[Xen-devel,v2,3/7] xen/arm: tlbflush: Clarify the TLB helpers name

TLB helpers in the headers tlbflush.h are currently quite confusing to
use the name may lead to think they are dealing with hypervisors TLBs
while they actually deal with guest TLBs.

Rename them to make it clearer that we are dealing with guest TLBs.

Signed-off-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Andrii Anisov <andrii_anisov@epam.com>

---
    Changes in v2:
        - Add Andrii's reviewed-by
---
 xen/arch/arm/p2m.c                   | 6 +++---
 xen/arch/arm/smp.c                   | 2 +-
 xen/arch/arm/traps.c                 | 2 +-
 xen/include/asm-arm/arm32/flushtlb.h | 8 ++++----
 xen/include/asm-arm/arm64/flushtlb.h | 8 ++++----
 5 files changed, 13 insertions(+), 13 deletions(-)

On Wed, 8 May 2019, Julien Grall wrote:
> TLB helpers in the headers tlbflush.h are currently quite confusing to
> use the name may lead to think they are dealing with hypervisors TLBs
> while they actually deal with guest TLBs.
> 
> Rename them to make it clearer that we are dealing with guest TLBs.
> 
> Signed-off-by: Julien Grall <julien.grall@arm.com>
> Reviewed-by: Andrii Anisov <andrii_anisov@epam.com>

Acked-by: Stefano Stabellini <sstabellini@kernel.org>


> ---
>     Changes in v2:
>         - Add Andrii's reviewed-by
> ---
>  xen/arch/arm/p2m.c                   | 6 +++---
>  xen/arch/arm/smp.c                   | 2 +-
>  xen/arch/arm/traps.c                 | 2 +-
>  xen/include/asm-arm/arm32/flushtlb.h | 8 ++++----
>  xen/include/asm-arm/arm64/flushtlb.h | 8 ++++----
>  5 files changed, 13 insertions(+), 13 deletions(-)
> 
> diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
> index c38bd7e16e..92c2413f20 100644
> --- a/xen/arch/arm/p2m.c
> +++ b/xen/arch/arm/p2m.c
> @@ -151,7 +151,7 @@ void p2m_restore_state(struct vcpu *n)
>       * when running multiple vCPU of the same domain on a single pCPU.
>       */
>      if ( *last_vcpu_ran != INVALID_VCPU_ID && *last_vcpu_ran != n->vcpu_id )
> -        flush_tlb_local();
> +        flush_guest_tlb_local();
>  
>      *last_vcpu_ran = n->vcpu_id;
>  }
> @@ -196,7 +196,7 @@ static void p2m_force_tlb_flush_sync(struct p2m_domain *p2m)
>          isb();
>      }
>  
> -    flush_tlb();
> +    flush_guest_tlb();
>  
>      if ( ovttbr != READ_SYSREG64(VTTBR_EL2) )
>      {
> @@ -1969,7 +1969,7 @@ static void setup_virt_paging_one(void *data)
>          WRITE_SYSREG(READ_SYSREG(HCR_EL2) | HCR_VM, HCR_EL2);
>          isb();
>  
> -        flush_tlb_all_local();
> +        flush_all_guests_tlb_local();
>      }
>  }
>  
> diff --git a/xen/arch/arm/smp.c b/xen/arch/arm/smp.c
> index 62f57f0ba2..ce1fcc8ef9 100644
> --- a/xen/arch/arm/smp.c
> +++ b/xen/arch/arm/smp.c
> @@ -8,7 +8,7 @@
>  void flush_tlb_mask(const cpumask_t *mask)
>  {
>      /* No need to IPI other processors on ARM, the processor takes care of it. */
> -    flush_tlb_all();
> +    flush_all_guests_tlb();
>  }
>  
>  void smp_send_event_check_mask(const cpumask_t *mask)
> diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
> index d8b9a8a0f0..1aba970415 100644
> --- a/xen/arch/arm/traps.c
> +++ b/xen/arch/arm/traps.c
> @@ -1924,7 +1924,7 @@ static void do_trap_stage2_abort_guest(struct cpu_user_regs *regs,
>           * still be inaccurate.
>           */
>          if ( !is_data )
> -            flush_tlb_local();
> +            flush_guest_tlb_local();
>  
>          rc = gva_to_ipa(gva, &gpa, GV2M_READ);
>          /*
> diff --git a/xen/include/asm-arm/arm32/flushtlb.h b/xen/include/asm-arm/arm32/flushtlb.h
> index bbcc82f490..22e100eccf 100644
> --- a/xen/include/asm-arm/arm32/flushtlb.h
> +++ b/xen/include/asm-arm/arm32/flushtlb.h
> @@ -2,7 +2,7 @@
>  #define __ASM_ARM_ARM32_FLUSHTLB_H__
>  
>  /* Flush local TLBs, current VMID only */
> -static inline void flush_tlb_local(void)
> +static inline void flush_guest_tlb_local(void)
>  {
>      dsb(sy);
>  
> @@ -13,7 +13,7 @@ static inline void flush_tlb_local(void)
>  }
>  
>  /* Flush inner shareable TLBs, current VMID only */
> -static inline void flush_tlb(void)
> +static inline void flush_guest_tlb(void)
>  {
>      dsb(sy);
>  
> @@ -24,7 +24,7 @@ static inline void flush_tlb(void)
>  }
>  
>  /* Flush local TLBs, all VMIDs, non-hypervisor mode */
> -static inline void flush_tlb_all_local(void)
> +static inline void flush_all_guests_tlb_local(void)
>  {
>      dsb(sy);
>  
> @@ -35,7 +35,7 @@ static inline void flush_tlb_all_local(void)
>  }
>  
>  /* Flush innershareable TLBs, all VMIDs, non-hypervisor mode */
> -static inline void flush_tlb_all(void)
> +static inline void flush_all_guests_tlb(void)
>  {
>      dsb(sy);
>  
> diff --git a/xen/include/asm-arm/arm64/flushtlb.h b/xen/include/asm-arm/arm64/flushtlb.h
> index 942f2d3992..adbbd5c522 100644
> --- a/xen/include/asm-arm/arm64/flushtlb.h
> +++ b/xen/include/asm-arm/arm64/flushtlb.h
> @@ -2,7 +2,7 @@
>  #define __ASM_ARM_ARM64_FLUSHTLB_H__
>  
>  /* Flush local TLBs, current VMID only */
> -static inline void flush_tlb_local(void)
> +static inline void flush_guest_tlb_local(void)
>  {
>      asm volatile(
>          "dsb sy;"
> @@ -13,7 +13,7 @@ static inline void flush_tlb_local(void)
>  }
>  
>  /* Flush innershareable TLBs, current VMID only */
> -static inline void flush_tlb(void)
> +static inline void flush_guest_tlb(void)
>  {
>      asm volatile(
>          "dsb sy;"
> @@ -24,7 +24,7 @@ static inline void flush_tlb(void)
>  }
>  
>  /* Flush local TLBs, all VMIDs, non-hypervisor mode */
> -static inline void flush_tlb_all_local(void)
> +static inline void flush_all_guests_tlb_local(void)
>  {
>      asm volatile(
>          "dsb sy;"
> @@ -35,7 +35,7 @@ static inline void flush_tlb_all_local(void)
>  }
>  
>  /* Flush innershareable TLBs, all VMIDs, non-hypervisor mode */
> -static inline void flush_tlb_all(void)
> +static inline void flush_all_guests_tlb(void)
>  {
>      asm volatile(
>          "dsb sy;"
> -- 
> 2.11.0
>