diff options
| author | Ofir Bitton <obitton@habana.ai> | 2021-09-23 12:02:23 +0300 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2021-10-18 12:05:46 +0300 |
| commit | d62b9a6976cdac30a3af745de1f935ffe246fcdd (patch) | |
| tree | 13881e497ab17e0884c2e9038b1c21aa7e721ce6 /drivers/misc | |
| parent | 027d53b03ca1fe55ea9356ffdb7296432d236e59 (diff) | |
| download | linux-d62b9a6976cdac30a3af745de1f935ffe246fcdd.tar.xz | |
habanalabs: add support for a long interrupt target value
In order to avoid user target value wraparound, we modify the
current interface so user will be able to wait for an 8-byte
target value rather than a 4-byte value.
Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/common/command_submission.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/misc/habanalabs/common/command_submission.c b/drivers/misc/habanalabs/common/command_submission.c index a344928363c8..44bab01cd033 100644 --- a/drivers/misc/habanalabs/common/command_submission.c +++ b/drivers/misc/habanalabs/common/command_submission.c @@ -2739,13 +2739,13 @@ static int hl_cs_wait_ioctl(struct hl_fpriv *hpriv, void *data) static int _hl_interrupt_wait_ioctl(struct hl_device *hdev, struct hl_ctx *ctx, u32 timeout_us, u64 user_address, - u32 target_value, u16 interrupt_offset, + u64 target_value, u16 interrupt_offset, enum hl_cs_wait_status *status) { struct hl_user_pending_interrupt *pend; struct hl_user_interrupt *interrupt; unsigned long timeout, flags; - u32 completion_value; + u64 completion_value; long completion_rc; int rc = 0; @@ -2779,7 +2779,7 @@ static int _hl_interrupt_wait_ioctl(struct hl_device *hdev, struct hl_ctx *ctx, /* We check for completion value as interrupt could have been received * before we added the node to the wait list */ - if (copy_from_user(&completion_value, u64_to_user_ptr(user_address), 4)) { + if (copy_from_user(&completion_value, u64_to_user_ptr(user_address), 8)) { dev_err(hdev->dev, "Failed to copy completion value from user\n"); rc = -EFAULT; goto remove_pending_user_interrupt; @@ -2811,7 +2811,7 @@ wait_again: reinit_completion(&pend->fence.completion); spin_unlock_irqrestore(&interrupt->wait_list_lock, flags); - if (copy_from_user(&completion_value, u64_to_user_ptr(user_address), 4)) { + if (copy_from_user(&completion_value, u64_to_user_ptr(user_address), 8)) { dev_err(hdev->dev, "Failed to copy completion value from user\n"); rc = -EFAULT; |