Commit da59c71c authored by Steffen Eiden's avatar Steffen Eiden Committed by Heiko Carstens
Browse files

s390/uv: Use a constant for more-data rc 



Add a define for the UVC rc 0x0100 that indicates that a UV-call was
successful but may serve more data if called with a larger buffer
again.

Reviewed-by: default avatarClaudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: default avatarJanosch Frank <frankja@linux.ibm.com>
Reviewed-by: default avatarChristoph Schlameuss <schlameuss@linux.ibm.com>
Signed-off-by: default avatarSteffen Eiden <seiden@linux.ibm.com>
Link: https://lore.kernel.org/r/20241024062638.1465970-2-seiden@linux.ibm.com


Signed-off-by: default avatarJanosch Frank <frankja@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent 28a51ee8

arch/s390/boot/uv.c

+2 −2
Original line number Diff line number Diff line
@@ -22,8 +22,8 @@ void uv_query_info(void) 
	if (!test_facility(158))

		return;



	/* rc==0x100 means that there is additional data we do not process */

	if (uv_call(0, (uint64_t)&uvcb) && uvcb.header.rc != 0x100)

	/* Ignore that there might be more data we do not process */

	if (uv_call(0, (uint64_t)&uvcb) && uvcb.header.rc != UVC_RC_MORE_DATA)

		return;



	if (IS_ENABLED(CONFIG_KVM)) {

arch/s390/include/asm/uv.h

+1 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#define UVC_RC_INV_STATE	0x0003

#define UVC_RC_INV_LEN		0x0005

#define UVC_RC_NO_RESUME	0x0007

#define UVC_RC_MORE_DATA	0x0100

#define UVC_RC_NEED_DESTROY	0x8000



#define UVC_CMD_QUI			0x0001