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 04/16] x86/smpboot: SMP init no delay and not flush caches before sleep
Date: Sun, 23 Sep 2018 17:34:32 +0800 [thread overview]
Message-ID: <87000fa82e273f5967c908448414228faf61e077.1537533369.git.puwen@hygon.cn> (raw)
Message-ID: <20180923093432.vct9bIHgBgjxzxlPHM77K5w6mv5vBihln_AEzbwz_nU@z> (raw)
In-Reply-To: <cover.1537533368.git.puwen@hygon.cn>
The Hygon Dhyana CPU uses no delay in smp_quirk_init_udelay(),
and returns in mwait_play_dead() as AMD does.
Signed-off-by: Pu Wen <puwen@hygon.cn>
Reviewed-by: Borislav Petkov <bp@suse.de>
---
arch/x86/kernel/smpboot.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index f02ecaf..5369d7f 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -676,6 +676,7 @@ static void __init smp_quirk_init_udelay(void)
/* if modern processor, use no delay */
if (((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 == 6)) ||
+ ((boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) && (boot_cpu_data.x86 >= 0x18)) ||
((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) && (boot_cpu_data.x86 >= 0xF))) {
init_udelay = 0;
return;
@@ -1592,7 +1593,8 @@ static inline void mwait_play_dead(void)
void *mwait_ptr;
int i;
- if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
+ if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD ||
+ boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
return;
if (!this_cpu_has(X86_FEATURE_MWAIT))
return;
--
2.7.4
next prev parent reply other threads:[~2018-09-23 15:31 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 ` Pu Wen [this message]
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 ` [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 ` [PATCH v8 08/16] x86/apic: Add Hygon Dhyana support to APIC Pu Wen
2018-09-23 9:35 ` 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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87000fa82e273f5967c908448414228faf61e077.1537533369.git.puwen@hygon.cn \
--to=puwen@hygon.cn \
--cc=bp@alien8.de \
--cc=hpa@zytor.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=tglx@linutronix.de \
--cc=thomas.lendacky@amd.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).