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From: Mike Travis <mike.travis@hpe.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Borislav Petkov <bp@alien8.de>
Cc: Dimitri Sivanich <dimitri.sivanich@hpe.com>,
	Russ Anderson <russ.anderson@hpe.com>,
	Hedi Berriche <hedi.berriche@hpe.com>,
	Steve Wahl <steve.wahl@hpe.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Subject: [PATCH 4/8] x86/platform/uv: Setup UV functions for Hubless UV Systems
Date: Mon, 02 Sep 2019 19:18:19 -0500	[thread overview]
Message-ID: <20190903001816.151524458@stormcage.eag.rdlabs.hpecorp.net> (raw)
In-Reply-To: <20190903001815.504418099@stormcage.eag.rdlabs.hpecorp.net>

[-- Attachment #1: setup-hubless-init --]
[-- Type: text/plain, Size: 1643 bytes --]

Add more support for UV systems that do not contain a UV Hub (AKA
"hubless").  This update adds support for additional functions required:

    Use PCH NMI handler instead of a UV Hub NMI handler.

    Initialize the UV BIOS callback interface used to support specific
    UV functions.

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 |   20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

--- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c
+++ linux/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -1477,6 +1477,20 @@ static void __init build_socket_tables(v
 	}
 }
 
+/* Initialize UV hubless systems */
+static __init int uv_system_init_hubless(void)
+{
+	int rc;
+
+	/* Setup PCH NMI handler */
+	uv_nmi_setup_hubless();
+
+	/* Init kernel/BIOS interface */
+	rc = uv_bios_init();
+
+	return rc;
+}
+
 static void __init uv_system_init_hub(void)
 {
 	struct uv_hub_info_s hub_info = {0};
@@ -1616,8 +1630,8 @@ static void __init uv_system_init_hub(vo
 }
 
 /*
- * There is a small amount of UV specific code needed to initialize a
- * UV system that does not have a "UV HUB" (referred to as "hubless").
+ * There is a different code path needed to initialize a UV system that does
+ * not have a "UV HUB" (referred to as "hubless").
  */
 void __init uv_system_init(void)
 {
@@ -1627,7 +1641,7 @@ void __init uv_system_init(void)
 	if (is_uv_system())
 		uv_system_init_hub();
 	else
-		uv_nmi_setup_hubless();
+		uv_system_init_hubless();
 }
 
 apic_driver(apic_x2apic_uv_x);

-- 

  parent reply	other threads:[~2019-09-03  0:18 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-03  0:18 [PATCH 0/8] x86/platform/UV: Update UV Hubless System Support Mike Travis
2019-09-03  0:18 ` [PATCH 1/8] x86/platform/uv: Save OEM_ID from ACPI MADT probe Mike Travis
2019-09-03  0:18 ` [PATCH 2/8] x86/platform/uv: Return UV Hubless System Type Mike Travis
2019-09-03  6:49   ` Christoph Hellwig
2019-09-03 14:12     ` Mike Travis
2019-09-03 15:41       ` Christoph Hellwig
2019-09-03 18:49         ` Mike Travis
2019-09-04  6:50           ` Christoph Hellwig
2019-09-03  0:18 ` [PATCH 3/8] x86/platform/uv: Add return code to UV BIOS Init function Mike Travis
2019-09-03  0:18 ` Mike Travis [this message]
2019-09-03  0:18 ` [PATCH 5/8] x86/platform/uv: Add UV Hubbed/Hubless Proc FS Files Mike Travis
2019-09-03  6:50   ` Christoph Hellwig
2019-09-03  0:18 ` [PATCH 6/8] x86/platform/uv: Decode UVsystab Info Mike Travis
2019-09-03  6:22   ` Greg KH
2019-09-03  0:18 ` [PATCH 7/8] x86/platform/uv: Check EFI Boot to set reboot type Mike Travis
2019-09-03  0:18 ` [PATCH 8/8] x86/platform/uv: Account for UV Hubless in is_uvX_hub Ops Mike Travis
2019-09-03 16:19   ` Christoph Hellwig
2019-09-03 18:58     ` Mike Travis
2019-09-03 19:03       ` Mike Travis
2019-09-04  6:52       ` Christoph Hellwig
2019-09-04 10:18         ` Mike Travis
2019-09-03  7:47 ` [PATCH 0/8] x86/platform/UV: Update UV Hubless System Support Ingo Molnar
2019-09-03 14:17   ` Mike Travis
2019-09-05  8:19     ` Ingo Molnar
2019-09-05 13:02 Mike Travis
2019-09-05 13:02 ` [PATCH 4/8] x86/platform/uv: Setup UV functions for Hubless UV Systems Mike Travis
2019-09-05 18:47 [PATCH 0/8] x86/platform/UV: Update UV Hubless System Support Mike Travis
2019-09-05 18:47 ` [PATCH 4/8] x86/platform/uv: Setup UV functions for Hubless UV Systems Mike Travis
2019-09-10 14:31 [PATCH V2 0/8] x86/platform/UV: Update UV Hubless System Support Mike Travis
2019-09-10 14:31 ` [PATCH 4/8] x86/platform/uv: Setup UV functions for Hubless UV Systems Mike Travis
2019-09-10 14:46 [PATCH V2 0/8] x86/platform/UV: Update UV Hubless System Support Mike Travis
2019-09-10 14:46 ` [PATCH 4/8] x86/platform/uv: Setup UV functions for Hubless UV Systems Mike Travis
2019-09-10 14:58 [PATCH V2 0/8] x86/platform/UV: Update UV Hubless System Support Mike Travis
2019-09-10 14:58 ` [PATCH 4/8] x86/platform/uv: Setup UV functions for Hubless UV Systems Mike Travis
2019-09-11  6:07   ` Ingo Molnar
2019-09-11 20:44     ` Mike Travis
2019-09-11 20:58       ` Mike Travis

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