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s390/diag: Generate CFI type information for assembly functions

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Use SYM_TYPED_FUNC_START to generate __kcfi_typeid_ symbols for assembler
functions which are called indirectly. All assembler functions contained in
text_amode31.S are called indirectly and require such annotations.

Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens
2026-07-27 16:05:11 +02:00
committed by Vasily Gorbik
parent 9ac687a280
commit 4133c9d3f3
1 changed files with 7 additions and 6 deletions
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13
arch/s390/kernel/text_amode31.S
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@@ -5,6 +5,7 @@
* Copyright IBM Corp. 2019
*/
#include <linux/cfi_types.h>
#include <linux/linkage.h>
#include <asm/asm-extable.h>
#include <asm/errno.h>
@@ -26,7 +27,7 @@
/*
* int _diag14_amode31(unsigned long rx, unsigned long ry1, unsigned long subcode)
*/
SYM_FUNC_START(_diag14_amode31)
SYM_TYPED_FUNC_START(_diag14_amode31)
lgr %r1,%r2
lgr %r2,%r3
lgr %r3,%r4
@@ -46,7 +47,7 @@ SYM_FUNC_END(_diag14_amode31)
/*
* int _diag210_amode31(struct diag210 *addr)
*/
SYM_FUNC_START(_diag210_amode31)
SYM_TYPED_FUNC_START(_diag210_amode31)
lgr %r1,%r2
lhi %r2,-1
sam31
@@ -64,7 +65,7 @@ SYM_FUNC_END(_diag210_amode31)
/*
* int diag8c(struct diag8c *addr, struct ccw_dev_id *devno, size_t len)
*/
SYM_FUNC_START(_diag8c_amode31)
SYM_TYPED_FUNC_START(_diag8c_amode31)
llgf %r3,0(%r3)
sam31
diag %r2,%r4,0x8c
@@ -77,7 +78,7 @@ SYM_FUNC_END(_diag8c_amode31)
/*
* int _diag26c_amode31(void *req, void *resp, enum diag26c_sc subcode)
*/
SYM_FUNC_START(_diag26c_amode31)
SYM_TYPED_FUNC_START(_diag26c_amode31)
lghi %r5,-EOPNOTSUPP
sam31
diag %r2,%r4,0x26c
@@ -91,7 +92,7 @@ SYM_FUNC_END(_diag26c_amode31)
/*
* void _diag0c_amode31(unsigned long rx)
*/
SYM_FUNC_START(_diag0c_amode31)
SYM_TYPED_FUNC_START(_diag0c_amode31)
sam31
diag %r2,%r2,0x0c
sam64
@@ -103,7 +104,7 @@ SYM_FUNC_END(_diag0c_amode31)
*
* Calls diag 308 subcode 1 and continues execution
*/
SYM_FUNC_START(_diag308_reset_amode31)
SYM_TYPED_FUNC_START(_diag308_reset_amode31)
larl %r4,ctlregs # Save control registers
stctg %c0,%c15,0(%r4)
lg %r2,0(%r4) # Disable lowcore protection