* [PATCH] Handle init_iova_flush_queue failure in dma-iommu path
@ 2020-09-10 12:25 Tom Murphy
2020-09-18 8:55 ` Joerg Roedel
2020-09-18 15:14 ` Joerg Roedel
0 siblings, 2 replies; 4+ messages in thread
From: Tom Murphy @ 2020-09-10 12:25 UTC (permalink / raw)
To: iommu; +Cc: linux-kernel, Tom Murphy
init_iova_flush_queue can fail if we run out of memory. Fall back to noflush
queue if it fails.
Signed-off-by: Tom Murphy <murphyt7@tcd.ie>
---
drivers/iommu/dma-iommu.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 4959f5df21bd..5f69126f3e91 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -343,8 +343,11 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base,
if (!cookie->fq_domain && !iommu_domain_get_attr(domain,
DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, &attr) && attr) {
- cookie->fq_domain = domain;
- init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all, NULL);
+ if (init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all,
+ NULL))
+ pr_warn("iova flush queue initialization failed\n");
+ else
+ cookie->fq_domain = domain;
}
if (!dev)
--
2.20.1
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] Handle init_iova_flush_queue failure in dma-iommu path
2020-09-10 12:25 [PATCH] Handle init_iova_flush_queue failure in dma-iommu path Tom Murphy
@ 2020-09-18 8:55 ` Joerg Roedel
2020-09-18 13:51 ` Robin Murphy
2020-09-18 15:14 ` Joerg Roedel
1 sibling, 1 reply; 4+ messages in thread
From: Joerg Roedel @ 2020-09-18 8:55 UTC (permalink / raw)
To: Tom Murphy, Robin Murphy; +Cc: iommu, linux-kernel
On Thu, Sep 10, 2020 at 01:25:38PM +0100, Tom Murphy wrote:
> init_iova_flush_queue can fail if we run out of memory. Fall back to noflush
> queue if it fails.
>
> Signed-off-by: Tom Murphy <murphyt7@tcd.ie>
> ---
> drivers/iommu/dma-iommu.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
> index 4959f5df21bd..5f69126f3e91 100644
> --- a/drivers/iommu/dma-iommu.c
> +++ b/drivers/iommu/dma-iommu.c
> @@ -343,8 +343,11 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base,
>
> if (!cookie->fq_domain && !iommu_domain_get_attr(domain,
> DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, &attr) && attr) {
> - cookie->fq_domain = domain;
> - init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all, NULL);
> + if (init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all,
> + NULL))
> + pr_warn("iova flush queue initialization failed\n");
> + else
> + cookie->fq_domain = domain;
> }
>
> if (!dev)
Looks good to me, but Robin should also have a look.
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] Handle init_iova_flush_queue failure in dma-iommu path
2020-09-18 8:55 ` Joerg Roedel
@ 2020-09-18 13:51 ` Robin Murphy
0 siblings, 0 replies; 4+ messages in thread
From: Robin Murphy @ 2020-09-18 13:51 UTC (permalink / raw)
To: Joerg Roedel, Tom Murphy; +Cc: iommu, linux-kernel
On 2020-09-18 09:55, Joerg Roedel wrote:
> On Thu, Sep 10, 2020 at 01:25:38PM +0100, Tom Murphy wrote:
>> init_iova_flush_queue can fail if we run out of memory. Fall back to noflush
>> queue if it fails.
>>
>> Signed-off-by: Tom Murphy <murphyt7@tcd.ie>
>> ---
>> drivers/iommu/dma-iommu.c | 7 +++++--
>> 1 file changed, 5 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
>> index 4959f5df21bd..5f69126f3e91 100644
>> --- a/drivers/iommu/dma-iommu.c
>> +++ b/drivers/iommu/dma-iommu.c
>> @@ -343,8 +343,11 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base,
>>
>> if (!cookie->fq_domain && !iommu_domain_get_attr(domain,
>> DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, &attr) && attr) {
>> - cookie->fq_domain = domain;
>> - init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all, NULL);
>> + if (init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all,
>> + NULL))
>> + pr_warn("iova flush queue initialization failed\n");
>> + else
>> + cookie->fq_domain = domain;
>> }
>>
>> if (!dev)
>
> Looks good to me, but Robin should also have a look.
Yup, seems reasonable, thanks Tom!
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] Handle init_iova_flush_queue failure in dma-iommu path
2020-09-10 12:25 [PATCH] Handle init_iova_flush_queue failure in dma-iommu path Tom Murphy
2020-09-18 8:55 ` Joerg Roedel
@ 2020-09-18 15:14 ` Joerg Roedel
1 sibling, 0 replies; 4+ messages in thread
From: Joerg Roedel @ 2020-09-18 15:14 UTC (permalink / raw)
To: Tom Murphy; +Cc: iommu, linux-kernel
On Thu, Sep 10, 2020 at 01:25:38PM +0100, Tom Murphy wrote:
> init_iova_flush_queue can fail if we run out of memory. Fall back to noflush
> queue if it fails.
>
> Signed-off-by: Tom Murphy <murphyt7@tcd.ie>
> ---
> drivers/iommu/dma-iommu.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
Applied, thanks Tom.
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-09-18 15:16 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-09-10 12:25 [PATCH] Handle init_iova_flush_queue failure in dma-iommu path Tom Murphy
2020-09-18 8:55 ` Joerg Roedel
2020-09-18 13:51 ` Robin Murphy
2020-09-18 15:14 ` Joerg Roedel
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).