1. Patchew
  2. QEMU
  3. View series

[PATCH qemu] spapr: Rename RTAS_MAX_ADDR to FDT_MAX_ADDR

Alexey Kardashevskiy posted 1 patch 4 years, 10 months ago
Test checkpatch passed
Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20210331025123.29310-1-aik@ozlabs.ru
Maintainers: Greg Kurz <groug@kaod.org>, David Gibson <david@gibson.dropbear.id.au>
hw/ppc/spapr.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
[PATCH qemu] spapr: Rename RTAS_MAX_ADDR to FDT_MAX_ADDR
Posted by Alexey Kardashevskiy 4 years, 10 months ago 
SLOF instantiates RTAS since
744a928ccee9 ("spapr: Stop providing RTAS blob")
so the max address applies to the FDT only.

This renames the macro and fixes up the comment.

This should not cause any behavioral change.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
 hw/ppc/spapr.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 73a06df3b1b1..1e18a0a62839 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -100,7 +100,7 @@
  *
  * We load our kernel at 4M, leaving space for SLOF initial image
  */
-#define RTAS_MAX_ADDR           0x80000000 /* RTAS must stay below that */
+#define FDT_MAX_ADDR            0x80000000 /* FDT must stay below that */
 #define FW_MAX_SIZE             0x400000
 #define FW_FILE_NAME            "slof.bin"
 #define FW_OVERHEAD             0x2800000
@@ -1617,11 +1617,11 @@ static void spapr_machine_reset(MachineState *machine)
     spapr_clear_pending_events(spapr);
 
     /*
-     * We place the device tree and RTAS just below either the top of the RMA,
+     * We place the device tree just below either the top of the RMA,
      * or just below 2GB, whichever is lower, so that it can be
      * processed with 32-bit real mode code if necessary
      */
-    fdt_addr = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FDT_MAX_SIZE;
+    fdt_addr = MIN(spapr->rma_size, FDT_MAX_ADDR) - FDT_MAX_SIZE;
 
     fdt = spapr_build_fdt(spapr, true, FDT_MAX_SIZE);
 
@@ -2694,7 +2694,7 @@ static void spapr_machine_init(MachineState *machine)
     spapr->rma_size = spapr_rma_size(spapr, &error_fatal);
 
     /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */
-    load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD;
+    load_limit = MIN(spapr->rma_size, FDT_MAX_ADDR) - FW_OVERHEAD;
 
     /*
      * VSMT must be set in order to be able to compute VCPU ids, ie to
-- 
2.17.1
Re: [PATCH qemu] spapr: Rename RTAS_MAX_ADDR to FDT_MAX_ADDR
Posted by Greg Kurz 4 years, 10 months ago 
On Wed, 31 Mar 2021 13:51:23 +1100
Alexey Kardashevskiy <aik@ozlabs.ru> wrote:

> SLOF instantiates RTAS since
> 744a928ccee9 ("spapr: Stop providing RTAS blob")
> so the max address applies to the FDT only.
> 
> This renames the macro and fixes up the comment.
> 
> This should not cause any behavioral change.
> 
> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
> ---

Reviewed-by: Greg Kurz <groug@kaod.org>

>  hw/ppc/spapr.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index 73a06df3b1b1..1e18a0a62839 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -100,7 +100,7 @@
>   *
>   * We load our kernel at 4M, leaving space for SLOF initial image
>   */
> -#define RTAS_MAX_ADDR           0x80000000 /* RTAS must stay below that */
> +#define FDT_MAX_ADDR            0x80000000 /* FDT must stay below that */
>  #define FW_MAX_SIZE             0x400000
>  #define FW_FILE_NAME            "slof.bin"
>  #define FW_OVERHEAD             0x2800000
> @@ -1617,11 +1617,11 @@ static void spapr_machine_reset(MachineState *machine)
>      spapr_clear_pending_events(spapr);
>  
>      /*
> -     * We place the device tree and RTAS just below either the top of the RMA,
> +     * We place the device tree just below either the top of the RMA,
>       * or just below 2GB, whichever is lower, so that it can be
>       * processed with 32-bit real mode code if necessary
>       */
> -    fdt_addr = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FDT_MAX_SIZE;
> +    fdt_addr = MIN(spapr->rma_size, FDT_MAX_ADDR) - FDT_MAX_SIZE;
>  
>      fdt = spapr_build_fdt(spapr, true, FDT_MAX_SIZE);
>  
> @@ -2694,7 +2694,7 @@ static void spapr_machine_init(MachineState *machine)
>      spapr->rma_size = spapr_rma_size(spapr, &error_fatal);
>  
>      /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */
> -    load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD;
> +    load_limit = MIN(spapr->rma_size, FDT_MAX_ADDR) - FW_OVERHEAD;
>  
>      /*
>       * VSMT must be set in order to be able to compute VCPU ids, ie to
Re: [PATCH qemu] spapr: Rename RTAS_MAX_ADDR to FDT_MAX_ADDR
Posted by David Gibson 4 years, 10 months ago 
On Wed, Mar 31, 2021 at 01:51:23PM +1100, Alexey Kardashevskiy wrote:
> SLOF instantiates RTAS since
> 744a928ccee9 ("spapr: Stop providing RTAS blob")
> so the max address applies to the FDT only.
> 
> This renames the macro and fixes up the comment.
> 
> This should not cause any behavioral change.
> 
> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>

Applied to ppc-for-6.1, thanks.

> ---
>  hw/ppc/spapr.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index 73a06df3b1b1..1e18a0a62839 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -100,7 +100,7 @@
>   *
>   * We load our kernel at 4M, leaving space for SLOF initial image
>   */
> -#define RTAS_MAX_ADDR           0x80000000 /* RTAS must stay below that */
> +#define FDT_MAX_ADDR            0x80000000 /* FDT must stay below that */
>  #define FW_MAX_SIZE             0x400000
>  #define FW_FILE_NAME            "slof.bin"
>  #define FW_OVERHEAD             0x2800000
> @@ -1617,11 +1617,11 @@ static void spapr_machine_reset(MachineState *machine)
>      spapr_clear_pending_events(spapr);
>  
>      /*
> -     * We place the device tree and RTAS just below either the top of the RMA,
> +     * We place the device tree just below either the top of the RMA,
>       * or just below 2GB, whichever is lower, so that it can be
>       * processed with 32-bit real mode code if necessary
>       */
> -    fdt_addr = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FDT_MAX_SIZE;
> +    fdt_addr = MIN(spapr->rma_size, FDT_MAX_ADDR) - FDT_MAX_SIZE;
>  
>      fdt = spapr_build_fdt(spapr, true, FDT_MAX_SIZE);
>  
> @@ -2694,7 +2694,7 @@ static void spapr_machine_init(MachineState *machine)
>      spapr->rma_size = spapr_rma_size(spapr, &error_fatal);
>  
>      /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */
> -    load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD;
> +    load_limit = MIN(spapr->rma_size, FDT_MAX_ADDR) - FW_OVERHEAD;
>  
>      /*
>       * VSMT must be set in order to be able to compute VCPU ids, ie to

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

Patchew 2.1-devel-b67e4c2

© 2016 - 2026 Red Hat, Inc.