From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Marc Zyngier <marc.zyngier@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Christoffer Dall <cdall@linaro.org>
Subject: [PATCH 4.4 14/16] kvm: arm/arm64: Force reading uncached stage2 PGD
Date: Tue, 5 Sep 2017 09:10:04 +0200 [thread overview]
Message-ID: <20170905070905.104354706@linuxfoundation.org> (raw)
In-Reply-To: <20170905070904.465037171@linuxfoundation.org>
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Suzuki K Poulose <suzuki.poulose@arm.com>
commit 2952a6070e07ebdd5896f1f5b861acad677caded upstream.
Make sure we don't use a cached value of the KVM stage2 PGD while
resetting the PGD.
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm/kvm/mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -833,7 +833,7 @@ void kvm_free_stage2_pgd(struct kvm *kvm
spin_lock(&kvm->mmu_lock);
if (kvm->arch.pgd) {
unmap_stage2_range(kvm, 0, KVM_PHYS_SIZE);
- pgd = kvm->arch.pgd;
+ pgd = READ_ONCE(kvm->arch.pgd);
hwpgd = kvm_get_hwpgd(kvm);
kvm->arch.pgd = NULL;
}
next prev parent reply other threads:[~2017-09-05 7:10 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-05 7:09 [PATCH 4.4 00/16] 4.4.87-stable review Greg Kroah-Hartman
2017-09-05 7:09 ` [PATCH 4.4 01/16] irqchip: mips-gic: SYNC after enabling GIC region Greg Kroah-Hartman
2017-09-05 7:09 ` [PATCH 4.4 02/16] i2c: ismt: Dont duplicate the receive length for block reads Greg Kroah-Hartman
2017-09-05 7:09 ` [PATCH 4.4 03/16] i2c: ismt: Return EMSGSIZE for block reads with bogus length Greg Kroah-Hartman
2017-09-05 7:09 ` [PATCH 4.4 04/16] ceph: fix readpage from fscache Greg Kroah-Hartman
2017-09-05 7:09 ` [PATCH 4.4 05/16] cpumask: fix spurious cpumask_of_node() on non-NUMA multi-node configs Greg Kroah-Hartman
2017-09-05 7:09 ` [PATCH 4.4 06/16] cpuset: Fix incorrect memory_pressure control file mapping Greg Kroah-Hartman
2017-09-05 7:09 ` [PATCH 4.4 07/16] alpha: uapi: Add support for __SANE_USERSPACE_TYPES__ Greg Kroah-Hartman
2017-09-05 7:09 ` [PATCH 4.4 08/16] CIFS: Fix maximum SMB2 header size Greg Kroah-Hartman
2017-09-05 7:09 ` [PATCH 4.4 09/16] CIFS: remove endian related sparse warning Greg Kroah-Hartman
2017-09-05 7:10 ` [PATCH 4.4 10/16] wl1251: add a missing spin_lock_init() Greg Kroah-Hartman
2017-09-05 7:10 ` [PATCH 4.4 11/16] xfrm: policy: check policy direction value Greg Kroah-Hartman
2017-09-05 7:10 ` Greg Kroah-Hartman [this message]
2017-09-05 7:10 ` [PATCH 4.4 16/16] crypto: algif_skcipher - only call put_page on referenced and used pages Greg Kroah-Hartman
2017-09-05 16:47 ` [PATCH 4.4 00/16] 4.4.87-stable review Guenter Roeck
2017-09-05 17:12 ` Shuah Khan
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