Decode the hubless UVsystab passed from BIOS to the kernel saving pertinent info in a similar manner that hubbed UVsystabs are decoded.
Signed-off-by: Mike Travis mike.travis@hpe.com Reviewed-by: Steve Wahl steve.wahl@hpe.com Reviewed-by: Dimitri Sivanich dimitri.sivanich@hpe.com --- arch/x86/kernel/apic/x2apic_uv_x.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)
--- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c +++ linux/arch/x86/kernel/apic/x2apic_uv_x.c @@ -1323,7 +1323,8 @@ static int __init decode_uv_systab(void) struct uv_systab *st; int i;
- if (uv_hub_info->hub_revision < UV4_HUB_REVISION_BASE) + /* Select only UV4 (hubbed or hubless) and higher */ + if (is_uv_hubbed(-2) < uv(4) && is_uv_hubless(-2) < uv(4)) return 0; /* No extended UVsystab required */
st = uv_systab; @@ -1574,8 +1575,19 @@ static __init int uv_system_init_hubless
/* Init kernel/BIOS interface */ rc = uv_bios_init(); + if (rc < 0) { + pr_err("UV: BIOS init error:%d\n", rc); + return rc; + } + + /* Process UVsystab */ + rc = decode_uv_systab(); + if (rc < 0) { + pr_err("UV: UVsystab decode error:%d\n", rc); + return rc; + }
- /* Create user access node if UVsystab available */ + /* Create user access node */ if (rc >= 0) uv_setup_proc_files(1);
--