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dmarc=pass (policy=quarantine) header.from=amd.com X-HE-Tag: 1641853945-213660 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: new ioctl cmd added to query zone device type. This will be used once the test_hmm adds zone device coherent type. Signed-off-by: Alex Sierra --- lib/test_hmm.c | 14 ++++++++++++++ lib/test_hmm_uapi.h | 8 ++++++++ 2 files changed, 22 insertions(+) diff --git a/lib/test_hmm.c b/lib/test_hmm.c index c259842f6d44..97e48164d56a 100644 --- a/lib/test_hmm.c +++ b/lib/test_hmm.c @@ -84,6 +84,7 @@ struct dmirror_chunk { struct dmirror_device { struct cdev cdevice; struct hmm_devmem *devmem; + unsigned int zone_device_type; =20 unsigned int devmem_capacity; unsigned int devmem_count; @@ -470,6 +471,7 @@ static bool dmirror_allocate_chunk(struct dmirror_dev= ice *mdevice, if (IS_ERR(res)) goto err_devmem; =20 + mdevice->zone_device_type =3D HMM_DMIRROR_MEMORY_DEVICE_PRIVATE; devmem->pagemap.type =3D MEMORY_DEVICE_PRIVATE; devmem->pagemap.range.start =3D res->start; devmem->pagemap.range.end =3D res->end; @@ -1025,6 +1027,15 @@ static int dmirror_snapshot(struct dmirror *dmirro= r, return ret; } =20 +static int dmirror_get_device_type(struct dmirror *dmirror, + struct hmm_dmirror_cmd *cmd) +{ + mutex_lock(&dmirror->mutex); + cmd->zone_device_type =3D dmirror->mdevice->zone_device_type; + mutex_unlock(&dmirror->mutex); + + return 0; +} static long dmirror_fops_unlocked_ioctl(struct file *filp, unsigned int command, unsigned long arg) @@ -1075,6 +1086,9 @@ static long dmirror_fops_unlocked_ioctl(struct file= *filp, ret =3D dmirror_snapshot(dmirror, &cmd); break; =20 + case HMM_DMIRROR_GET_MEM_DEV_TYPE: + ret =3D dmirror_get_device_type(dmirror, &cmd); + break; default: return -EINVAL; } diff --git a/lib/test_hmm_uapi.h b/lib/test_hmm_uapi.h index f14dea5dcd06..17f842f1aa02 100644 --- a/lib/test_hmm_uapi.h +++ b/lib/test_hmm_uapi.h @@ -19,6 +19,7 @@ * @npages: (in) number of pages to read/write * @cpages: (out) number of pages copied * @faults: (out) number of device page faults seen + * @zone_device_type: (out) zone device memory type */ struct hmm_dmirror_cmd { __u64 addr; @@ -26,6 +27,7 @@ struct hmm_dmirror_cmd { __u64 npages; __u64 cpages; __u64 faults; + __u64 zone_device_type; }; =20 /* Expose the address space of the calling process through hmm device fi= le */ @@ -35,6 +37,7 @@ struct hmm_dmirror_cmd { #define HMM_DMIRROR_SNAPSHOT _IOWR('H', 0x03, struct hmm_dmirror_cmd) #define HMM_DMIRROR_EXCLUSIVE _IOWR('H', 0x04, struct hmm_dmirror_cmd) #define HMM_DMIRROR_CHECK_EXCLUSIVE _IOWR('H', 0x05, struct hmm_dmirror_= cmd) +#define HMM_DMIRROR_GET_MEM_DEV_TYPE _IOWR('H', 0x06, struct hmm_dmirror= _cmd) =20 /* * Values returned in hmm_dmirror_cmd.ptr for HMM_DMIRROR_SNAPSHOT. @@ -62,4 +65,9 @@ enum { HMM_DMIRROR_PROT_DEV_PRIVATE_REMOTE =3D 0x30, }; =20 +enum { + /* 0 is reserved to catch uninitialized type fields */ + HMM_DMIRROR_MEMORY_DEVICE_PRIVATE =3D 1, +}; + #endif /* _LIB_TEST_HMM_UAPI_H */ --=20 2.32.0