iommu.lists.linux-foundation.org archive mirror
 help / color / mirror / Atom feed
From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: iommu@lists.linux-foundation.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
	linux-mm@kvack.org
Cc: mark.rutland@arm.com, kevin.tian@intel.com,
	catalin.marinas@arm.com, robin.murphy@arm.com,
	robh+dt@kernel.org, zhangfei.gao@linaro.org, will@kernel.org,
	christian.koenig@amd.com
Subject: [PATCH v4 10/26] arm64: cpufeature: Export symbol read_sanitised_ftr_reg()
Date: Mon, 24 Feb 2020 19:23:45 +0100	[thread overview]
Message-ID: <20200224182401.353359-11-jean-philippe@linaro.org> (raw)
In-Reply-To: <20200224182401.353359-1-jean-philippe@linaro.org>

The SMMUv3 driver would like to read the MMFR0 PARANGE field in order to
share CPU page tables with devices. Allow the driver to be built as
module by exporting the read_sanitized_ftr_reg() cpufeature symbol.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
 arch/arm64/kernel/cpufeature.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 0b6715625cf6..a96d2fb12e4d 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -838,6 +838,7 @@ u64 read_sanitised_ftr_reg(u32 id)
 	BUG_ON(!regp);
 	return regp->sys_val;
 }
+EXPORT_SYMBOL_GPL(read_sanitised_ftr_reg);
 
 #define read_sysreg_case(r)	\
 	case r:		return read_sysreg_s(r)
-- 
2.25.0

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

  parent reply	other threads:[~2020-02-24 18:24 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-24 18:23 [PATCH v4 00/26] iommu: Shared Virtual Addressing and SMMUv3 support Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 01/26] mm/mmu_notifiers: pass private data down to alloc_notifier() Jean-Philippe Brucker
2020-02-24 19:00   ` Jason Gunthorpe
2020-02-25  9:24     ` Jean-Philippe Brucker
2020-02-25 14:08       ` Jason Gunthorpe
2020-02-28 14:39         ` Jean-Philippe Brucker
2020-02-28 14:48           ` Jason Gunthorpe
2020-02-28 15:04             ` Jean-Philippe Brucker
2020-02-28 15:13               ` Jason Gunthorpe
2020-03-06  9:56                 ` Jean-Philippe Brucker
2020-03-06 13:09                   ` Jason Gunthorpe
2020-03-06 14:35                     ` Jean-Philippe Brucker
2020-03-06 14:52                       ` Jason Gunthorpe
2020-03-06 16:15                         ` Jean-Philippe Brucker
2020-03-06 17:42                           ` Jason Gunthorpe
2020-03-13 18:49                             ` Jean-Philippe Brucker
2020-03-13 19:13                               ` Jason Gunthorpe
2020-03-16 15:46                     ` Christoph Hellwig
2020-03-17 18:40                       ` Jason Gunthorpe
2020-03-05 16:36   ` Christoph Hellwig
2020-02-24 18:23 ` [PATCH v4 02/26] iommu/sva: Manage process address spaces Jean-Philippe Brucker
2020-02-26 12:35   ` Jonathan Cameron
2020-02-28 14:43     ` Jean-Philippe Brucker
2020-02-28 16:26       ` Jonathan Cameron
2020-02-26 19:13   ` Jacob Pan
2020-02-28 14:40     ` Jean-Philippe Brucker
2020-02-28 14:57       ` Jason Gunthorpe
2020-02-24 18:23 ` [PATCH v4 03/26] iommu: Add a page fault handler Jean-Philippe Brucker
2020-02-25  3:30   ` Xu Zaibo
2020-02-25  9:25     ` Jean-Philippe Brucker
2020-02-26  3:05       ` Xu Zaibo
2020-02-26 13:59   ` Jonathan Cameron
2020-02-28 14:44     ` Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 04/26] iommu/sva: Search mm by PASID Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 05/26] iommu/iopf: Handle mm faults Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 06/26] iommu/sva: Register page fault handler Jean-Philippe Brucker
2020-02-26 19:39   ` Jacob Pan
2020-02-28 14:44     ` Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 07/26] arm64: mm: Pin down ASIDs for sharing mm with devices Jean-Philippe Brucker
2020-02-27 17:43   ` Jonathan Cameron
2020-03-04 14:10     ` Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 08/26] iommu/io-pgtable-arm: Move some definitions to a header Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 09/26] iommu/arm-smmu-v3: Manage ASIDs with xarray Jean-Philippe Brucker
2020-02-24 18:23 ` Jean-Philippe Brucker [this message]
2020-02-24 18:23 ` [PATCH v4 11/26] iommu/arm-smmu-v3: Share process page tables Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 12/26] iommu/arm-smmu-v3: Seize private ASID Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 13/26] iommu/arm-smmu-v3: Add support for VHE Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 14/26] iommu/arm-smmu-v3: Enable broadcast TLB maintenance Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 15/26] iommu/arm-smmu-v3: Add SVA feature checking Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 16/26] iommu/arm-smmu-v3: Add dev_to_master() helper Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 17/26] iommu/arm-smmu-v3: Implement mm operations Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 18/26] iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 19/26] iommu/arm-smmu-v3: Add support for Hardware Translation Table Update Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 20/26] iommu/arm-smmu-v3: Maintain a SID->device structure Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 21/26] iommu/arm-smmu-v3: Ratelimit event dump Jean-Philippe Brucker
2021-05-28  8:09   ` Aaro Koskinen
2021-05-28 16:25     ` Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 22/26] dt-bindings: document stall property for IOMMU masters Jean-Philippe Brucker
2020-02-24 18:23 ` [PATCH v4 23/26] iommu/arm-smmu-v3: Add stall support for platform devices Jean-Philippe Brucker
2020-02-26  8:44   ` Xu Zaibo
2020-03-04 14:09     ` Jean-Philippe Brucker
2020-02-27 18:17   ` Jonathan Cameron
2020-03-04 14:08     ` Jean-Philippe Brucker
2020-03-09 10:48       ` Jonathan Cameron
2020-02-24 18:23 ` [PATCH v4 24/26] PCI/ATS: Add PRI stubs Jean-Philippe Brucker
2020-02-27 20:55   ` Bjorn Helgaas
2020-02-24 18:24 ` [PATCH v4 25/26] PCI/ATS: Export symbols of PRI functions Jean-Philippe Brucker
2020-02-27 20:55   ` Bjorn Helgaas
2020-02-24 18:24 ` [PATCH v4 26/26] iommu/arm-smmu-v3: Add support for PRI Jean-Philippe Brucker
2020-02-27 18:22 ` [PATCH v4 00/26] iommu: Shared Virtual Addressing and SMMUv3 support Jonathan Cameron

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200224182401.353359-11-jean-philippe@linaro.org \
    --to=jean-philippe@linaro.org \
    --cc=catalin.marinas@arm.com \
    --cc=christian.koenig@amd.com \
    --cc=devicetree@vger.kernel.org \
    --cc=iommu@lists.linux-foundation.org \
    --cc=kevin.tian@intel.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-pci@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=robh+dt@kernel.org \
    --cc=robin.murphy@arm.com \
    --cc=will@kernel.org \
    --cc=zhangfei.gao@linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).