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[2001:1ae9:1c2:4c00:20f:c6b4:1e57:7965]) by smtp.gmail.com with ESMTPSA id pj19-20020a170906d79300b009ad829ed144sm6355041ejb.130.2023.10.23.03.03.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Oct 2023 03:04:00 -0700 (PDT) Date: Mon, 23 Oct 2023 12:03:59 +0200 From: Andrew Jones To: =?utf-8?B?Q2zDqW1lbnQgTMOpZ2Vy?= Cc: Paul Walmsley , Palmer Dabbelt , Albert Ou , Anup Patel , Atish Patra , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org Subject: Re: [PATCH 5/5] riscv: kvm: use ".L" local labels in assembly when applicable Message-ID: <20231023-c9629db3ee7d3e845030bc26@orel> References: <20231004143054.482091-1-cleger@rivosinc.com> <20231004143054.482091-6-cleger@rivosinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20231004143054.482091-6-cleger@rivosinc.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 04, 2023 at 04:30:54PM +0200, Clément Léger wrote: > For the sake of coherency, use local labels in assembly when > applicable. This also avoid kprobes being confused when applying a > kprobe since the size of function is computed by checking where the > next visible symbol is located. This might end up in computing some > function size to be way shorter than expected and thus failing to apply > kprobes to the specified offset. > > Signed-off-by: Clément Léger > --- > arch/riscv/kvm/vcpu_switch.S | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/riscv/kvm/vcpu_switch.S b/arch/riscv/kvm/vcpu_switch.S > index 8b18473780ac..0c26189aa01c 100644 > --- a/arch/riscv/kvm/vcpu_switch.S > +++ b/arch/riscv/kvm/vcpu_switch.S > @@ -45,7 +45,7 @@ SYM_FUNC_START(__kvm_riscv_switch_to) > REG_L t0, (KVM_ARCH_GUEST_SSTATUS)(a0) > REG_L t1, (KVM_ARCH_GUEST_HSTATUS)(a0) > REG_L t2, (KVM_ARCH_GUEST_SCOUNTEREN)(a0) > - la t4, __kvm_switch_return > + la t4, .Lkvm_switch_return > REG_L t5, (KVM_ARCH_GUEST_SEPC)(a0) > > /* Save Host and Restore Guest SSTATUS */ > @@ -113,7 +113,7 @@ SYM_FUNC_START(__kvm_riscv_switch_to) > > /* Back to Host */ > .align 2 > -__kvm_switch_return: > +.Lkvm_switch_return: > /* Swap Guest A0 with SSCRATCH */ > csrrw a0, CSR_SSCRATCH, a0 > > -- > 2.42.0 > Reviewed-by: Andrew Jones