Displaying 8 results from an estimated 8 matches for "dmirror_hmm_flags".
2020 Mar 20
1
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
...> + unsigned long end, bool write)
>> +{
>> + struct mm_struct *mm = dmirror->mm;
>> + unsigned long addr;
>> + uint64_t pfns[64];
>> + struct hmm_range range = {
>> + .notifier = &dmirror->notifier,
>> + .pfns = pfns,
>> + .flags = dmirror_hmm_flags,
>> + .values = dmirror_hmm_values,
>> + .pfn_shift = DPT_SHIFT,
>> + .pfn_flags_mask = ~(dmirror_hmm_flags[HMM_PFN_VALID] |
>> + dmirror_hmm_flags[HMM_PFN_WRITE]),
>
> Since pfns is not initialized pfn_flags_mask should be 0.
Good point.
>> + .defa...
2020 Mar 17
4
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
On 3/17/20 5:59 AM, Christoph Hellwig wrote:
> On Tue, Mar 17, 2020 at 09:47:55AM -0300, Jason Gunthorpe wrote:
>> I've been using v7 of Ralph's tester and it is working well - it has
>> DEVICE_PRIVATE support so I think it can test this flow too. Ralph are
>> you able?
>>
>> This hunk seems trivial enough to me, can we include it now?
>
> I can send
2020 Mar 20
0
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
...*dmirror, unsigned long start,
> + unsigned long end, bool write)
> +{
> + struct mm_struct *mm = dmirror->mm;
> + unsigned long addr;
> + uint64_t pfns[64];
> + struct hmm_range range = {
> + .notifier = &dmirror->notifier,
> + .pfns = pfns,
> + .flags = dmirror_hmm_flags,
> + .values = dmirror_hmm_values,
> + .pfn_shift = DPT_SHIFT,
> + .pfn_flags_mask = ~(dmirror_hmm_flags[HMM_PFN_VALID] |
> + dmirror_hmm_flags[HMM_PFN_WRITE]),
Since pfns is not initialized pfn_flags_mask should be 0.
> + .default_flags = dmirror_hmm_flags[HMM_PFN_VALID...
2020 Mar 19
0
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
...*dmirror, unsigned long start,
> + unsigned long end, bool write)
> +{
> + struct mm_struct *mm = dmirror->mm;
> + unsigned long addr;
> + uint64_t pfns[64];
> + struct hmm_range range = {
> + .notifier = &dmirror->notifier,
> + .pfns = pfns,
> + .flags = dmirror_hmm_flags,
> + .values = dmirror_hmm_values,
> + .pfn_shift = DPT_SHIFT,
> + .pfn_flags_mask = ~(dmirror_hmm_flags[HMM_PFN_VALID] |
> + dmirror_hmm_flags[HMM_PFN_WRITE]),
> + .default_flags = dmirror_hmm_flags[HMM_PFN_VALID] |
> + (write ? dmirror_hmm_flags[HMM_PFN_WRITE] : 0)...
2020 Mar 19
2
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
...> + unsigned long end, bool write)
>> +{
>> + struct mm_struct *mm = dmirror->mm;
>> + unsigned long addr;
>> + uint64_t pfns[64];
>> + struct hmm_range range = {
>> + .notifier = &dmirror->notifier,
>> + .pfns = pfns,
>> + .flags = dmirror_hmm_flags,
>> + .values = dmirror_hmm_values,
>> + .pfn_shift = DPT_SHIFT,
>> + .pfn_flags_mask = ~(dmirror_hmm_flags[HMM_PFN_VALID] |
>> + dmirror_hmm_flags[HMM_PFN_WRITE]),
>> + .default_flags = dmirror_hmm_flags[HMM_PFN_VALID] |
>> + (write ? dmirror_hmm_f...
2020 Jan 13
9
[PATCH v6 0/6] mm/hmm/test: add self tests for HMM
This series adds new functions to the mmu interval notifier API to
allow device drivers with MMUs to dynamically mirror a process' page
tables based on device faults and invalidation callbacks. The Nouveau
driver is updated to use the extended API and a set of stand alone self
tests is added to help validate and maintain correctness.
The patches are based on linux-5.5.0-rc6 and are for
2020 Apr 22
11
[PATCH hmm 0/5] Adjust hmm_range_fault() API
...5..a2442efa038c41 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -47,23 +47,8 @@ struct dmirror_bounce {
unsigned long cpages;
};
-#define DPT_SHIFT PAGE_SHIFT
-#define DPT_VALID (1UL << 0)
-#define DPT_WRITE (1UL << 1)
-
#define DPT_XA_TAG_WRITE 3UL
-static const uint64_t dmirror_hmm_flags[HMM_PFN_FLAG_MAX] = {
- [HMM_PFN_VALID] = DPT_VALID,
- [HMM_PFN_WRITE] = DPT_WRITE,
-};
-
-static const uint64_t dmirror_hmm_values[HMM_PFN_VALUE_MAX] = {
- [HMM_PFN_NONE] = 0,
- [HMM_PFN_ERROR] = 0x10,
- [HMM_PFN_SPECIAL] = 0x10,
-};
-
/*
* Data structure to track address ranges and regist...
2019 Sep 11
6
[PATCH 0/4] HMM tests and minor fixes
These changes are based on Jason's latest hmm branch.
Patch 1 was previously posted here [1] but was dropped from the orginal
series. Hopefully, the tests will reduce concerns about edge conditions.
I'm sure more tests could be usefully added but I thought this was a good
starting point.
[1] https://lore.kernel.org/linux-mm/20190726005650.2566-6-rcampbell at nvidia.com/
Ralph Campbell