From: Lu Baolu <baolu.lu@linux.intel.com>
To: John Garry <john.garry@huawei.com>,
joro@8bytes.org, will@kernel.org, dwmw2@infradead.org,
robin.murphy@arm.com, corbet@lwn.net
Cc: linux-doc@vger.kernel.org, linuxarm@huawei.com,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org
Subject: Re: [PATCH v14 6/6] iommu: Remove mode argument from iommu_set_dma_strict()
Date: Fri, 18 Jun 2021 21:13:09 +0800 [thread overview]
Message-ID: <23887d11-2174-6909-c9d7-36a50f070e44@linux.intel.com> (raw)
In-Reply-To: <1624016058-189713-7-git-send-email-john.garry@huawei.com>
On 2021/6/18 19:34, John Garry wrote:
> We only ever now set strict mode enabled in iommu_set_dma_strict(), so
> just remove the argument.
>
> Signed-off-by: John Garry <john.garry@huawei.com>
> Reviewed-by: Robin Murphy <robin.murphy@arm.com>
> ---
> drivers/iommu/amd/init.c | 2 +-
> drivers/iommu/intel/iommu.c | 6 +++---
> drivers/iommu/iommu.c | 5 ++---
> include/linux/iommu.h | 2 +-
> 4 files changed, 7 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
> index 1e641cb6dddc..6e12a615117b 100644
> --- a/drivers/iommu/amd/init.c
> +++ b/drivers/iommu/amd/init.c
> @@ -3099,7 +3099,7 @@ static int __init parse_amd_iommu_options(char *str)
> for (; *str; ++str) {
> if (strncmp(str, "fullflush", 9) == 0) {
> pr_warn("amd_iommu=fullflush deprecated; use iommu.strict=1 instead\n");
> - iommu_set_dma_strict(true);
> + iommu_set_dma_strict();
> }
> if (strncmp(str, "force_enable", 12) == 0)
> amd_iommu_force_enable = true;
> diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
> index 06666f9d8116..77d0834fb0df 100644
> --- a/drivers/iommu/intel/iommu.c
> +++ b/drivers/iommu/intel/iommu.c
> @@ -454,7 +454,7 @@ static int __init intel_iommu_setup(char *str)
> iommu_dma_forcedac = true;
> } else if (!strncmp(str, "strict", 6)) {
> pr_warn("intel_iommu=strict deprecated; use iommu.strict=1 instead\n");
> - iommu_set_dma_strict(true);
> + iommu_set_dma_strict();
> } else if (!strncmp(str, "sp_off", 6)) {
> pr_info("Disable supported super page\n");
> intel_iommu_superpage = 0;
> @@ -4382,7 +4382,7 @@ int __init intel_iommu_init(void)
> */
> if (cap_caching_mode(iommu->cap)) {
> pr_info_once("IOMMU batching disallowed due to virtualization\n");
> - iommu_set_dma_strict(true);
> + iommu_set_dma_strict();
> }
> iommu_device_sysfs_add(&iommu->iommu, NULL,
> intel_iommu_groups,
> @@ -5699,7 +5699,7 @@ static void quirk_calpella_no_shadow_gtt(struct pci_dev *dev)
> } else if (dmar_map_gfx) {
> /* we have to ensure the gfx device is idle before we flush */
> pci_info(dev, "Disabling batched IOTLB flush on Ironlake\n");
> - iommu_set_dma_strict(true);
> + iommu_set_dma_strict();
> }
> }
> DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0040, quirk_calpella_no_shadow_gtt);
> diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
> index 60b1ec42e73b..ff221d3ddcbc 100644
> --- a/drivers/iommu/iommu.c
> +++ b/drivers/iommu/iommu.c
> @@ -349,10 +349,9 @@ static int __init iommu_dma_setup(char *str)
> }
> early_param("iommu.strict", iommu_dma_setup);
>
> -void iommu_set_dma_strict(bool strict)
> +void iommu_set_dma_strict(void)
> {
> - if (strict || !(iommu_cmd_line & IOMMU_CMD_LINE_STRICT))
> - iommu_dma_strict = strict;
> + iommu_dma_strict = true;
> }
>
> bool iommu_get_dma_strict(struct iommu_domain *domain)
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index 32d448050bf7..754f67d6dd90 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -476,7 +476,7 @@ int iommu_enable_nesting(struct iommu_domain *domain);
> int iommu_set_pgtable_quirks(struct iommu_domain *domain,
> unsigned long quirks);
>
> -void iommu_set_dma_strict(bool val);
> +void iommu_set_dma_strict(void);
> bool iommu_get_dma_strict(struct iommu_domain *domain);
>
> extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev,
>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Best regards,
baolu
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-06-18 13:13 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-18 11:34 [PATCH v14 0/6] iommu: Enhance IOMMU default DMA mode build options John Garry
2021-06-18 11:34 ` [PATCH v14 1/6] iommu: Deprecate Intel and AMD cmdline methods to enable strict mode John Garry
2021-06-18 13:09 ` Lu Baolu
2021-06-18 11:34 ` [PATCH v14 2/6] iommu: Print strict or lazy mode at init time John Garry
2021-06-18 13:10 ` Lu Baolu
2021-06-18 11:34 ` [PATCH v14 3/6] iommu: Enhance IOMMU default DMA mode build options John Garry
2021-06-18 13:11 ` Lu Baolu
2021-06-18 11:34 ` [PATCH v14 4/6] iommu/vt-d: Add support for " John Garry
2021-06-18 13:12 ` Lu Baolu
2021-06-18 11:34 ` [PATCH v14 5/6] iommu/amd: " John Garry
2021-06-18 11:34 ` [PATCH v14 6/6] iommu: Remove mode argument from iommu_set_dma_strict() John Garry
2021-06-18 13:13 ` Lu Baolu [this message]
2021-06-21 5:17 ` Lu Baolu
2021-06-21 8:12 ` John Garry
2021-06-21 10:00 ` Lu Baolu
2021-06-21 10:34 ` John Garry
2021-06-21 11:59 ` Robin Murphy
2021-06-21 12:08 ` John Garry
2021-06-21 14:32 ` Lu Baolu
2021-06-22 22:25 ` Robin Murphy
2021-06-23 7:21 ` Lu Baolu
2021-06-25 16:41 ` [PATCH v14 0/6] iommu: Enhance IOMMU default DMA mode build options John Garry
2021-07-08 9:38 ` joro
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