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 6/8] x86/platform/uv: Decode UVsystab Info
Date: Mon, 02 Sep 2019 19:18:21 -0500 [thread overview]
Message-ID: <20190903001816.427611357@stormcage.eag.rdlabs.hpecorp.net> (raw)
In-Reply-To: 20190903001815.504418099@stormcage.eag.rdlabs.hpecorp.net
[-- Attachment #1: decode-hubless-uvst --]
[-- Type: text/plain, Size: 1313 bytes --]
Decode the hubless UVsystab passed from BIOS to the kernel saving
pertinent info in a similar manner that hubbed UVsystabs are decoded.
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 | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
--- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c
+++ linux/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -1323,7 +1323,8 @@ static int __init decode_uv_systab(void)
struct uv_systab *st;
int i;
- if (uv_hub_info->hub_revision < UV4_HUB_REVISION_BASE)
+ /* Select only UV4 (hubbed or hubless) and higher */
+ if (is_uv_hubbed(-2) < uv(4) && is_uv_hubless(-2) < uv(4))
return 0; /* No extended UVsystab required */
st = uv_systab;
@@ -1574,8 +1575,19 @@ static __init int uv_system_init_hubless
/* Init kernel/BIOS interface */
rc = uv_bios_init();
+ if (rc < 0) {
+ pr_err("UV: BIOS init error:%d\n", rc);
+ return rc;
+ }
+
+ /* Process UVsystab */
+ rc = decode_uv_systab();
+ if (rc < 0) {
+ pr_err("UV: UVsystab decode error:%d\n", rc);
+ return rc;
+ }
- /* Create user access node if UVsystab available */
+ /* Create user access node */
if (rc >= 0)
uv_setup_proc_files(1);
--
next prev parent reply other threads:[~2019-09-03 0:19 UTC|newest]
Thread overview: 33+ 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 ` [PATCH 4/8] x86/platform/uv: Setup UV functions for Hubless UV Systems Mike Travis
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 ` Mike Travis [this message]
2019-09-03 6:22 ` [PATCH 6/8] x86/platform/uv: Decode UVsystab Info 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 6/8] x86/platform/uv: Decode UVsystab Info Mike Travis
2019-09-05 14:16 ` Greg KH
2019-09-05 14:47 ` Mike Travis
2019-09-05 16:43 ` Mike Travis
2019-09-05 16:57 ` Greg KH
2019-09-05 16:56 ` Greg KH
2019-09-05 21:40 ` Sasha Levin
2019-09-05 22:42 ` 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 6/8] x86/platform/uv: Decode UVsystab Info Mike Travis
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