[tip: x86/platform] x86/platform/uv: Log gap hole end size
From: tip-bot2 for Mike Travis
Date: Thu Apr 07 2022 - 11:48:37 EST
The following commit has been merged into the x86/platform branch of tip:
Commit-ID: 327c348988c6f0bacd7abd29c151f37bdf1e2a02
Gitweb: https://git.kernel.org/tip/327c348988c6f0bacd7abd29c151f37bdf1e2a02
Author: Mike Travis <mike.travis@xxxxxxx>
AuthorDate: Wed, 06 Apr 2022 14:51:49 -05:00
Committer: Borislav Petkov <bp@xxxxxxx>
CommitterDate: Thu, 07 Apr 2022 17:25:15 +02:00
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@xxxxxxx>
Signed-off-by: Steve Wahl <steve.wahl@xxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220406195149.228164-4-steve.wahl@xxxxxxx
---
arch/x86/kernel/apic/x2apic_uv_x.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index a6e9c27..4828552 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -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 */