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Linux aarch64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190501161008.31498-1-kristina.martsenko@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190501_092055_434849_51D4EDD7 X-CRM114-Status: GOOD ( 17.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Julien Thierry , Catalin Marinas , Suzuki K Poulose , Will Deacon , kvmarm@lists.cs.columbia.edu, James Morse , Amit Kachhap , Andrew Murray , Dave P Martin , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 01/05/2019 17:10, Kristina Martsenko wrote: > When a VCPU doesn't have pointer auth, we want to hide all four pointer > auth ID register fields from the guest, not just one of them. > > Fixes: 384b40caa8af ("KVM: arm/arm64: Context-switch ptrauth registers") > Reported-by: Andrew Murray > Fsck-up-by: Marc Zyngier > Signed-off-by: Kristina Martsenko > --- > arch/arm64/kvm/sys_regs.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c > index 9d02643bc601..857b226bcdde 100644 > --- a/arch/arm64/kvm/sys_regs.c > +++ b/arch/arm64/kvm/sys_regs.c > @@ -1088,10 +1088,10 @@ static u64 read_id_reg(const struct kvm_vcpu *vcpu, > if (id == SYS_ID_AA64PFR0_EL1 && !vcpu_has_sve(vcpu)) { > val &= ~(0xfUL << ID_AA64PFR0_SVE_SHIFT); > } else if (id == SYS_ID_AA64ISAR1_EL1 && !vcpu_has_ptrauth(vcpu)) { > - val &= ~(0xfUL << ID_AA64ISAR1_APA_SHIFT) | > - (0xfUL << ID_AA64ISAR1_API_SHIFT) | > - (0xfUL << ID_AA64ISAR1_GPA_SHIFT) | > - (0xfUL << ID_AA64ISAR1_GPI_SHIFT); > + val &= ~((0xfUL << ID_AA64ISAR1_APA_SHIFT) | > + (0xfUL << ID_AA64ISAR1_API_SHIFT) | > + (0xfUL << ID_AA64ISAR1_GPA_SHIFT) | > + (0xfUL << ID_AA64ISAR1_GPI_SHIFT)); > } > > return val; > Applied and pushed to -next. Thanks Andrew for reporting it, and Kristina for putting me right! M. -- Jazz is not dead. It just smells funny... _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel