From: Honglei Huang <Honglei1.Huang@amd.com>
Define a new ioctl command AMDKFD_IOC_SVM_RANGES (0x27) to support
batch registration of multiple SVM ranges. Update AMDKFD_COMMAND_END
from 0x27 to 0x28 accordingly.
This ioctl provides a more efficient interface for userspace to
register multiple non-contiguous memory ranges with the same set
of SVM attributes in a single system call, reducing context switching
overhead compared to multiple AMDKFD_IOC_SVM calls.
Signed-off-by: Honglei Huang <Honglei1.Huang@amd.com>
---
include/uapi/linux/kfd_ioctl.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
index d782bda1d2ca..c5f9595ef30d 100644
--- a/include/uapi/linux/kfd_ioctl.h
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -663,7 +663,6 @@ enum kfd_mmio_remap {
#define KFD_IOCTL_SVM_FLAG_GPU_ALWAYS_MAPPED 0x00000040
/* Fine grained coherency between all devices using device-scope atomics */
#define KFD_IOCTL_SVM_FLAG_EXT_COHERENT 0x00000080
-
/**
* kfd_ioctl_svm_op - SVM ioctl operations
*
@@ -1622,7 +1621,10 @@ struct kfd_ioctl_dbg_trap_args {
#define AMDKFD_IOC_DBG_TRAP \
AMDKFD_IOWR(0x26, struct kfd_ioctl_dbg_trap_args)
+#define AMDKFD_IOC_SVM_RANGES \
+ AMDKFD_IOWR(0x27, struct kfd_ioctl_svm_ranges_args)
+
#define AMDKFD_COMMAND_START 0x01
-#define AMDKFD_COMMAND_END 0x27
+#define AMDKFD_COMMAND_END 0x28
#endif
--
2.34.1