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From: Pu Wen <puwen@hygon.cn>
To: bp@alien8.de, tglx@linutronix.de, mingo@redhat.com,
	hpa@zytor.com, x86@kernel.org, thomas.lendacky@amd.com
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
	Pu Wen <puwen@hygon.cn>
Subject: [PATCH v8 08/16] x86/apic: Add Hygon Dhyana support to APIC
Date: Sun, 23 Sep 2018 17:35:28 +0800	[thread overview]
Message-ID: <7a557265a8c7c9e842fe60f9d8e064458801aef3.1537533369.git.puwen@hygon.cn> (raw)
Message-ID: <20180923093528.8uki77z5zoU3W01C5vQulIexzCFWPyaz6CCk5kLxBmM@z> (raw)
In-Reply-To: <cover.1537533368.git.puwen@hygon.cn>

Add Hygon Dhyana support to the APIC subsystem as it uses modern APIC.
When running on 32 bit mode, bigsmp should be enabled if there are
more than 8 cores online.

Signed-off-by: Pu Wen <puwen@hygon.cn>
Reviewed-by: Borislav Petkov <bp@suse.de>
---
 arch/x86/kernel/apic/apic.c     | 7 +++++++
 arch/x86/kernel/apic/probe_32.c | 1 +
 2 files changed, 8 insertions(+)

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 84132ed..ab731ab 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -224,6 +224,11 @@ static int modern_apic(void)
 	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
 	    boot_cpu_data.x86 >= 0xf)
 		return 1;
+
+	/* Hygon systems use modern APIC */
+	if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
+		return 1;
+
 	return lapic_get_version() >= 0x14;
 }
 
@@ -1912,6 +1917,8 @@ static int __init detect_init_APIC(void)
 		    (boot_cpu_data.x86 >= 15))
 			break;
 		goto no_apic;
+	case X86_VENDOR_HYGON:
+		break;
 	case X86_VENDOR_INTEL:
 		if (boot_cpu_data.x86 == 6 || boot_cpu_data.x86 == 15 ||
 		    (boot_cpu_data.x86 == 5 && boot_cpu_has(X86_FEATURE_APIC)))
diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c
index 02e8acb..47ff297 100644
--- a/arch/x86/kernel/apic/probe_32.c
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -185,6 +185,7 @@ void __init default_setup_apic_routing(void)
 				break;
 			}
 			/* If P4 and above fall through */
+		case X86_VENDOR_HYGON:
 		case X86_VENDOR_AMD:
 			def_to_bigsmp = 1;
 		}
-- 
2.7.4

  parent reply	other threads:[~2018-09-23 15:32 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-23  9:30 [PATCH v8 00/16] Add support for Hygon Dhyana Family 18h processor Pu Wen
2018-09-23  9:30 ` Pu Wen
2018-09-23  9:33 ` [PATCH v8 01/16] x86/cpu: Create Hygon Dhyana architecture support file Pu Wen
2018-09-23  9:33   ` Pu Wen
2018-09-23  9:33 ` [PATCH v8 02/16] x86/cpu: Get cache info and setup cache cpumap for Hygon Dhyana Pu Wen
2018-09-23  9:33   ` Pu Wen
2018-09-23  9:34 ` [PATCH v8 03/16] x86/cpu/mtrr: Support TOP_MEM2 and get MTRR number Pu Wen
2018-09-23  9:34   ` Pu Wen
2018-09-23  9:34 ` [PATCH v8 04/16] x86/smpboot: SMP init no delay and not flush caches before sleep Pu Wen
2018-09-23  9:34   ` Pu Wen
2018-09-23  9:34 ` [PATCH v8 05/16] perf/x86: Add Hygon Dhyana support to PMU infrastructure Pu Wen
2018-09-23  9:34   ` Pu Wen
2018-09-23  9:35 ` [PATCH v8 06/16] x86/alternative: Init ideal_nops for Hygon Dhyana Pu Wen
2018-09-23  9:35   ` Pu Wen
2018-09-23  9:35 ` [PATCH v8 07/16] x86/pci: Add Hygon Dhyana support to PCI and north bridge Pu Wen
2018-09-23  9:35   ` Pu Wen
2018-09-23 11:10   ` Borislav Petkov
2018-09-23 11:10     ` Borislav Petkov
2018-09-23 12:54     ` Pu Wen
2018-09-23 12:54       ` Pu Wen
2018-09-24 15:24   ` Borislav Petkov
2018-09-24 15:24     ` Borislav Petkov
2018-09-25 12:27     ` Pu Wen
2018-09-25 12:27       ` Pu Wen
2018-09-25 12:30       ` Borislav Petkov
2018-09-25 12:30         ` Borislav Petkov
2018-09-25 12:57         ` Pu Wen
2018-09-25 12:57           ` Pu Wen
2018-09-25 14:45     ` [PATCH 1/2] x86/amd_nb: Add vendor checking for strict function access Pu Wen
2018-09-25 14:45       ` Pu Wen
2018-09-25 14:46     ` [PATCH 2/2] x86/pci: Add Hygon Dhyana support to PCI and north bridge Pu Wen
2018-09-25 14:46       ` Pu Wen
2018-09-23  9:35 ` Pu Wen [this message]
2018-09-23  9:35   ` [PATCH v8 08/16] x86/apic: Add Hygon Dhyana support to APIC Pu Wen
2018-09-23  9:35 ` [PATCH v8 09/16] x86/bugs: Add mitigation to spectre and no meltdown for Hygon Dhyana Pu Wen
2018-09-23  9:35   ` Pu Wen
2018-09-23  9:36 ` [PATCH v8 10/16] x86/mce: Add Hygon Dhyana support to MCE infrastructure Pu Wen
2018-09-23  9:36   ` Pu Wen
2018-09-23  9:36 ` [PATCH v8 11/16] x86/kvm: Add Hygon Dhyana support to KVM infrastructure Pu Wen
2018-09-23  9:36   ` Pu Wen
2018-09-23  9:36 ` [PATCH v8 12/16] x86/xen: Add Hygon Dhyana support to Xen Pu Wen
2018-09-23  9:36   ` Pu Wen
2018-09-23  9:37 ` [PATCH v8 13/16] ACPI, x86: Add Hygon Dhyana support Pu Wen
2018-09-23  9:37   ` Pu Wen
2018-09-23  9:37 ` [PATCH v8 14/16] cpufreq, " Pu Wen
2018-09-23  9:37   ` Pu Wen
2018-09-23  9:37 ` [PATCH v8 15/16] EDAC, amd64: " Pu Wen
2018-09-23  9:37   ` Pu Wen

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