powerpc/virtex5: Fix Virtex5 machine check handling

commit 640d17d60e83401e10e66a0ab6e9e2d6350df656 upstream.

The 440x5 core in the Virtex5 uses the 440A type machine check
(ie, they have MCSRR0/MCSRR1). They thus need to call the
appropriate fixup function to hook the right variant of the
exception.

Without this, all machine checks become fatal due to loss
of context when entering the exception handler.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/arch/powerpc/kernel/cpu_setup_44x.S b/arch/powerpc/kernel/cpu_setup_44x.S
index 80cac984d85d06271a80d1d67cb02e08a057515c..f812452441ecc15f829b1001382b71f8f418457c 100644 (file)
--- a/arch/powerpc/kernel/cpu_setup_44x.S
+++ b/arch/powerpc/kernel/cpu_setup_44x.S
@@ -35,6 +35,7 @@ _GLOBAL(__setup_cpu_440grx)
 _GLOBAL(__setup_cpu_460ex)
 _GLOBAL(__setup_cpu_460gt)
        b       __init_fpu_44x
+_GLOBAL(__setup_cpu_440x5)
 _GLOBAL(__setup_cpu_440gx)
 _GLOBAL(__setup_cpu_440spe)
        b       __fixup_440A_mcheck

diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 25c273c761d19855f2d8861720c24f7cb095bb2f..2b88cae20552cc4c9ffe44fb17517b24ae0a74c0 100644 (file)
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -39,6 +39,7 @@ extern void __setup_cpu_440epx(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_440gx(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_440grx(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_440spe(unsigned long offset, struct cpu_spec* spec);
+extern void __setup_cpu_440x5(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_460ex(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_460gt(unsigned long offset, struct cpu_spec* spec);
 extern void __setup_cpu_603(unsigned long offset, struct cpu_spec* spec);
@@ -1463,6 +1464,8 @@ static struct cpu_spec __initdata cpu_specs[] = {
                .cpu_user_features      = COMMON_USER_BOOKE,
                .icache_bsize           = 32,
                .dcache_bsize           = 32,
+               .cpu_setup              = __setup_cpu_440x5,
+               .machine_check          = machine_check_440A,
                .platform               = "ppc440",
        },
        { /* 460EX */