From: Ingo Molnar <mingo@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [GIT PULL] x86/platform changes for v5.2
Date: Mon, 6 May 2019 12:44:23 +0200 [thread overview]
Message-ID: <20190506104423.GA86522@gmail.com> (raw)
Linus,
Please pull the latest x86-platform-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-platform-for-linus
# HEAD: 14e581c381b942ce5463a7e61326d8ce1c843be7 x86/kvm: Make steal_time visible
Smaller update for Hyper-V to support EOI assist, plus LTO fixes.
Thanks,
Ingo
------------------>
Andi Kleen (2):
x86/hyperv: Make hv_vcpu_is_preempted() visible
x86/kvm: Make steal_time visible
Vitaly Kuznetsov (1):
x86/hyper-v: Implement EOI assist
arch/x86/hyperv/hv_apic.c | 5 +++++
arch/x86/hyperv/hv_spinlock.c | 2 +-
arch/x86/kernel/kvm.c | 2 +-
3 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c
index 8eb6fbee8e13..5c056b8aebef 100644
--- a/arch/x86/hyperv/hv_apic.c
+++ b/arch/x86/hyperv/hv_apic.c
@@ -86,6 +86,11 @@ static void hv_apic_write(u32 reg, u32 val)
static void hv_apic_eoi_write(u32 reg, u32 val)
{
+ struct hv_vp_assist_page *hvp = hv_vp_assist_page[smp_processor_id()];
+
+ if (hvp && (xchg(&hvp->apic_assist, 0) & 0x1))
+ return;
+
wrmsr(HV_X64_MSR_EOI, val, 0);
}
diff --git a/arch/x86/hyperv/hv_spinlock.c b/arch/x86/hyperv/hv_spinlock.c
index a861b0456b1a..07f21a06392f 100644
--- a/arch/x86/hyperv/hv_spinlock.c
+++ b/arch/x86/hyperv/hv_spinlock.c
@@ -56,7 +56,7 @@ static void hv_qlock_wait(u8 *byte, u8 val)
/*
* Hyper-V does not support this so far.
*/
-bool hv_vcpu_is_preempted(int vcpu)
+__visible bool hv_vcpu_is_preempted(int vcpu)
{
return false;
}
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 5c93a65ee1e5..3f0cc828cc36 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -67,7 +67,7 @@ static int __init parse_no_stealacc(char *arg)
early_param("no-steal-acc", parse_no_stealacc);
static DEFINE_PER_CPU_DECRYPTED(struct kvm_vcpu_pv_apf_data, apf_reason) __aligned(64);
-static DEFINE_PER_CPU_DECRYPTED(struct kvm_steal_time, steal_time) __aligned(64);
+DEFINE_PER_CPU_DECRYPTED(struct kvm_steal_time, steal_time) __aligned(64) __visible;
static int has_steal_clock = 0;
/*
next reply other threads:[~2019-05-06 10:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-06 10:44 Ingo Molnar [this message]
2019-05-06 23:40 ` [GIT PULL] x86/platform changes for v5.2 pr-tracker-bot
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