From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boris Ostrovsky Date: Wed, 02 Mar 2022 13:17:52 +0000 Subject: Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb Message-Id: List-Id: References: <20220301105311.885699-1-hch@lst.de> <20220301105311.885699-12-hch@lst.de> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit To: Stefano Stabellini , Christoph Hellwig Cc: iommu@lists.linux-foundation.org, x86@kernel.org, Anshuman Khandual , Tom Lendacky , Konrad Rzeszutek Wilk , Juergen Gross , Joerg Roedel , David Woodhouse , Lu Baolu , Robin Murphy , linux-arm-kernel@lists.infradead.org, xen-devel@lists.xenproject.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-hyperv@vger.kernel.org, tboot-devel@lists.sourceforge.net, linux-pci@vger.kernel.org On 3/2/22 8:15 AM, Boris Ostrovsky wrote: > > > On 3/1/22 9:55 PM, Stefano Stabellini wrote: >> On Tue, 1 Mar 2022, Christoph Hellwig wrote: >>> Allow to pass a remap argument to the swiotlb initialization functions >>> to handle the Xen/x86 remap case.  ARM/ARM64 never did any remapping >>> from xen_swiotlb_fixup, so we don't even need that quirk. >>> > >> Aside from that the rest looks OK. Also, you can add my: >> >> Tested-by: Stefano Stabellini > > > Not for me, I fail to boot with > > [   52.202000] bnxt_en 0000:31:00.0: swiotlb buffer is full (sz: 256 bytes), total 0 (slots), used 0 (slots) > > (this is iscsi root so I need the NIC). > > > I bisected it to "x86: remove the IOMMU table infrastructure" but haven't actually looked at the code yet. > Again, this is as dom0. Baremetal is fine. -boris