Linux v3.13-3995-g0dc3fd0
This commit is contained in:
Josh Boyer
parent
93a6365a2c
commit
d849e53944
@ -1,40 +0,0 @@
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Bugzilla: 924916
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Upstream-status: Queued for 3.14 in kvm tree
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From 989c6b34f6a9480e397b170cc62237e89bf4fdb9 Mon Sep 17 00:00:00 2001
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From: Marcelo Tosatti <mtosatti@redhat.com>
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Date: Thu, 19 Dec 2013 17:28:51 +0000
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Subject: KVM: MMU: handle invalid root_hpa at __direct_map
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It is possible for __direct_map to be called on invalid root_hpa
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(-1), two examples:
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1) try_async_pf -> can_do_async_pf
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-> vmx_interrupt_allowed -> nested_vmx_vmexit
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2) vmx_handle_exit -> vmx_interrupt_allowed -> nested_vmx_vmexit
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Then to load_vmcs12_host_state and kvm_mmu_reset_context.
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Check for this possibility, let fault exception be regenerated.
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BZ: https://bugzilla.redhat.com/show_bug.cgi?id=924916
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Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
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index 40772ef..31a5702 100644
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--- a/arch/x86/kvm/mmu.c
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+++ b/arch/x86/kvm/mmu.c
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@@ -2659,6 +2659,9 @@ static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write,
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int emulate = 0;
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gfn_t pseudo_gfn;
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+ if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
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+ return 0;
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+
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for_each_shadow_entry(vcpu, (u64)gfn << PAGE_SHIFT, iterator) {
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if (iterator.level == level) {
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mmu_set_spte(vcpu, iterator.sptep, ACC_ALL,
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--
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cgit v0.9.2
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@ -1,88 +0,0 @@
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Bugzilla: 1047892
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Upstream-status: Submitted for 3.14
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Path: news.gmane.org!not-for-mail
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From: Marcelo Tosatti <mtosatti@redhat.com>
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Newsgroups: gmane.comp.emulators.kvm.devel
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Subject: KVM: VMX: fix use after free of vmx->loaded_vmcs
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Date: Fri, 3 Jan 2014 17:00:51 -0200
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Cc: Jan Kiszka <jan.kiszka@web.de>, Paolo Bonzini <pbonzini@redhat.com>
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Archived-At: <http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/117837>
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After free_loaded_vmcs executes, the "loaded_vmcs" structure
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is kfreed, and now vmx->loaded_vmcs points to a kfreed area.
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Subsequent free_loaded_vmcs then attempts to manipulate
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vmx->loaded_vmcs.
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Switch the order to avoid the problem.
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https://bugzilla.redhat.com/show_bug.cgi?id=1047892
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Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
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index da7837e..2efa33f0 100644
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--- a/arch/x86/kvm/vmx.c
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+++ b/arch/x86/kvm/vmx.c
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@@ -7332,8 +7332,8 @@ static void vmx_free_vcpu(struct kvm_vcpu *vcpu)
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struct vcpu_vmx *vmx = to_vmx(vcpu);
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free_vpid(vmx);
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- free_nested(vmx);
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free_loaded_vmcs(vmx->loaded_vmcs);
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+ free_nested(vmx);
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kfree(vmx->guest_msrs);
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kvm_vcpu_uninit(vcpu);
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kmem_cache_free(kvm_vcpu_cache, vmx);
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--
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To unsubscribe from this list: send the line "unsubscribe kvm" in
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the body of a message to majordomo@vger.kernel.org
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More majordomo info at http://vger.kernel.org/majordomo-info.html
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@ -43,6 +43,7 @@ CONFIG_HVC_DRIVER=y
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CONFIG_HZ=100
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CONFIG_KVM=y
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CONFIG_KVM_ARM_MAX_VCPUS=8
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CONFIG_LOG_BUF_SHIFT=14
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CONFIG_NFS_ACL_SUPPORT=y
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@ -58,6 +58,7 @@ CONFIG_XEN_SYS_HYPERVISOR=y
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CONFIG_XEN_GNTDEV=y
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CONFIG_XEN_GRANT_DEV_ALLOC=m
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CONFIG_XEN_WDT=m
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# CONFIG_XEN_BALLOON is not set
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CONFIG_SERIAL_SAMSUNG=y
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CONFIG_SERIAL_SAMSUNG_CONSOLE=y
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@ -117,6 +117,7 @@ CONFIG_XEN_DEV_EVTCHN=m
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CONFIG_XEN_SYS_HYPERVISOR=y
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# CONFIG_XEN_MCE_LOG is not set
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# CONFIG_XEN_STUB is not set
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# CONFIG_XEN_PVH is not set
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CONFIG_PROVIDE_OHCI1394_DMA_INIT=y
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19
kernel.spec
19
kernel.spec
@ -61,7 +61,7 @@ Summary: The Linux kernel
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# The rc snapshot level
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%define rcrev 0
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# The git snapshot level
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%define gitrev 5
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%define gitrev 6
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# Set rpm version accordingly
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%define rpmversion 3.%{upstream_sublevel}.0
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%endif
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@ -403,7 +403,7 @@ Group: System Environment/Kernel
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License: GPLv2 and Redistributable, no modification permitted
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URL: http://www.kernel.org/
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Version: %{rpmversion}
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Release: %{pkg_release}
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Release: %{pkg_release}.1
|
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# DO NOT CHANGE THE 'ExclusiveArch' LINE TO TEMPORARILY EXCLUDE AN ARCHITECTURE BUILD.
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# SET %%nobuildarches (ABOVE) INSTEAD
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ExclusiveArch: noarch %{all_x86} x86_64 ppc ppc64 ppc64p7 s390 s390x %{arm} aarch64
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@ -632,12 +632,6 @@ Patch25168: rpc_pipe-fix-cleanup-of-dummy-gssd-directory-when-notification-fails
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#rhbz 1030802
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Patch25171: elantech-Properly-differentiate-between-clickpads-an.patch
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#rhbz 924916
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Patch25179: KVM-MMU-handle-invalid-root_hpa-at-__direct_map.patch
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#rhbz 1047892
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Patch25180: KVM-VMX-fix-use-after-free-of-vmx-loaded_vmcs.patch
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#rhbz 1003167 1046238
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Patch25181: 0001-Input-wacom-make-sure-touch_max-is-set-for-touch-dev.patch
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Patch25182: 0002-Input-wacom-add-support-for-three-new-Intuos-devices.patch
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@ -1304,12 +1298,6 @@ ApplyPatch rpc_pipe-fix-cleanup-of-dummy-gssd-directory-when-notification-fails.
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#rhbz 1030802
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ApplyPatch elantech-Properly-differentiate-between-clickpads-an.patch
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#rhbz 924916
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ApplyPatch KVM-MMU-handle-invalid-root_hpa-at-__direct_map.patch
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#rhbz 1047892
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ApplyPatch KVM-VMX-fix-use-after-free-of-vmx-loaded_vmcs.patch
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#rhbz 1003167 1046238
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ApplyPatch 0001-Input-wacom-make-sure-touch_max-is-set-for-touch-dev.patch
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ApplyPatch 0002-Input-wacom-add-support-for-three-new-Intuos-devices.patch
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@ -2100,6 +2088,9 @@ fi
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# ||----w |
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# || ||
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%changelog
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* Thu Jan 23 2014 Josh Boyer <jwboyer@fedoraproject.org> - 3.14.0-0.rc0.git6.1.1
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- Linux v3.13-3995-g0dc3fd0
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* Thu Jan 23 2014 Josh Boyer <jwboyer@fedoraproject.org> - 3.14.0-0.rc0.git5.1
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- Linux v3.13-3667-ge1ba845
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|
||||
|
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@ -1,31 +1,31 @@
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Date: Thu, 23 Jan 2014 10:48:04 +0100
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From: Peter Zijlstra <peterz@infradead.org>
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||||
To: Markus Trippelsdorf <markus@trippelsdorf.de>
|
||||
Cc: Sasha Levin <sasha.levin@oracle.com>,
|
||||
@ -39,10 +39,8 @@ Cc: Sasha Levin <sasha.levin@oracle.com>,
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||||
Andy Lutomirski <luto@amacapital.net>,
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||||
linux-kernel@vger.kernel.org, dyoung@redhat.com
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||||
Subject: Re: [PATCH 13/15] sched: Use a static_key for sched_clock_stable
|
||||
Message-ID: <20140122210814.GC9481@laptop.programming.kicks-ass.net>
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References: <20140122120757.GL31570@twins.programming.kicks-ass.net>
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<20140122122609.GA392@x4>
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<20140122123022.GN31570@twins.programming.kicks-ass.net>
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Message-ID: <20140123094804.GP30183@twins.programming.kicks-ass.net>
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References: <20140122123022.GN31570@twins.programming.kicks-ass.net>
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||||
<20140122131456.GA389@x4>
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||||
<52DFD50E.800@oracle.com>
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||||
<20140122183538.GA389@x4>
|
||||
@ -50,74 +48,67 @@ References: <20140122120757.GL31570@twins.programming.kicks-ass.net>
|
||||
<20140122190905.GA391@x4>
|
||||
<20140122191254.GA390@x4>
|
||||
<20140122201605.GU11314@laptop.programming.kicks-ass.net>
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||||
<20140122210814.GC9481@laptop.programming.kicks-ass.net>
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<20140122211740.GA391@x4>
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In-Reply-To: <20140122201605.GU11314@laptop.programming.kicks-ass.net>
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In-Reply-To: <20140122211740.GA391@x4>
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||||
On Wed, Jan 22, 2014 at 10:17:40PM +0100, Markus Trippelsdorf wrote:
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||||
> Yes. Thanks Peter.
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||||
>
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||||
> I think its the right region to look through. My current suspect is the
|
||||
> linear continuity fit with the initial 'random' multiplier.
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||||
>
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||||
> That initial 'random' multiplier can get us quite high, and we'll fit
|
||||
> the function to match that but continue at a sane rate.
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>
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||||
> I'll try and prod a little more later this evening as time permits.
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Does this cure things?
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||||
Ah much simpler patch that should have the same effect:
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||||
---
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arch/x86/kernel/tsc.c | 11 +++++++----
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1 file changed, 7 insertions(+), 4 deletions(-)
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Subject: sched/x86/tsc: Initialize multiplier to 0
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From: Peter Zijlstra <peterz@infradead.org>
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||||
Date: Wed, 22 Jan 2014 22:08:14 +0100
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||||
Since we keep the clock value linearly continuous on frequency change,
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make sure the initial multiplier is 0, such that out initial value is
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0. Without this we compute the initial value at whatever the TSC has
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managed to reach since power-on.
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Fixes: 20d1c86a57762 ("sched/clock, x86: Rewrite cyc2ns() to avoid the need to disable IRQs")
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Cc: lenb@kernel.org
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||||
Cc: rjw@rjwysocki.net
|
||||
Cc: Eliezer Tamir <eliezer.tamir@linux.intel.com>
|
||||
Cc: rui.zhang@intel.com
|
||||
Cc: jacob.jun.pan@linux.intel.com
|
||||
Cc: Mike Galbraith <bitbucket@online.de>
|
||||
Cc: Ingo Molnar <mingo@kernel.org>
|
||||
Cc: hpa@zytor.com
|
||||
Cc: paulmck@linux.vnet.ibm.com
|
||||
Cc: Thomas Gleixner <tglx@linutronix.de>
|
||||
Cc: John Stultz <john.stultz@linaro.org>
|
||||
Cc: Andy Lutomirski <luto@amacapital.net>
|
||||
Cc: Arjan van de Ven <arjan@linux.intel.com>
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||||
Cc: Sasha Levin <sasha.levin@oracle.com>
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||||
Cc: dyoung@redhat.com
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||||
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
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Signed-off-by: Peter Zijlstra <peterz@infradead.org>
|
||||
---
|
||||
arch/x86/kernel/tsc.c | 2 +-
|
||||
1 file changed, 1 insertion(+), 1 deletion(-)
|
||||
|
||||
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
|
||||
index a3acbac2ee72..bb04148c5fe0 100644
|
||||
--- a/arch/x86/kernel/tsc.c
|
||||
+++ b/arch/x86/kernel/tsc.c
|
||||
@@ -237,7 +237,7 @@ static inline unsigned long long cycles_2_ns(unsigned long long cyc)
|
||||
/* XXX surely we already have this someplace in the kernel?! */
|
||||
#define DIV_ROUND(n, d) (((n) + ((d) / 2)) / (d))
|
||||
@@ -180,7 +180,7 @@ static void cyc2ns_write_end(int cpu, st
|
||||
|
||||
-static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu)
|
||||
+static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu, bool origin)
|
||||
static void cyc2ns_data_init(struct cyc2ns_data *data)
|
||||
{
|
||||
unsigned long long tsc_now, ns_now;
|
||||
struct cyc2ns_data *data;
|
||||
@@ -252,7 +252,10 @@ static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu)
|
||||
data = cyc2ns_write_begin(cpu);
|
||||
|
||||
rdtscll(tsc_now);
|
||||
- ns_now = cycles_2_ns(tsc_now);
|
||||
+ if (origin)
|
||||
+ ns_now = 0;
|
||||
+ else
|
||||
+ ns_now = cycles_2_ns(tsc_now);
|
||||
|
||||
/*
|
||||
* Compute a new multiplier as per the above comment and ensure our
|
||||
@@ -926,7 +929,7 @@ static int time_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
|
||||
mark_tsc_unstable("cpufreq changes");
|
||||
}
|
||||
|
||||
- set_cyc2ns_scale(tsc_khz, freq->cpu);
|
||||
+ set_cyc2ns_scale(tsc_khz, freq->cpu, false);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -1199,7 +1202,7 @@ void __init tsc_init(void)
|
||||
*/
|
||||
for_each_possible_cpu(cpu) {
|
||||
cyc2ns_init(cpu);
|
||||
- set_cyc2ns_scale(cpu_khz, cpu);
|
||||
+ set_cyc2ns_scale(cpu_khz, cpu, true);
|
||||
}
|
||||
|
||||
if (tsc_disabled > 0)
|
||||
- data->cyc2ns_mul = 1U << CYC2NS_SCALE_FACTOR;
|
||||
+ data->cyc2ns_mul = 0;
|
||||
data->cyc2ns_shift = CYC2NS_SCALE_FACTOR;
|
||||
data->cyc2ns_offset = 0;
|
||||
data->__count = 0;
|
||||
--
|
||||
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|
||||
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|
||||
|
||||
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Reference in New Issue
Block a user