diff mbox series

[v3,1/2] xen/arm: gic: acpi: Use the correct length for the GICC structure

Message ID 20201119121347.27139-2-julien@xen.org (mailing list archive)
State Superseded
Headers show
Series xen/arm: Allow Xen to boot with ACPI 5.1 | expand

Commit Message

Julien Grall Nov. 19, 2020, 12:13 p.m. UTC 
From: Julien Grall <julien.grall@arm.com>

The length of the GICC structure in the MADT ACPI table differs between
version 5.1 and 6.0, although there are no other relevant differences.

Use the BAD_MADT_GICC_ENTRY macro, which was specifically designed to
overcome this issue.

Signed-off-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Julien Grall <jgrall@amazon.com>

---
    Changes in v3:
        - Update the commit title as we also modify GICv3 code
        - Use the correct length in more places

    Changes in v2:
        - Patch added
---
 xen/arch/arm/acpi/boot.c | 2 +-
 xen/arch/arm/gic-v2.c    | 5 +++--
 xen/arch/arm/gic-v3.c    | 6 +++---
 xen/arch/arm/gic.c       | 2 +-
 4 files changed, 8 insertions(+), 7 deletions(-)

Comments

Bertrand Marquis Nov. 19, 2020, 3:22 p.m. UTC | #1 
Hi Julien,

> On 19 Nov 2020, at 12:13, Julien Grall <julien@xen.org> wrote:
> 
> From: Julien Grall <julien.grall@arm.com>
> 
> The length of the GICC structure in the MADT ACPI table differs between
> version 5.1 and 6.0, although there are no other relevant differences.
> 
> Use the BAD_MADT_GICC_ENTRY macro, which was specifically designed to
> overcome this issue.
> 

The serie is braking the build on arm64 if ACPI is not activated:
arch/arm/gic.c:456: undefined reference to `acpi_gbl_FADT’

Cheers
Bertrand

> Signed-off-by: Julien Grall <julien.grall@arm.com>
> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
> Signed-off-by: Julien Grall <jgrall@amazon.com>
> 
> ---
>    Changes in v3:
>        - Update the commit title as we also modify GICv3 code
>        - Use the correct length in more places
> 
>    Changes in v2:
>        - Patch added
> ---
> xen/arch/arm/acpi/boot.c | 2 +-
> xen/arch/arm/gic-v2.c    | 5 +++--
> xen/arch/arm/gic-v3.c    | 6 +++---
> xen/arch/arm/gic.c       | 2 +-
> 4 files changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/xen/arch/arm/acpi/boot.c b/xen/arch/arm/acpi/boot.c
> index 30e4bd1bc5a7..55c3e5cbc834 100644
> --- a/xen/arch/arm/acpi/boot.c
> +++ b/xen/arch/arm/acpi/boot.c
> @@ -131,7 +131,7 @@ acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
>     struct acpi_madt_generic_interrupt *processor =
>                container_of(header, struct acpi_madt_generic_interrupt, header);
> 
> -    if ( BAD_MADT_ENTRY(processor, end) )
> +    if ( BAD_MADT_GICC_ENTRY(processor, end) )
>         return -EINVAL;
> 
>     acpi_table_print_madt_entry(header);
> diff --git a/xen/arch/arm/gic-v2.c b/xen/arch/arm/gic-v2.c
> index 0f747538dbcd..0e5f23201974 100644
> --- a/xen/arch/arm/gic-v2.c
> +++ b/xen/arch/arm/gic-v2.c
> @@ -1136,7 +1136,8 @@ static int gicv2_make_hwdom_madt(const struct domain *d, u32 offset)
> 
>     host_gicc = container_of(header, struct acpi_madt_generic_interrupt,
>                              header);
> -    size = sizeof(struct acpi_madt_generic_interrupt);
> +
> +    size = ACPI_MADT_GICC_LENGTH;
>     /* Add Generic Interrupt */
>     for ( i = 0; i < d->max_vcpus; i++ )
>     {
> @@ -1165,7 +1166,7 @@ gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
>     struct acpi_madt_generic_interrupt *processor =
>                container_of(header, struct acpi_madt_generic_interrupt, header);
> 
> -    if ( BAD_MADT_ENTRY(processor, end) )
> +    if ( BAD_MADT_GICC_ENTRY(processor, end) )
>         return -EINVAL;
> 
>     /* Read from APIC table and fill up the GIC variables */
> diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c
> index 0f6cbf6224e9..483ec1598f37 100644
> --- a/xen/arch/arm/gic-v3.c
> +++ b/xen/arch/arm/gic-v3.c
> @@ -1499,7 +1499,7 @@ static int gicv3_make_hwdom_madt(const struct domain *d, u32 offset)
> 
>     host_gicc = container_of(header, struct acpi_madt_generic_interrupt,
>                              header);
> -    size = sizeof(struct acpi_madt_generic_interrupt);
> +    size = ACPI_MADT_GICC_LENGTH;
>     for ( i = 0; i < d->max_vcpus; i++ )
>     {
>         gicc = (struct acpi_madt_generic_interrupt *)(base_ptr + table_len);
> @@ -1558,7 +1558,7 @@ gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
>     struct acpi_madt_generic_interrupt *processor =
>                container_of(header, struct acpi_madt_generic_interrupt, header);
> 
> -    if ( BAD_MADT_ENTRY(processor, end) )
> +    if ( BAD_MADT_GICC_ENTRY(processor, end) )
>         return -EINVAL;
> 
>     /* Read from APIC table and fill up the GIC variables */
> @@ -1628,7 +1628,7 @@ gic_acpi_get_madt_cpu_num(struct acpi_subtable_header *header,
>     struct acpi_madt_generic_interrupt *cpuif;
> 
>     cpuif = (struct acpi_madt_generic_interrupt *)header;
> -    if ( BAD_MADT_ENTRY(cpuif, end) || !cpuif->gicr_base_address )
> +    if ( BAD_MADT_GICC_ENTRY(cpuif, end) || !cpuif->gicr_base_address )
>         return -EINVAL;
> 
>     return 0;
> diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
> index d623c57cb9fa..b100c85ef314 100644
> --- a/xen/arch/arm/gic.c
> +++ b/xen/arch/arm/gic.c
> @@ -453,7 +453,7 @@ unsigned long gic_get_hwdom_madt_size(const struct domain *d)
>     unsigned long madt_size;
> 
>     madt_size = sizeof(struct acpi_table_madt)
> -                + sizeof(struct acpi_madt_generic_interrupt) * d->max_vcpus
> +                + ACPI_MADT_GICC_LENGTH * d->max_vcpus
>                 + sizeof(struct acpi_madt_generic_distributor)
>                 + gic_hw_ops->get_hwdom_extra_madt_size(d);
> 
> -- 
> 2.17.1
>
Julien Grall Nov. 19, 2020, 3:24 p.m. UTC | #2 
On 19/11/2020 15:22, Bertrand Marquis wrote:
> Hi Julien,

Hi Bertrand,

> 
>> On 19 Nov 2020, at 12:13, Julien Grall <julien@xen.org> wrote:
>>
>> From: Julien Grall <julien.grall@arm.com>
>>
>> The length of the GICC structure in the MADT ACPI table differs between
>> version 5.1 and 6.0, although there are no other relevant differences.
>>
>> Use the BAD_MADT_GICC_ENTRY macro, which was specifically designed to
>> overcome this issue.
>>
> 
> The serie is braking the build on arm64 if ACPI is not activated:
> arch/arm/gic.c:456: undefined reference to `acpi_gbl_FADT’

:(. Sorry for that. I usually test with and without ACPI enabled but 
forgot to do for this series.

Cheers,
Stefano Stabellini Nov. 19, 2020, 11:49 p.m. UTC | #3 
On Thu, 19 Nov 2020, Julien Grall wrote:
> On 19/11/2020 15:22, Bertrand Marquis wrote:
> > Hi Julien,
> 
> Hi Bertrand,
> 
> > 
> > > On 19 Nov 2020, at 12:13, Julien Grall <julien@xen.org> wrote:
> > > 
> > > From: Julien Grall <julien.grall@arm.com>
> > > 
> > > The length of the GICC structure in the MADT ACPI table differs between
> > > version 5.1 and 6.0, although there are no other relevant differences.
> > > 
> > > Use the BAD_MADT_GICC_ENTRY macro, which was specifically designed to
> > > overcome this issue.
> > > 
> > 
> > The serie is braking the build on arm64 if ACPI is not activated:
> > arch/arm/gic.c:456: undefined reference to `acpi_gbl_FADT’
> 
> :(. Sorry for that. I usually test with and without ACPI enabled but forgot to
> do for this series.

I just wanted to add that I checked and it looks like to converted all
places now
diff mbox series

Patch

diff --git a/xen/arch/arm/acpi/boot.c b/xen/arch/arm/acpi/boot.c
index 30e4bd1bc5a7..55c3e5cbc834 100644
--- a/xen/arch/arm/acpi/boot.c
+++ b/xen/arch/arm/acpi/boot.c
@@ -131,7 +131,7 @@  acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
     struct acpi_madt_generic_interrupt *processor =
                container_of(header, struct acpi_madt_generic_interrupt, header);
 
-    if ( BAD_MADT_ENTRY(processor, end) )
+    if ( BAD_MADT_GICC_ENTRY(processor, end) )
         return -EINVAL;
 
     acpi_table_print_madt_entry(header);
diff --git a/xen/arch/arm/gic-v2.c b/xen/arch/arm/gic-v2.c
index 0f747538dbcd..0e5f23201974 100644
--- a/xen/arch/arm/gic-v2.c
+++ b/xen/arch/arm/gic-v2.c
@@ -1136,7 +1136,8 @@  static int gicv2_make_hwdom_madt(const struct domain *d, u32 offset)
 
     host_gicc = container_of(header, struct acpi_madt_generic_interrupt,
                              header);
-    size = sizeof(struct acpi_madt_generic_interrupt);
+
+    size = ACPI_MADT_GICC_LENGTH;
     /* Add Generic Interrupt */
     for ( i = 0; i < d->max_vcpus; i++ )
     {
@@ -1165,7 +1166,7 @@  gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
     struct acpi_madt_generic_interrupt *processor =
                container_of(header, struct acpi_madt_generic_interrupt, header);
 
-    if ( BAD_MADT_ENTRY(processor, end) )
+    if ( BAD_MADT_GICC_ENTRY(processor, end) )
         return -EINVAL;
 
     /* Read from APIC table and fill up the GIC variables */
diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c
index 0f6cbf6224e9..483ec1598f37 100644
--- a/xen/arch/arm/gic-v3.c
+++ b/xen/arch/arm/gic-v3.c
@@ -1499,7 +1499,7 @@  static int gicv3_make_hwdom_madt(const struct domain *d, u32 offset)
 
     host_gicc = container_of(header, struct acpi_madt_generic_interrupt,
                              header);
-    size = sizeof(struct acpi_madt_generic_interrupt);
+    size = ACPI_MADT_GICC_LENGTH;
     for ( i = 0; i < d->max_vcpus; i++ )
     {
         gicc = (struct acpi_madt_generic_interrupt *)(base_ptr + table_len);
@@ -1558,7 +1558,7 @@  gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
     struct acpi_madt_generic_interrupt *processor =
                container_of(header, struct acpi_madt_generic_interrupt, header);
 
-    if ( BAD_MADT_ENTRY(processor, end) )
+    if ( BAD_MADT_GICC_ENTRY(processor, end) )
         return -EINVAL;
 
     /* Read from APIC table and fill up the GIC variables */
@@ -1628,7 +1628,7 @@  gic_acpi_get_madt_cpu_num(struct acpi_subtable_header *header,
     struct acpi_madt_generic_interrupt *cpuif;
 
     cpuif = (struct acpi_madt_generic_interrupt *)header;
-    if ( BAD_MADT_ENTRY(cpuif, end) || !cpuif->gicr_base_address )
+    if ( BAD_MADT_GICC_ENTRY(cpuif, end) || !cpuif->gicr_base_address )
         return -EINVAL;
 
     return 0;
diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index d623c57cb9fa..b100c85ef314 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -453,7 +453,7 @@  unsigned long gic_get_hwdom_madt_size(const struct domain *d)
     unsigned long madt_size;
 
     madt_size = sizeof(struct acpi_table_madt)
-                + sizeof(struct acpi_madt_generic_interrupt) * d->max_vcpus
+                + ACPI_MADT_GICC_LENGTH * d->max_vcpus
                 + sizeof(struct acpi_madt_generic_distributor)
                 + gic_hw_ops->get_hwdom_extra_madt_size(d);