linux-kernel - [tip: x86/platform] x86/platform/uv: Set section block size for hubless architectures

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Message-ID: <161520366063.398.17015803098326869178.tip-bot2@tip-bot2>
Date:   Mon, 08 Mar 2021 11:41:00 -0000
From:   "tip-bot2 for Mike Travis" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Mike Travis <mike.travis@....com>, Borislav Petkov <bp@...e.de>,
        Steve Wahl <steve.wahl@....com>, Russ Anderson <rja@....com>,
        x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: x86/platform] x86/platform/uv: Set section block size for
 hubless architectures

The following commit has been merged into the x86/platform branch of tip:

Commit-ID:     6840a150b9daf35e4d21ab9780d0a03b4ed74a5b
Gitweb:        https://git.kernel.org/tip/6840a150b9daf35e4d21ab9780d0a03b4ed74a5b
Author:        Mike Travis <mike.travis@....com>
AuthorDate:    Fri, 05 Mar 2021 10:28:53 -06:00
Committer:     Borislav Petkov <bp@...e.de>
CommitterDate: Mon, 08 Mar 2021 12:17:53 +01:00

x86/platform/uv: Set section block size for hubless architectures

Commit

  bbbd2b51a2aa ("x86/platform/UV: Use new set memory block size function")

added a call to set the block size value that is needed by the kernel
to set the boundaries in the section list. This was done for UV Hubbed
systems but missed in the UV Hubless setup. Fix that mistake by adding
that same set call for hubless systems, which support the same NVRAMs
and Intel BIOS, thus the same problem occurs.

 [ bp: Massage commit message. ]

Fixes: bbbd2b51a2aa ("x86/platform/UV: Use new set memory block size function")
Signed-off-by: Mike Travis <mike.travis@....com>
Signed-off-by: Borislav Petkov <bp@...e.de>
Reviewed-by: Steve Wahl <steve.wahl@....com>
Reviewed-by: Russ Anderson <rja@....com>
Link: https://lkml.kernel.org/r/20210305162853.299892-1-mike.travis@hpe.com
---
 arch/x86/kernel/apic/x2apic_uv_x.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 52bc217..c9ddd23 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -1671,6 +1671,9 @@ static __init int uv_system_init_hubless(void)
 	if (rc < 0)
 		return rc;
 
+	/* Set section block size for current node memory */
+	set_block_size();
+
 	/* Create user access node */
 	if (rc >= 0)
 		uv_setup_proc_files(1);