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Message-ID: <tip-f2bffe8a3eef42a1cd3393d56acd9fe598d2119c@git.kernel.org>
Date: Thu, 5 Nov 2015 06:45:11 -0800
From: tip-bot for Thomas Gleixner <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: mingo@...nel.org, daniel@...ascale.com,
torvalds@...ux-foundation.org, hpa@...or.com, tglx@...utronix.de,
bp@...en.de, linux-kernel@...r.kernel.org, travis@....com,
peterz@...radead.org
Subject: [tip:x86/apic] x86/apic: Implement single IPI for x2apic_phys
Commit-ID: f2bffe8a3eef42a1cd3393d56acd9fe598d2119c
Gitweb: http://git.kernel.org/tip/f2bffe8a3eef42a1cd3393d56acd9fe598d2119c
Author: Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Wed, 4 Nov 2015 22:57:04 +0000
Committer: Thomas Gleixner <tglx@...utronix.de>
CommitDate: Thu, 5 Nov 2015 13:07:53 +0100
x86/apic: Implement single IPI for x2apic_phys
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Ingo Molnar <mingo@...nel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Borislav Petkov <bp@...en.de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Mike Travis <travis@....com>
Cc: Daniel J Blueman <daniel@...ascale.com>
Link: http://lkml.kernel.org/r/20151104220849.296438009@linutronix.de
---
arch/x86/kernel/apic/x2apic_phys.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c
index 662e915..a1242e2 100644
--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -36,6 +36,14 @@ static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
return x2apic_enabled() && (x2apic_phys || x2apic_fadt_phys());
}
+static void x2apic_send_IPI(int cpu, int vector)
+{
+ u32 dest = per_cpu(x86_cpu_to_apicid, cpu);
+
+ x2apic_wrmsr_fence();
+ __x2apic_send_IPI_dest(dest, vector, APIC_DEST_PHYSICAL);
+}
+
static void
__x2apic_send_IPI_mask(const struct cpumask *mask, int vector, int apic_dest)
{
@@ -122,6 +130,7 @@ static struct apic apic_x2apic_phys = {
.cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and,
+ .send_IPI = x2apic_send_IPI,
.send_IPI_mask = x2apic_send_IPI_mask,
.send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself,
.send_IPI_allbutself = x2apic_send_IPI_allbutself,
--
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