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From: Andrea Arcangeli <aarcange@redhat.com>
To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Sean Christopherson <sean.j.christopherson@intel.com>
Subject: [PATCH 01/14] KVM: monolithic: x86: remove kvm.ko
Date: Sat, 28 Sep 2019 13:23:10 -0400	[thread overview]
Message-ID: <20190928172323.14663-2-aarcange@redhat.com> (raw)
In-Reply-To: <20190928172323.14663-1-aarcange@redhat.com>

This is the first commit of a patch series that aims to replace the
modular kvm.ko kernel module with a monolithic kvm-intel/kvm-amd
model. This change has the only possible cons of wasting some disk
space in /lib/modules/. The pros are that it saves CPUS and some minor
RAM which are more scarse resources than disk space.

The pointer to function virtual template model cannot provide any
runtime benefit because kvm-intel and kvm-amd can't be loaded at the
same time.

This removes kvm.ko and it links and duplicates all kvm.ko objects to
both kvm-amd and kvm-intel.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
---
 arch/x86/kvm/Makefile | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index 31ecf7a76d5a..68b81f381369 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -12,9 +12,8 @@ kvm-y			+= x86.o mmu.o emulate.o i8259.o irq.o lapic.o \
 			   i8254.o ioapic.o irq_comm.o cpuid.o pmu.o mtrr.o \
 			   hyperv.o page_track.o debugfs.o
 
-kvm-intel-y		+= vmx/vmx.o vmx/vmenter.o vmx/pmu_intel.o vmx/vmcs12.o vmx/evmcs.o vmx/nested.o
-kvm-amd-y		+= svm.o pmu_amd.o
+kvm-intel-y		+= vmx/vmx.o vmx/vmenter.o vmx/pmu_intel.o vmx/vmcs12.o vmx/evmcs.o vmx/nested.o $(kvm-y)
+kvm-amd-y		+= svm.o pmu_amd.o $(kvm-y)
 
-obj-$(CONFIG_KVM)	+= kvm.o
 obj-$(CONFIG_KVM_INTEL)	+= kvm-intel.o
 obj-$(CONFIG_KVM_AMD)	+= kvm-amd.o

  reply	other threads:[~2019-09-28 17:23 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-28 17:23 [PATCH 00/14] KVM monolithic v2 Andrea Arcangeli
2019-09-28 17:23 ` Andrea Arcangeli [this message]
2019-10-15  1:31   ` [PATCH 01/14] KVM: monolithic: x86: remove kvm.ko Sean Christopherson
2019-10-15  3:18     ` Sean Christopherson
2019-10-15  8:32       ` Paolo Bonzini
2019-09-28 17:23 ` [PATCH 02/14] KVM: monolithic: x86: disable linking vmx and svm at the same time into the kernel Andrea Arcangeli
2019-10-15  3:16   ` Sean Christopherson
2019-10-15  8:21     ` Paolo Bonzini
2019-10-15 15:23       ` Sean Christopherson
2019-09-28 17:23 ` [PATCH 03/14] KVM: monolithic: x86: convert the kvm_x86_ops and kvm_pmu_ops methods to external functions Andrea Arcangeli
2019-09-28 17:23 ` [PATCH 04/14] KVM: monolithic: x86: handle the request_immediate_exit variation Andrea Arcangeli
2019-09-28 17:23 ` [PATCH 05/14] KVM: monolithic: add more section prefixes in the KVM common code Andrea Arcangeli
2019-09-28 17:23 ` [PATCH 06/14] KVM: monolithic: x86: remove __exit section prefix from machine_unsetup Andrea Arcangeli
2019-09-28 17:23 ` [PATCH 07/14] KVM: monolithic: x86: remove __init section prefix from kvm_x86_cpu_has_kvm_support Andrea Arcangeli
2019-09-28 17:23 ` [PATCH 08/14] KVM: monolithic: x86: remove exports Andrea Arcangeli
2019-09-28 17:23 ` [PATCH 09/14] KVM: monolithic: remove exports from KVM common code Andrea Arcangeli
2019-09-28 17:23 ` [PATCH 10/14] KVM: monolithic: x86: drop the kvm_pmu_ops structure Andrea Arcangeli
2019-09-28 17:23 ` [PATCH 11/14] KVM: x86: optimize more exit handlers in vmx.c Andrea Arcangeli
2019-09-28 17:23 ` [PATCH 12/14] KVM: retpolines: x86: eliminate retpoline from vmx.c exit handlers Andrea Arcangeli
2019-10-15  8:28   ` Paolo Bonzini
2019-10-15 16:49     ` Andrea Arcangeli
2019-10-15 19:46       ` Paolo Bonzini
2019-10-15 20:35         ` Andrea Arcangeli
2019-10-15 22:22           ` Paolo Bonzini
2019-10-15 23:42             ` Andrea Arcangeli
2019-10-16  7:07               ` Paolo Bonzini
2019-10-16 16:50                 ` Andrea Arcangeli
2019-10-16 17:01                   ` Paolo Bonzini
2019-09-28 17:23 ` [PATCH 13/14] KVM: retpolines: x86: eliminate retpoline from svm.c " Andrea Arcangeli
2019-09-28 17:23 ` [PATCH 14/14] x86: retpolines: eliminate retpoline from msr event handlers Andrea Arcangeli

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