From: Tianyu Lan <ltykernel@gmail.com> To: Christoph Hellwig <hch@lst.de> Cc: dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, jgross@suse.com, sstabellini@kernel.org, boris.ostrovsky@oracle.com, kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, joro@8bytes.org, will@kernel.org, davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com, m.szyprowski@samsung.com, robin.murphy@arm.com, xen-devel@lists.xenproject.org, michael.h.kelley@microsoft.com, Tianyu Lan <Tianyu.Lan@microsoft.com>, iommu@lists.linux-foundation.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, vkuznets@redhat.com, brijesh.singh@amd.com, konrad.wilk@oracle.com, parri.andrea@gmail.com, thomas.lendacky@amd.com, dave.hansen@intel.com Subject: Re: [PATCH 1/5] x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM Date: Wed, 17 Nov 2021 21:32:13 +0800 [thread overview] Message-ID: <0ab42ae0-9323-9297-c2c8-1cfc1ebada08@gmail.com> (raw) In-Reply-To: <20211117095953.GA10330@lst.de> Hi Christoph: Thanks for your review. On 11/17/2021 5:59 PM, Christoph Hellwig wrote: > The subject is wrong, nothing x86-specific here. Please use > "swiotlb: " as the prefix OK. Will update. Thanks. > >> + * @vaddr: The vaddr of the swiotlb memory pool. The swiotlb >> + * memory pool may be remapped in the memory encrypted case and store > > Please avoid the overly long line. > >> + /* >> + * With swiotlb_unencrypted_base setting, swiotlb bounce buffer will >> + * be remapped in the swiotlb_update_mem_attributes() and return here >> + * directly. >> + */ > > I'd word this as: > > /* > * If swiotlb_unencrypted_base is set, the bounce buffer memory will > * be remapped and cleared in swiotlb_update_mem_attributes. > */ Thanks for suggestion. Will update. Thanks. >> + ret = swiotlb_init_io_tlb_mem(mem, __pa(tlb), nslabs, false); >> + if (ret) { >> + memblock_free(mem->slots, alloc_size); >> + return ret; >> + } > > With the latest update swiotlb_init_io_tlb_mem will always return 0, > so no need for the return value change or error handling here. > OK. Will revert the change.
WARNING: multiple messages have this Message-ID (diff)
From: Tianyu Lan <ltykernel@gmail.com> To: Christoph Hellwig <hch@lst.de> Cc: linux-hyperv@vger.kernel.org, brijesh.singh@amd.com, peterz@infradead.org, dave.hansen@linux.intel.com, dave.hansen@intel.com, hpa@zytor.com, kys@microsoft.com, will@kernel.org, boris.ostrovsky@oracle.com, wei.liu@kernel.org, sstabellini@kernel.org, sthemmin@microsoft.com, linux-scsi@vger.kernel.org, x86@kernel.org, decui@microsoft.com, michael.h.kelley@microsoft.com, mingo@redhat.com, kuba@kernel.org, haiyangz@microsoft.com, parri.andrea@gmail.com, thomas.lendacky@amd.com, Tianyu Lan <Tianyu.Lan@microsoft.com>, konrad.wilk@oracle.com, jejb@linux.ibm.com, bp@alien8.de, luto@kernel.org, xen-devel@lists.xenproject.org, tglx@linutronix.de, jgross@suse.com, martin.petersen@oracle.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, vkuznets@redhat.com, robin.murphy@arm.com, davem@davemloft.net Subject: Re: [PATCH 1/5] x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM Date: Wed, 17 Nov 2021 21:32:13 +0800 [thread overview] Message-ID: <0ab42ae0-9323-9297-c2c8-1cfc1ebada08@gmail.com> (raw) In-Reply-To: <20211117095953.GA10330@lst.de> Hi Christoph: Thanks for your review. On 11/17/2021 5:59 PM, Christoph Hellwig wrote: > The subject is wrong, nothing x86-specific here. Please use > "swiotlb: " as the prefix OK. Will update. Thanks. > >> + * @vaddr: The vaddr of the swiotlb memory pool. The swiotlb >> + * memory pool may be remapped in the memory encrypted case and store > > Please avoid the overly long line. > >> + /* >> + * With swiotlb_unencrypted_base setting, swiotlb bounce buffer will >> + * be remapped in the swiotlb_update_mem_attributes() and return here >> + * directly. >> + */ > > I'd word this as: > > /* > * If swiotlb_unencrypted_base is set, the bounce buffer memory will > * be remapped and cleared in swiotlb_update_mem_attributes. > */ Thanks for suggestion. Will update. Thanks. >> + ret = swiotlb_init_io_tlb_mem(mem, __pa(tlb), nslabs, false); >> + if (ret) { >> + memblock_free(mem->slots, alloc_size); >> + return ret; >> + } > > With the latest update swiotlb_init_io_tlb_mem will always return 0, > so no need for the return value change or error handling here. > OK. Will revert the change. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-11-17 13:32 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-16 15:39 [PATCH 0/5] x86/Hyper-V: Add Hyper-V Isolation VM support(Second part) Tianyu Lan 2021-11-16 15:39 ` Tianyu Lan 2021-11-16 15:39 ` [PATCH 1/5] x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM Tianyu Lan 2021-11-16 15:39 ` Tianyu Lan 2021-11-17 9:59 ` Christoph Hellwig 2021-11-17 9:59 ` Christoph Hellwig 2021-11-17 13:32 ` Tianyu Lan [this message] 2021-11-17 13:32 ` Tianyu Lan 2021-11-16 15:39 ` [PATCH 2/5] dma-mapping: Add vmap/vunmap_noncontiguous() callback in dma ops Tianyu Lan 2021-11-16 15:39 ` Tianyu Lan 2021-11-16 15:39 ` [PATCH 3/5] hyperv/IOMMU: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan 2021-11-16 15:39 ` Tianyu Lan 2021-11-16 19:12 ` Borislav Petkov 2021-11-16 19:12 ` Borislav Petkov 2021-11-17 13:22 ` Tianyu Lan 2021-11-17 13:22 ` Tianyu Lan 2021-11-17 10:01 ` Christoph Hellwig 2021-11-17 10:01 ` Christoph Hellwig 2021-11-17 14:00 ` Tianyu Lan 2021-11-17 14:00 ` Tianyu Lan 2021-11-19 14:23 ` Tianyu Lan 2021-11-19 14:23 ` Tianyu Lan 2021-11-26 7:40 ` Christoph Hellwig 2021-11-26 7:40 ` Christoph Hellwig 2021-11-26 11:39 ` Tianyu Lan 2021-11-26 11:39 ` Tianyu Lan 2021-11-16 15:39 ` [PATCH 4/5] net: netvsc: Add Isolation VM support for netvsc driver Tianyu Lan 2021-11-16 15:39 ` Tianyu Lan 2021-11-16 15:39 ` [PATCH 5/5] scsi: storvsc: Add Isolation VM support for storvsc driver Tianyu Lan 2021-11-16 15:39 ` Tianyu Lan
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