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Wed, 11 Mar 2026 16:17:36 -0700 (PDT) Date: Thu, 12 Mar 2026 00:17:31 +0100 From: Osama Abdelkader To: Andrew Jones Cc: Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Andrew Jones , kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] RISC-V: KVM: fix PMU snapshot_set_shmem on 32-bit hosts Message-ID: References: <20260307234355.69831-1-osama.abdelkader@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Mon, Mar 09, 2026 at 04:12:43PM -0500, Andrew Jones wrote: > On Sun, Mar 08, 2026 at 12:43:54AM +0100, Osama Abdelkader wrote: > > When saddr_high != 0 on RV32, the goto out was unconditional, causing > > valid 64-bit addresses to be rejected. Only goto out when the address > > is invalid (64-bit host with saddr_high != 0). > > > > Fixes: c2f41ddbcdd7 ("RISC-V: KVM: Implement SBI PMU Snapshot feature") > > Signed-off-by: Osama Abdelkader > > --- > > arch/riscv/kvm/vcpu_pmu.c | 5 +++-- > > 1 file changed, 3 insertions(+), 2 deletions(-) > > > > diff --git a/arch/riscv/kvm/vcpu_pmu.c b/arch/riscv/kvm/vcpu_pmu.c > > index 4d8d5e9aa53d..045099ca904b 100644 > > --- a/arch/riscv/kvm/vcpu_pmu.c > > +++ b/arch/riscv/kvm/vcpu_pmu.c > > @@ -425,9 +425,10 @@ int kvm_riscv_vcpu_pmu_snapshot_set_shmem(struct kvm_vcpu *vcpu, unsigned long s > > if (saddr_high != 0) { > > if (IS_ENABLED(CONFIG_32BIT)) > > saddr |= ((gpa_t)saddr_high << 32); > > - else > > + else { > > sbiret = SBI_ERR_INVALID_ADDRESS; > > - goto out; > > + goto out; > > + } > > nit: Could add the {} to the if-arm too in order to keep things balanced. > Otherwise, > > Reviewed-by: Andrew Jones > > Thanks, > drew > Hi Andrew, I'm going to do that in v2, thanks. Thanks, Osama > > } > > > > kvpmu->sdata = kzalloc(snapshot_area_size, GFP_ATOMIC); > > -- > > 2.43.0 > > > > > > -- > > kvm-riscv mailing list > > kvm-riscv@lists.infradead.org > > http://lists.infradead.org/mailman/listinfo/kvm-riscv