From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: x86@kernel.org
Cc: devel@linuxdriverproject.org, linux-kernel@vger.kernel.org,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Tianyu Lan <Tianyu.Lan@microsoft.com>,
"Michael Kelley (EOSG)" <Michael.H.Kelley@microsoft.com>
Subject: [PATCH 0/4] x86/hyper-v: optimize PV IPIs
Date: Fri, 22 Jun 2018 19:06:21 +0200 [thread overview]
Message-ID: <20180622170625.30688-1-vkuznets@redhat.com> (raw)
When reviewing my "x86/hyper-v: use cheaper HVCALL_FLUSH_VIRTUAL_ADDRESS_
{LIST,SPACE} hypercalls when possible" patch Michael suggested to apply the
same idea to PV IPIs. Here we go!
Despite what Hyper-V TLFS says about HVCALL_SEND_IPI hypercall, it can
actually be 'fast' (passing parameters through registers). Use that too.
This series can collide with my "KVM: x86: hyperv: PV IPI support for
Windows guests" series as I rename ipi_arg_non_ex/ipi_arg_ex structures
there. Depending on which one gets in first we may need to do tiny
adjustments.
Vitaly Kuznetsov (4):
x86/hyper-v: implement hv_do_fast_hypercall16
x86/hyper-v: use 'fast' hypercall for HVCALL_SEND_IPI
x86/hyper-v: use cheaper HVCALL_SEND_IPI hypercall when possible
x86/hyper-v: trace PV IPI send
arch/x86/hyperv/hv_apic.c | 57 ++++++++++++++++++++-----------------
arch/x86/include/asm/mshyperv.h | 34 ++++++++++++++++++++++
arch/x86/include/asm/trace/hyperv.h | 15 ++++++++++
3 files changed, 80 insertions(+), 26 deletions(-)
--
2.14.4
next reply other threads:[~2018-06-22 17:06 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-22 17:06 Vitaly Kuznetsov [this message]
2018-06-22 17:06 ` [PATCH 1/4] x86/hyper-v: implement hv_do_fast_hypercall16 Vitaly Kuznetsov
2018-07-03 7:03 ` [tip:x86/hyperv] x86/hyper-v: Implement hv_do_fast_hypercall16 tip-bot for Vitaly Kuznetsov
2018-06-22 17:06 ` [PATCH 2/4] x86/hyper-v: use 'fast' hypercall for HVCALL_SEND_IPI Vitaly Kuznetsov
2018-06-25 23:54 ` Michael Kelley (EOSG)
2018-07-03 7:04 ` [tip:x86/hyperv] x86/hyper-v: Use " tip-bot for Vitaly Kuznetsov
2018-06-22 17:06 ` [PATCH 3/4] x86/hyper-v: use cheaper HVCALL_SEND_IPI hypercall when possible Vitaly Kuznetsov
2018-06-26 0:03 ` Michael Kelley (EOSG)
2018-07-03 7:04 ` [tip:x86/hyperv] x86/hyper-v: Use " tip-bot for Vitaly Kuznetsov
2018-06-22 17:06 ` [PATCH 4/4] x86/hyper-v: trace PV IPI send Vitaly Kuznetsov
2018-07-03 7:05 ` [tip:x86/hyperv] x86/hyper-v: Trace " tip-bot for Vitaly Kuznetsov
2018-06-27 0:49 ` [PATCH 0/4] x86/hyper-v: optimize PV IPIs Wanpeng Li
2018-06-27 9:25 ` Vitaly Kuznetsov
2018-06-27 10:27 ` Wanpeng Li
2018-06-27 9:32 ` Vitaly Kuznetsov
2018-06-28 16:27 ` Vitaly Kuznetsov
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