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x86/platform/uv: Log gap hole end size 

Show value of gap end in the kernel log which equates to number of physical
address bits used by system.

Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Steve Wahl <steve.wahl@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20220406195149.228164-4-steve.wahl@hpe.com
This commit is contained in:
Mike Travis 2022-04-06 14:51:49 -05:00 committed by Borislav Petkov
parent bb3ab81bdb
commit 327c348988
1 changed files with 6 additions and 2 deletions
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8
arch/x86/kernel/apic/x2apic_uv_x.c
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@ -1346,7 +1346,7 @@ static void __init decode_gam_params(unsigned long ptr)
static void __init decode_gam_rng_tbl(unsigned long ptr)
{
struct uv_gam_range_entry *gre = (struct uv_gam_range_entry *)ptr;
unsigned long lgre = 0;
unsigned long lgre = 0, gend = 0;
int index = 0;
int sock_min = 999999, pnode_min = 99999;
int sock_max = -1, pnode_max = -1;
@ -1380,6 +1380,9 @@ static void __init decode_gam_rng_tbl(unsigned long ptr)
flag, size, suffix[order],
gre->type, gre->nasid, gre->sockid, gre->pnode);
if (gre->type == UV_GAM_RANGE_TYPE_HOLE)
gend = (unsigned long)gre->limit << UV_GAM_RANGE_SHFT;
/* update to next range start */
lgre = gre->limit;
if (sock_min > gre->sockid)
@ -1397,7 +1400,8 @@ static void __init decode_gam_rng_tbl(unsigned long ptr)
_max_pnode = pnode_max;
_gr_table_len = index;
pr_info("UV: GRT: %d entries, sockets(min:%x,max:%x) pnodes(min:%x,max:%x)\n", index, _min_socket, _max_socket, _min_pnode, _max_pnode);
pr_info("UV: GRT: %d entries, sockets(min:%x,max:%x), pnodes(min:%x,max:%x), gap_end(%d)\n",
index, _min_socket, _max_socket, _min_pnode, _max_pnode, fls64(gend));
}
/* Walk through UVsystab decoding the fields */