diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/cxl/context.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c index 2a4c80ac322a..6236d4a1f7ad 100644 --- a/drivers/misc/cxl/context.c +++ b/drivers/misc/cxl/context.c @@ -145,8 +145,16 @@ static const struct vm_operations_struct cxl_mmap_vmops = { */ int cxl_context_iomap(struct cxl_context *ctx, struct vm_area_struct *vma) { + u64 start = vma->vm_pgoff << PAGE_SHIFT; u64 len = vma->vm_end - vma->vm_start; - len = min(len, ctx->psn_size); + + if (ctx->afu->current_mode == CXL_MODE_DEDICATED) { + if (start + len > ctx->afu->adapter->ps_size) + return -EINVAL; + } else { + if (start + len > ctx->psn_size) + return -EINVAL; + } if (ctx->afu->current_mode != CXL_MODE_DEDICATED) { /* make sure there is a valid per process space for this AFU */ |