Commit e1ab1101 authored Jun 05, 2019 by Harald Freudenberger Committed by Heiko Carstens Jun 07, 2019

s390/zcrypt: support special flagged EP11 cprbs



Within an EP11 cprb there exists a byte field flags. Bit 0x20
of this field indicates a special cprb. A special cprb triggers
special handling in the firmware below the OS layer.

However, a special cprb also needs to have the S bit in GPR0
set when NQAP is called. This was not the case for EP11 cprbs
and this patch now introduces the code to support this.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

parent bae0aae2

drivers/s390/crypto/zcrypt_msgtype6.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -567,6 +567,10 @@ static int xcrb_msg_to_type6_ep11cprb_msgx(struct ap_message *ap_msg,
		payload_hdr = (struct pld_hdr *)((&(msg->pld_lenfmt))+lfmt);
		*fcode = payload_hdr->func_val & 0xFFFF;

		/* enable special processing based on the cprbs flags special bit */
		if (msg->cprbx.flags & 0x20)
		ap_msg->special = 1;

		return 0;
		}

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