-06-17 21:18:39
Also in:
linux-arm-msm, linux-iommu, lkml
Instead of flush_ops in init_context hook, perhaps a io_pgtable quirk since this is
related to tlb, probably a bad name but IO_PGTABLE_QUIRK_TLB_INV which will
be set in init_context impl hook and the prev condition in
io_pgtable_tlb_flush_walk()
becomes something like below. Seems very minimal and neat instead of poking
into tlb_flush_walk functions or touching dma strict with some flag?
if (iop->cfg.quirks & IO_PGTABLE_QUIRK_NON_STRICT ||
iop->cfg.quirks & IO_PGTABLE_QUIRK_TLB_INV) {
iop->cfg.tlb->tlb_flush_all(iop->cookie);
return;
}Can you name it as IO_PGTABLE_QUIRK_TLB_INV_ASID or IO_PGTABLE_QUIRK_TLB_INV_ALL_ASID? -KR _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel