Hello there,
I'm trying to compile the (2.4.9-37) kernel on our S/390 (G46) in VM mode.
And I'm getting some problems (that I've fixed) but think should be
fixed at the source, but don't want to do a BugZilla report in case it's
me being silly.
Anyway, I'm using GCC 3.2 and I've made these changes (displayed in
sort-of-diff-style):
/usr/src/lxr/linux/2.4.9-37/include/asm/sigp.h, line 132
- #endif __SIGP__
+ #endif // __SIGP__
Ok, someone just forgot the //
/usr/src/lxr/linux/2.4.9-37/drivers/i2c/i2c-pcf8584.h, line 78
- #endif I2C_PCF8584_H
+ #endif // I2C_PCF8584_H
ditto
/usr/src/lxr/linux/2.4.9-37/include/asm/ebcdic.h, lines 24-39
extern __inline__
void codepage_convert(const __u8 *codepage, volatile __u8 * addr, int
nr)
{
if (nr <= 0)
return;
+ nr--;
__asm__ __volatile__(
" bras 1,1f\n"
" tr 0(1,%0),0(%2)\n"
"0: tr 0(256,%0),0(%2)\n"
" la %0,256(%0)\n"
"1: ahi %1,-256\n"
" jp 0b\n"
" ex %1,0(1)"
- : "+&a" (addr), "+&a" (nr-1)
+ : "+&a" (addr), "+&a" (nr)
: "a" (codepage) : "cc", "memory", "1" );
}
gcc doesn't like (nr-1) even though it's an input, because it's not an
lvalue. So I've changed (nr-1) to (nr) and added "nr--;" before the
assembly.
/usr/src/lxr/linux/2.4.9-37/Makefile
changed -O2 to -O1 in CFLAGS
because otherwise the assembly code generated from
arch/s390/kernel/debug.c has STCK instructions (like "STCK 0(%r12,%r2)")
which are not liked by the assembler, it would rather have something like
"STCK 0(%r12)".
/usr/src/lxr/linux/2.4.9-37/arch/s390/kernel/s390_ksyms.c:60
- EXPORT_SYMBOL_NOVERS(do_call_softirq);
+ // EXPORT_SYMBOL_NOVERS(do_call_softirq);
Commented this out and everything still works (mmm, hack).
Also, if SMP is ennabled, I get a
setup.c:508: invalid lvalue in unary `&'
error, which is because something is defined differently for SMP.
So there you go, I hope that makes sense.
One last question, is there a way (CVS maybe) to get the bleeding edge
kernel as it's being changed by the developers?
Ashley Chaloner.
(Department of Computer Science, Warwick University)
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