Commit 5caca32f authored by Alexander Gordeev's avatar Alexander Gordeev Committed by Vasily Gorbik
Browse files

s390/cpcmd: use physical address for command and response 



Virtual Console Function DIAGNOSE 8 accepts physical
addresses of command and response strings.

Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 273cd173

arch/s390/kernel/cpcmd.c

+3 −3
Original line number Diff line number Diff line
@@ -29,7 +29,7 @@ static int diag8_noresponse(int cmdlen) 
	asm volatile(

		"	diag	%[rx],%[ry],0x8\n"

		: [ry] "+&d" (cmdlen)

		: [rx] "d" ((addr_t) cpcmd_buf)

		: [rx] "d" (__pa(cpcmd_buf))

		: "cc");

	return cmdlen;

}
@@ -39,8 +39,8 @@ static int diag8_response(int cmdlen, char *response, int *rlen) 
	union register_pair rx, ry;

	int cc;



	rx.even = (addr_t) cpcmd_buf;

	rx.odd	= (addr_t) response;

	rx.even = __pa(cpcmd_buf);

	rx.odd	= __pa(response);

	ry.even = cmdlen | 0x40000000L;

	ry.odd	= *rlen;

	asm volatile(