| Message ID | 20231024132655.730417-6-cleger@rivosinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | riscv: cleanup assembly usage of ENTRY()/END() and use local labels | expand |
On Tue, 24 Oct 2023 06:26:55 PDT (-0700), cleger@rivosinc.com 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 <cleger@rivosinc.com> > Reviewed-by: Andrew Jones <ajones@ventanamicro.com> > --- > 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 Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
On Tue, Oct 24, 2023 at 6:58 PM Clément Léger <cleger@rivosinc.com> 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 <cleger@rivosinc.com> > Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Queued this patch for Linux-6.8 Thanks, Anup > --- > 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 > > > -- > kvm-riscv mailing list > kvm-riscv@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/kvm-riscv
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