5.4-stable review patch. If anyone has any objections, please let me know.
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From: Helge Deller deller@kernel.org
commit d24449864da5838936669618356b0e30ca2999c3 upstream.
Currently the glibc isn't yet ported to 64-bit for hppa, so there is no usable userspace available yet. But it's possible to manually build a static 64-bit binary and run that for testing. One such 64-bit test program is available at http://ftp.parisc-linux.org/src/64bit.tar.gz and it shows various issues with the existing 64-bit syscall path in the kernel. This patch fixes those issues.
Signed-off-by: Helge Deller deller@gmx.de Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/parisc/kernel/syscall.S | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)
--- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S @@ -217,10 +217,10 @@ linux_gateway_entry:
#ifdef CONFIG_64BIT ldil L%sys_call_table, %r1 - or,= %r2,%r2,%r2 - addil L%(sys_call_table64-sys_call_table), %r1 + or,ev %r2,%r2,%r2 + ldil L%sys_call_table64, %r1 ldo R%sys_call_table(%r1), %r19 - or,= %r2,%r2,%r2 + or,ev %r2,%r2,%r2 ldo R%sys_call_table64(%r1), %r19 #else load32 sys_call_table, %r19 @@ -355,10 +355,10 @@ tracesys_next: extrd,u %r19,63,1,%r2 /* W hidden in bottom bit */
ldil L%sys_call_table, %r1 - or,= %r2,%r2,%r2 - addil L%(sys_call_table64-sys_call_table), %r1 + or,ev %r2,%r2,%r2 + ldil L%sys_call_table64, %r1 ldo R%sys_call_table(%r1), %r19 - or,= %r2,%r2,%r2 + or,ev %r2,%r2,%r2 ldo R%sys_call_table64(%r1), %r19 #else load32 sys_call_table, %r19 @@ -931,6 +931,8 @@ ENTRY(sys_call_table) END(sys_call_table)
#ifdef CONFIG_64BIT +#undef __SYSCALL_WITH_COMPAT +#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native) .align 8 ENTRY(sys_call_table64) #include <asm/syscall_table_64.h> /* 64-bit native syscalls */