From: Christoph Hellwig <hch@lst.de>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: iommu@lists.linux-foundation.org, xen-devel@lists.xenproject.org,
Claire Chang <tientzu@chromium.org>,
linuxppc-dev@lists.ozlabs.org,
Dongli Zhang <dongli.zhang@oracle.com>
Subject: [PATCH 2/8] xen-swiotlb: use is_swiotlb_buffer in is_xen_swiotlb_buffer
Date: Sun, 7 Feb 2021 17:09:28 +0100 [thread overview]
Message-ID: <20210207160934.2955931-3-hch@lst.de> (raw)
In-Reply-To: <20210207160934.2955931-1-hch@lst.de>
Use the is_swiotlb_buffer to check if a physical address is
a swiotlb buffer. This works because xen-swiotlb does use the
same buffer as the main swiotlb code, and xen_io_tlb_{start,end}
are just the addresses for it that went through phys_to_virt.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/xen/swiotlb-xen.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 2b385c1b4a99cb..a4026822a889f7 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -111,10 +111,8 @@ static int is_xen_swiotlb_buffer(struct device *dev, dma_addr_t dma_addr)
* have the same virtual address as another address
* in our domain. Therefore _only_ check address within our domain.
*/
- if (pfn_valid(PFN_DOWN(paddr))) {
- return paddr >= virt_to_phys(xen_io_tlb_start) &&
- paddr < virt_to_phys(xen_io_tlb_end);
- }
+ if (pfn_valid(PFN_DOWN(paddr)))
+ return is_swiotlb_buffer(paddr);
return 0;
}
--
2.29.2
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>,
iommu@lists.linux-foundation.org, xen-devel@lists.xenproject.org,
Claire Chang <tientzu@chromium.org>,
linuxppc-dev@lists.ozlabs.org,
Dongli Zhang <dongli.zhang@oracle.com>
Subject: [PATCH 2/8] xen-swiotlb: use is_swiotlb_buffer in is_xen_swiotlb_buffer
Date: Sun, 7 Feb 2021 17:09:28 +0100 [thread overview]
Message-ID: <20210207160934.2955931-3-hch@lst.de> (raw)
In-Reply-To: <20210207160934.2955931-1-hch@lst.de>
Use the is_swiotlb_buffer to check if a physical address is
a swiotlb buffer. This works because xen-swiotlb does use the
same buffer as the main swiotlb code, and xen_io_tlb_{start,end}
are just the addresses for it that went through phys_to_virt.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/xen/swiotlb-xen.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 2b385c1b4a99cb..a4026822a889f7 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -111,10 +111,8 @@ static int is_xen_swiotlb_buffer(struct device *dev, dma_addr_t dma_addr)
* have the same virtual address as another address
* in our domain. Therefore _only_ check address within our domain.
*/
- if (pfn_valid(PFN_DOWN(paddr))) {
- return paddr >= virt_to_phys(xen_io_tlb_start) &&
- paddr < virt_to_phys(xen_io_tlb_end);
- }
+ if (pfn_valid(PFN_DOWN(paddr)))
+ return is_swiotlb_buffer(paddr);
return 0;
}
--
2.29.2
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>,
Dongli Zhang <dongli.zhang@oracle.com>,
Claire Chang <tientzu@chromium.org>,
xen-devel@lists.xenproject.org, linuxppc-dev@lists.ozlabs.org,
iommu@lists.linux-foundation.org
Subject: [PATCH 2/8] xen-swiotlb: use is_swiotlb_buffer in is_xen_swiotlb_buffer
Date: Sun, 7 Feb 2021 17:09:28 +0100 [thread overview]
Message-ID: <20210207160934.2955931-3-hch@lst.de> (raw)
In-Reply-To: <20210207160934.2955931-1-hch@lst.de>
Use the is_swiotlb_buffer to check if a physical address is
a swiotlb buffer. This works because xen-swiotlb does use the
same buffer as the main swiotlb code, and xen_io_tlb_{start,end}
are just the addresses for it that went through phys_to_virt.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/xen/swiotlb-xen.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 2b385c1b4a99cb..a4026822a889f7 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -111,10 +111,8 @@ static int is_xen_swiotlb_buffer(struct device *dev, dma_addr_t dma_addr)
* have the same virtual address as another address
* in our domain. Therefore _only_ check address within our domain.
*/
- if (pfn_valid(PFN_DOWN(paddr))) {
- return paddr >= virt_to_phys(xen_io_tlb_start) &&
- paddr < virt_to_phys(xen_io_tlb_end);
- }
+ if (pfn_valid(PFN_DOWN(paddr)))
+ return is_swiotlb_buffer(paddr);
return 0;
}
--
2.29.2
next prev parent reply other threads:[~2021-02-07 16:21 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-07 16:09 swiotlb cleanups Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` [PATCH 1/8] powerpc/svm: stop using io_tlb_start Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig [this message]
2021-02-07 16:09 ` [PATCH 2/8] xen-swiotlb: use is_swiotlb_buffer in is_xen_swiotlb_buffer Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-19 20:43 ` Konrad Rzeszutek Wilk
2021-02-19 20:43 ` Konrad Rzeszutek Wilk
2021-02-19 20:43 ` Konrad Rzeszutek Wilk
2021-02-07 16:09 ` [PATCH 3/8] xen-swiotlb: use io_tlb_end in xen_swiotlb_dma_supported Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-19 21:00 ` Konrad Rzeszutek Wilk
2021-02-19 21:00 ` Konrad Rzeszutek Wilk
2021-02-19 21:00 ` Konrad Rzeszutek Wilk
2021-02-07 16:09 ` [PATCH 4/8] xen-swiotlb: remove xen_set_nslabs Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` [PATCH 5/8] xen-swiotlb: remove xen_io_tlb_start and xen_io_tlb_nslabs Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` [PATCH 6/8] swiotlb: lift the double initialization protection from xen-swiotlb Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` [PATCH 7/8] xen-swiotlb: split xen_swiotlb_init Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` [PATCH 8/8] xen-swiotlb: remove the unused size argument from xen_swiotlb_fixup Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
2021-02-07 16:09 ` Christoph Hellwig
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