linux-kernel - [PATCH 1/3] x86/platform/uv: Fix missing OEM_TABLE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20201105222741.157029-2-mike.travis@hpe.com>
Date:   Thu,  5 Nov 2020 16:27:39 -0600
From:   Mike Travis <mike.travis@....com>
To:     Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Steve Wahl <steve.wahl@....com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Cc:     Mike Travis <mike.travis@....com>,
        Dimitri Sivanich <dimitri.sivanich@....com>,
        Russ Anderson <russ.anderson@....com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] x86/platform/uv: Fix missing OEM_TABLE_ID

Testing shows a problem in that the OEM_TABLE_ID was missing for
hubless systems.  This is used to determine the APIC type (legacy or
extended).  Add the OEM_TABLE_ID to the early hubless processing.

Fixes: 1e61f5a95f191 ("Add and decode Arch Type in UVsystab")

Signed-off-by: Mike Travis <mike.travis@....com>
---
 arch/x86/kernel/apic/x2apic_uv_x.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 714233cee0b5..a5794794ea59 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -366,7 +366,7 @@ static int __init early_get_arch_type(void)
 	return ret;
 }
 
-static int __init uv_set_system_type(char *_oem_id)
+static int __init uv_set_system_type(char *_oem_id, char *_oem_table_id)
 {
 	/* Save OEM_ID passed from ACPI MADT */
 	uv_stringify(sizeof(oem_id), oem_id, _oem_id);
@@ -394,6 +394,9 @@ static int __init uv_set_system_type(char *_oem_id)
 		else
 			uv_hubless_system = 0x9;
 
+		/* Copy APIC type */
+		uv_stringify(sizeof(oem_table_id), oem_table_id, _oem_table_id);
+
 		pr_info("UV: OEM IDs %s/%s, SystemType %d, HUBLESS ID %x\n",
 			oem_id, oem_table_id, uv_system_type, uv_hubless_system);
 		return 0;
@@ -456,7 +459,7 @@ static int __init uv_acpi_madt_oem_check(char *_oem_id, char *_oem_table_id)
 	uv_cpu_info->p_uv_hub_info = &uv_hub_info_node0;
 
 	/* If not UV, return. */
-	if (likely(uv_set_system_type(_oem_id) == 0))
+	if (uv_set_system_type(_oem_id, _oem_table_id) == 0)
 		return 0;
 
 	/* Save and Decode OEM Table ID */
-- 
2.21.0