[PATCH 5.13 0/2] 5.13.1-rc1 review

[PATCH 5.13 0/2] 5.13.1-rc1 review

[Sasha Levin]

This is the start of the stable review cycle for the 5.13.1 release.
There are 2 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
Anything received after that time might be too late.

The whole patch series can be found in one patch at:
        https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-5.13.y&id2=v5.13
or in the git tree and branch at:
        git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.13.y
and the diffstat can be found below.

Thanks,
Sasha

-------------
Pseudo-Shortlog of commits:

Sasha Levin (1):
  Linux 5.13.1-rc1

Sean Christopherson (1):
  Revert "KVM: x86/mmu: Drop kvm_mmu_extended_role.cr4_la57 hack"

 Makefile                        | 4 ++--
 arch/x86/include/asm/kvm_host.h | 1 +
 arch/x86/kvm/mmu/mmu.c          | 1 +
 3 files changed, 4 insertions(+), 2 deletions(-)

-- 
2.30.2

[PATCH 5.13 1/2] Revert "KVM: x86/mmu: Drop kvm_mmu_extended_role.cr4_la57 hack"

[Sasha Levin]

From: Sean Christopherson <seanjc@google.com>

commit f71a53d1180d5ecc346f0c6a23191d837fe2871b upstream.

Restore CR4.LA57 to the mmu_role to fix an amusing edge case with nested
virtualization.  When KVM (L0) is using TDP, CR4.LA57 is not reflected in
mmu_role.base.level because that tracks the shadow root level, i.e. TDP
level.  Normally, this is not an issue because LA57 can't be toggled
while long mode is active, i.e. the guest has to first disable paging,
then toggle LA57, then re-enable paging, thus ensuring an MMU
reinitialization.

But if L1 is crafty, it can load a new CR4 on VM-Exit and toggle LA57
without having to bounce through an unpaged section.  L1 can also load a
new CR3 on exit, i.e. it doesn't even need to play crazy paging games, a
single entry PML5 is sufficient.  Such shenanigans are only problematic
if L0 and L1 use TDP, otherwise L1 and L2 share an MMU that gets
reinitialized on nested VM-Enter/VM-Exit due to mmu_role.base.guest_mode.

Note, in the L2 case with nested TDP, even though L1 can switch between
L2s with different LA57 settings, thus bypassing the paging requirement,
in that case KVM's nested_mmu will track LA57 in base.level.

This reverts commit 8053f924cad30bf9f9a24e02b6c8ddfabf5202ea.

Fixes: 8053f924cad3 ("KVM: x86/mmu: Drop kvm_mmu_extended_role.cr4_la57 hack")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622175739.3610207-6-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/include/asm/kvm_host.h | 1 +
 arch/x86/kvm/mmu/mmu.c          | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 9c7ced0e3171..682e82956ea5 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -320,6 +320,7 @@ union kvm_mmu_extended_role {
 		unsigned int cr4_pke:1;
 		unsigned int cr4_smap:1;
 		unsigned int cr4_smep:1;
+		unsigned int cr4_la57:1;
 		unsigned int maxphyaddr:6;
 	};
 };
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 8d5876dfc6b7..a54f72c31be9 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -4476,6 +4476,7 @@ static union kvm_mmu_extended_role kvm_calc_mmu_role_ext(struct kvm_vcpu *vcpu)
 	ext.cr4_smap = !!kvm_read_cr4_bits(vcpu, X86_CR4_SMAP);
 	ext.cr4_pse = !!is_pse(vcpu);
 	ext.cr4_pke = !!kvm_read_cr4_bits(vcpu, X86_CR4_PKE);
+	ext.cr4_la57 = !!kvm_read_cr4_bits(vcpu, X86_CR4_LA57);
 	ext.maxphyaddr = cpuid_maxphyaddr(vcpu);
 
 	ext.valid = 1;
-- 
2.30.2

[PATCH 5.13 2/2] Linux 5.13.1-rc1

[Sasha Levin]

Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 0565caea0362..56fce101656f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 5
 PATCHLEVEL = 13
-SUBLEVEL = 0
-EXTRAVERSION =
+SUBLEVEL = 1
+EXTRAVERSION = -rc1
 NAME = Opossums on Parade
 
 # *DOCUMENTATION*
-- 
2.30.2

Re: [PATCH 5.13 0/2] 5.13.1-rc1 review

[Thomas Backlund]

Den 5.7.2021 kl. 13:56, skrev Sasha Levin:
> 
> This is the start of the stable review cycle for the 5.13.1 release.
> There are 2 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
>          https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-5.13.y&id2=v5.13
> or in the git tree and branch at:
>          git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.13.y
> and the diffstat can be found below.
> 
> Thanks,
> Sasha
>

This one should be added  too:

 From 66d9282523b3228183b14d9f812872dd2620704d Mon Sep 17 00:00:00 2001
From: Mel Gorman <mgorman@techsingularity.net>
Date: Mon, 28 Jun 2021 16:02:19 +0100
Subject: [PATCH] mm/page_alloc: Correct return value of populated 
elements if
  bulk array is populated


to unbreak nfs in 5.13 series ...

the cause and fix is confirmed in several threads both on lkml and stable@


--
Thomas

Re: [PATCH 5.13 0/2] 5.13.1-rc1 review

[Greg KH]

On Mon, Jul 05, 2021 at 03:13:57PM +0300, Thomas Backlund wrote:
> Den 5.7.2021 kl. 13:56, skrev Sasha Levin:
> > 
> > This is the start of the stable review cycle for the 5.13.1 release.
> > There are 2 patches in this series, all will be posted as a response
> > to this one.  If anyone has any issues with these being applied, please
> > let me know.
> > 
> > Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
> > Anything received after that time might be too late.
> > 
> > The whole patch series can be found in one patch at:
> >          https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-5.13.y&id2=v5.13
> > or in the git tree and branch at:
> >          git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.13.y
> > and the diffstat can be found below.
> > 
> > Thanks,
> > Sasha
> > 
> 
> This one should be added  too:
> 
> From 66d9282523b3228183b14d9f812872dd2620704d Mon Sep 17 00:00:00 2001
> From: Mel Gorman <mgorman@techsingularity.net>
> Date: Mon, 28 Jun 2021 16:02:19 +0100
> Subject: [PATCH] mm/page_alloc: Correct return value of populated elements
> if
>  bulk array is populated
> 
> 
> to unbreak nfs in 5.13 series ...
> 
> the cause and fix is confirmed in several threads both on lkml and stable@

Now queued up, thanks.

greg k-h

RE: [PATCH 5.13 0/2] 5.13.1-rc1 review

[Fox Chen]

On Mon,  5 Jul 2021 06:56:54 -0400, Sasha Levin <sashal@kernel.org> wrote:
> 
> This is the start of the stable review cycle for the 5.13.1 release.
> There are 2 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
>         https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-5.13.y&id2=v5.13
> or in the git tree and branch at:
>         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.13.y
> and the diffstat can be found below.
> 
> Thanks,
> Sasha
> 

5.13.1-rc1 Successfully Compiled and booted on my Raspberry PI 4b (8g) (bcm2711)
                
Tested-by: Fox Chen <foxhlchen@gmail.com>

Re: [PATCH 5.13 0/2] 5.13.1-rc1 review

[Guenter Roeck]

On Mon, Jul 05, 2021 at 06:56:54AM -0400, Sasha Levin wrote:
> 
> This is the start of the stable review cycle for the 5.13.1 release.
> There are 2 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
> Anything received after that time might be too late.
> 

Build results:
	total: 151 pass: 151 fail: 0
Qemu test results:
	total: 462 pass: 462 fail: 0

Tested-by: Guenter Roeck <linux@roeck-us.net>

Guenter

Re: [PATCH 5.13 0/2] 5.13.1-rc1 review

[Naresh Kamboju]

On Mon, 5 Jul 2021 at 16:27, Sasha Levin <sashal@kernel.org> wrote:
>
>
> This is the start of the stable review cycle for the 5.13.1 release.
> There are 2 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
>         https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-5.13.y&id2=v5.13
> or in the git tree and branch at:
>         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.13.y
> and the diffstat can be found below.
>
> Thanks,
> Sasha

Results from Linaro’s test farm.
No regressions on arm64, arm, x86_64, and i386.

Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>

## Build
* kernel: 5.13.1-rc1
* git: ['https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git',
'https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc']
* git branch: linux-5.13.y
* git commit: eedde12f53553760b1f31f52f1ddf4445528ca23
* git describe: v5.13-3-geedde12f5355
* test details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.13.y/build/v5.13-3-geedde12f5355

## No regressions (compared to v5.13-2-g58f1766113f0)


## No fixes (compared to v5.13-2-g58f1766113f0)


## Test result summary
 total: 84198, pass: 69181, fail: 2092, skip: 11875, xfail: 1050,

## Build Summary
* arc: 10 total, 10 passed, 0 failed
* arm: 193 total, 193 passed, 0 failed
* arm64: 27 total, 27 passed, 0 failed
* dragonboard-410c: 1 total, 1 passed, 0 failed
* hi6220-hikey: 1 total, 1 passed, 0 failed
* i386: 26 total, 26 passed, 0 failed
* juno-r2: 1 total, 1 passed, 0 failed
* mips: 45 total, 45 passed, 0 failed
* parisc: 9 total, 9 passed, 0 failed
* powerpc: 27 total, 27 passed, 0 failed
* riscv: 21 total, 21 passed, 0 failed
* s390: 18 total, 18 passed, 0 failed
* sh: 18 total, 18 passed, 0 failed
* sparc: 9 total, 9 passed, 0 failed
* x15: 1 total, 0 passed, 1 failed
* x86: 1 total, 1 passed, 0 failed
* x86_64: 27 total, 27 passed, 0 failed

## Test suites summary
* fwts
* igt-gpu-tools
* install-android-platform-tools-r2600
* kselftest-
* kselftest-android
* kselftest-bpf
* kselftest-breakpoints
* kselftest-capabilities
* kselftest-cgroup
* kselftest-clone3
* kselftest-core
* kselftest-cpu-hotplug
* kselftest-cpufreq
* kselftest-drivers
* kselftest-efivarfs
* kselftest-filesystems
* kselftest-firmware
* kselftest-fpu
* kselftest-futex
* kselftest-gpio
* kselftest-intel_pstate
* kselftest-ipc
* kselftest-ir
* kselftest-kcmp
* kselftest-kexec
* kselftest-kvm
* kselftest-lib
* kselftest-livepatch
* kselftest-lkdtm
* kselftest-membarrier
* kselftest-memfd
* kselftest-memory-hotplug
* kselftest-mincore
* kselftest-mount
* kselftest-mqueue
* kselftest-net
* kselftest-netfilter
* kselftest-nsfs
* kselftest-openat2
* kselftest-pid_namespace
* kselftest-pidfd
* kselftest-proc
* kselftest-pstore
* kselftest-ptrace
* kselftest-rseq
* kselftest-rtc
* kselftest-seccomp
* kselftest-sigaltstack
* kselftest-size
* kselftest-splice
* kselftest-static_keys
* kselftest-sync
* kselftest-sysctl
* kselftest-tc-testing
* kselftest-timens
* kselftest-timers
* kselftest-tmpfs
* kselftest-tpm2
* kselftest-user
* kselftest-vm
* kselftest-vsyscall-mode-native-
* kselftest-vsyscall-mode-none-
* kselftest-x86
* kselftest-zram
* kunit
* kvm-unit-tests
* libgpiod
* libhugetlbfs
* linux-log-parser
* ltp-cap_bounds-tests
* ltp-commands-tests
* ltp-containers-tests
* ltp-controllers-tests
* ltp-cpuhotplug-tests
* ltp-crypto-tests
* ltp-cve-tests
* ltp-dio-tests
* ltp-fcntl-locktests-tests
* ltp-filecaps-tests
* ltp-fs-tests
* ltp-fs_bind-tests
* ltp-fs_perms_simple-tests
* ltp-fsx-tests
* ltp-hugetlb-tests
* ltp-io-tests
* ltp-ipc-tests
* ltp-math-tests
* ltp-mm-tests
* ltp-nptl-tests
* ltp-open-posix-tests
* ltp-pty-tests
* ltp-sched-tests
* ltp-securebits-tests
* ltp-syscalls-tests
* ltp-tracing-tests
* network-basic-tests
* packetdrill
* perf
* rcutorture
* ssuite
* v4l2-compliance

--
Linaro LKFT
https://lkft.linaro.org

Re: [PATCH 5.13 0/2] 5.13.1-rc1 review

[Shuah Khan]

On 7/5/21 4:56 AM, Sasha Levin wrote:
> 
> This is the start of the stable review cycle for the 5.13.1 release.
> There are 2 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
>          https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-5.13.y&id2=v5.13
> or in the git tree and branch at:
>          git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.13.y
> and the diffstat can be found below.
> 
> Thanks,
> Sasha
> 

Compiled and booted on my test system. No dmesg regressions.

Tested-by: Shuah Khan <skhan@linuxfoundation.org>

thanks,
-- Shuah

Re: [PATCH 5.13 0/2] 5.13.1-rc1 review

[Sasha Levin]

On Mon, Jul 05, 2021 at 11:46:51AM -0700, Fox Chen wrote:
>On Mon,  5 Jul 2021 06:56:54 -0400, Sasha Levin <sashal@kernel.org> wrote:
>>
>> This is the start of the stable review cycle for the 5.13.1 release.
>> There are 2 patches in this series, all will be posted as a response
>> to this one.  If anyone has any issues with these being applied, please
>> let me know.
>>
>> Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
>> Anything received after that time might be too late.
>>
>> The whole patch series can be found in one patch at:
>>         https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-5.13.y&id2=v5.13
>> or in the git tree and branch at:
>>         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.13.y
>> and the diffstat can be found below.
>>
>> Thanks,
>> Sasha
>>
>
>5.13.1-rc1 Successfully Compiled and booted on my Raspberry PI 4b (8g) (bcm2711)
>
>Tested-by: Fox Chen <foxhlchen@gmail.com>

Thanks for testing Fox!

-- 
Thanks,
Sasha

Re: [PATCH 5.13 0/2] 5.13.1-rc1 review

[Sasha Levin]

On Mon, Jul 05, 2021 at 01:40:20PM -0700, Guenter Roeck wrote:
>On Mon, Jul 05, 2021 at 06:56:54AM -0400, Sasha Levin wrote:
>>
>> This is the start of the stable review cycle for the 5.13.1 release.
>> There are 2 patches in this series, all will be posted as a response
>> to this one.  If anyone has any issues with these being applied, please
>> let me know.
>>
>> Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
>> Anything received after that time might be too late.
>>
>
>Build results:
>	total: 151 pass: 151 fail: 0
>Qemu test results:
>	total: 462 pass: 462 fail: 0
>
>Tested-by: Guenter Roeck <linux@roeck-us.net>

Thanks for testing Guenter!

-- 
Thanks,
Sasha

Re: [PATCH 5.13 0/2] 5.13.1-rc1 review

[Sasha Levin]

On Tue, Jul 06, 2021 at 10:19:14AM +0530, Naresh Kamboju wrote:
>On Mon, 5 Jul 2021 at 16:27, Sasha Levin <sashal@kernel.org> wrote:
>>
>>
>> This is the start of the stable review cycle for the 5.13.1 release.
>> There are 2 patches in this series, all will be posted as a response
>> to this one.  If anyone has any issues with these being applied, please
>> let me know.
>>
>> Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
>> Anything received after that time might be too late.
>>
>> The whole patch series can be found in one patch at:
>>         https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-5.13.y&id2=v5.13
>> or in the git tree and branch at:
>>         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.13.y
>> and the diffstat can be found below.
>>
>> Thanks,
>> Sasha
>
>Results from Linaro’s test farm.
>No regressions on arm64, arm, x86_64, and i386.
>
>Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>

Thanks for testing Naresh!

-- 
Thanks,
Sasha

Re: [PATCH 5.13 0/2] 5.13.1-rc1 review

[Sasha Levin]

On Tue, Jul 06, 2021 at 04:43:30PM -0600, Shuah Khan wrote:
>On 7/5/21 4:56 AM, Sasha Levin wrote:
>>
>>This is the start of the stable review cycle for the 5.13.1 release.
>>There are 2 patches in this series, all will be posted as a response
>>to this one.  If anyone has any issues with these being applied, please
>>let me know.
>>
>>Responses should be made by Wed 07 Jul 2021 10:49:46 AM UTC.
>>Anything received after that time might be too late.
>>
>>The whole patch series can be found in one patch at:
>>         https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=linux-5.13.y&id2=v5.13
>>or in the git tree and branch at:
>>         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.13.y
>>and the diffstat can be found below.
>>
>>Thanks,
>>Sasha
>>
>
>Compiled and booted on my test system. No dmesg regressions.
>
>Tested-by: Shuah Khan <skhan@linuxfoundation.org>

Thanks for testing Shuah!

-- 
Thanks,
Sasha