On Mon, Jan 15, 2024 at 05:44:13PM +, Shameerali Kolothum Thodi wrote:
> > If it is valid when userspace does read() then it should be valid when
> > userspace does write() too.
> >
> > It is the only way the kernel can actually match request and response
> > here.
>
> The kernel currently c
Liu
> ; Jacob Pan ;
> io...@lists.linux.dev; linux-kselftest@vger.kernel.org;
> virtualizat...@lists.linux-foundation.org; linux-ker...@vger.kernel.org
> Subject: Re: [PATCH v2 4/6] iommufd: Deliver fault messages to user space
>
> On Fri, Jan 12, 2024 at 05:46:1
On Fri, Jan 12, 2024 at 05:46:13PM +, Shameerali Kolothum Thodi wrote:
>
>
> > -Original Message-
> > From: Lu Baolu
> > Sent: Thursday, October 26, 2023 3:49 AM
> > To: Jason Gunthorpe ; Kevin Tian ;
> > Joerg
> > Roedel ; Will Deacon ; Robin Murphy
> > ; Jean-Philippe Brucker ;
>
> -Original Message-
> From: Lu Baolu
> Sent: Thursday, October 26, 2023 3:49 AM
> To: Jason Gunthorpe ; Kevin Tian ; Joerg
> Roedel ; Will Deacon ; Robin Murphy
> ; Jean-Philippe Brucker ;
> Nicolin Chen ; Yi Liu ; Jacob Pan
>
> Cc: io...@lists.linux.dev; linux-kselftest@vger.kernel.o
On Fri, Dec 08, 2023 at 01:47:35PM +0800, Baolu Lu wrote:
> On 12/8/23 1:17 AM, Jason Gunthorpe wrote:
> > On Thu, Dec 07, 2023 at 05:34:10PM +0100, Joel Granados wrote:
> > > > @@ -58,6 +255,8 @@ static void hw_pagetable_fault_free(struct
> > > > hw_pgtable_fault *fault)
> > > > WARN_ON(!
On 2023/12/1 23:24, Jason Gunthorpe wrote:
On Thu, Oct 26, 2023 at 10:49:28AM +0800, Lu Baolu wrote:
+static ssize_t hwpt_fault_fops_write(struct file *filep,
+const char __user *buf,
+size_t count, loff_t *ppos)
+{
+
On 12/8/23 1:17 AM, Jason Gunthorpe wrote:
On Thu, Dec 07, 2023 at 05:34:10PM +0100, Joel Granados wrote:
@@ -58,6 +255,8 @@ static void hw_pagetable_fault_free(struct hw_pgtable_fault
*fault)
WARN_ON(!list_empty(&fault->deliver));
WARN_ON(!list_empty(&fault->response));
+ fp
On Thu, Dec 07, 2023 at 05:34:10PM +0100, Joel Granados wrote:
> > @@ -58,6 +255,8 @@ static void hw_pagetable_fault_free(struct
> > hw_pgtable_fault *fault)
> > WARN_ON(!list_empty(&fault->deliver));
> > WARN_ON(!list_empty(&fault->response));
> >
> > + fput(fault->fault_file);
> > +
On Thu, Oct 26, 2023 at 10:49:28AM +0800, Lu Baolu wrote:
> Add the file interface that provides a simple and efficient way for
> userspace to handle page faults. The file interface allows userspace
> to read fault messages sequentially, and to respond to the handling
> result by writing to the sam
On Thu, Oct 26, 2023 at 10:49:28AM +0800, Lu Baolu wrote:
> +static ssize_t hwpt_fault_fops_write(struct file *filep,
> + const char __user *buf,
> + size_t count, loff_t *ppos)
> +{
> + size_t response_size = sizeof(struct iomm
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