linux-kernel - [PATCH v2] x86/platform/uv: Add set of kernel block size for hubless arches

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Message-Id: <20210305162853.299892-1-mike.travis@hpe.com>
Date:   Fri,  5 Mar 2021 10:28:53 -0600
From:   Mike Travis <mike.travis@....com>
To:     Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Steve Wahl <steve.wahl@....com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Cc:     Mike Travis <mike.travis@....com>, Russ Anderson <rja@....com>,
        Dimitri Sivanich <dimitri.sivanich@....com>,
        Russ Anderson <russ.anderson@....com>,
        "H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH v2] x86/platform/uv: Add set of kernel block size for hubless arches

The commit below 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.

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

Signed-off-by: Mike Travis <mike.travis@....com>
Reviewed-by: Steve Wahl <steve.wahl@....com>
Reviewed-by: Russ Anderson <rja@....com>
---
v2: Change patch description to match requirements.
---
 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 52bc217ca8c3..c9ddd233e32f 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);
-- 
2.21.0