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Re: [Xen-devel] [PATCH v3 4/5] ARM: Introduce get_hwdom_madt_size in gic_hw_operations
Hi,
On 05/09/17 18:14, mjaggi@xxxxxxxxxxxxxxxxxx wrote:
From: Manish Jaggi <mjaggi@xxxxxxxxxx>
estimate_acpi_efi_size needs to be updated to provide correct size of
hardware domains MADT, which now adds ITS information as well.
Introducing gic_get_hwdom_madt_size.
Signed-off-by: Manish Jaggi <mjaggi@xxxxxxxxxx>
---
xen/arch/arm/domain_build.c | 7 +------
xen/arch/arm/gic-v2.c | 6 ++++++
xen/arch/arm/gic-v3.c | 18 ++++++++++++++++++
xen/arch/arm/gic.c | 11 +++++++++++
xen/include/asm-arm/gic.h | 3 +++
5 files changed, 39 insertions(+), 6 deletions(-)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 1bec4fa..5739ea4 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -1806,12 +1806,7 @@ static int estimate_acpi_efi_size(struct domain *d,
struct kernel_info *kinfo)
acpi_size = ROUNDUP(sizeof(struct acpi_table_fadt), 8);
acpi_size += ROUNDUP(sizeof(struct acpi_table_stao), 8);
- madt_size = sizeof(struct acpi_table_madt)
- + sizeof(struct acpi_madt_generic_interrupt) * d->max_vcpus
- + sizeof(struct acpi_madt_generic_distributor);
- if ( d->arch.vgic.version == GIC_V3 )
- madt_size += sizeof(struct acpi_madt_generic_redistributor)
- * d->arch.vgic.nr_regions;
+ madt_size = gic_get_hwdom_madt_size(d);
acpi_size += ROUNDUP(madt_size, 8);
addr = acpi_os_get_root_pointer();
diff --git a/xen/arch/arm/gic-v2.c b/xen/arch/arm/gic-v2.c
index cbe71a9..737c50a 100644
--- a/xen/arch/arm/gic-v2.c
+++ b/xen/arch/arm/gic-v2.c
@@ -1012,6 +1012,11 @@ static int gicv2_iomem_deny_access(const struct domain
*d)
return iomem_deny_access(d, mfn, mfn + nr);
}
+static unsigned long gicv2_get_hwdom_madt_size(const struct domain *d)
+{
+ return 0;
+}
+
#ifdef CONFIG_ACPI
static int gicv2_make_hwdom_madt(const struct domain *d, u32 offset)
{
@@ -1248,6 +1253,7 @@ const static struct gic_hw_operations gicv2_ops = {
.read_apr = gicv2_read_apr,
.make_hwdom_dt_node = gicv2_make_hwdom_dt_node,
.make_hwdom_madt = gicv2_make_hwdom_madt,
+ .get_hwdom_madt_size = gicv2_get_hwdom_madt_size,
.map_hwdom_extra_mappings = gicv2_map_hwdown_extra_mappings,
.iomem_deny_access = gicv2_iomem_deny_access,
.do_LPI = gicv2_do_LPI,
diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c
index b3d605d..3eb67f2 100644
--- a/xen/arch/arm/gic-v3.c
+++ b/xen/arch/arm/gic-v3.c
@@ -1406,6 +1406,18 @@ static int gicv3_make_hwdom_madt(const struct domain *d,
u32 offset)
return table_len;
}
+static unsigned long gicv3_get_hwdom_madt_size(const struct domain *d)
+{
+ unsigned long size;
As already requested on v2, you need to add a newline here.
+ size = sizeof(struct acpi_madt_generic_redistributor)
+ * d->arch.vgic.nr_regions;
+
+ size += vgic_v3_its_count(d)
+ * sizeof(struct acpi_madt_generic_translator);
+
+ return size;
+}
+
static int __init
gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
const unsigned long end)
@@ -1597,6 +1609,11 @@ static int gicv3_make_hwdom_madt(const struct domain *d,
u32 offset)
{
return 0;
}
+
+static u32 gicv3_get_hwdom_madt_size(const struct domain *d)
+{
+ return 0;
+}
#endif
/* Set up the GIC */
@@ -1698,6 +1715,7 @@ static const struct gic_hw_operations gicv3_ops = {
.secondary_init = gicv3_secondary_cpu_init,
.make_hwdom_dt_node = gicv3_make_hwdom_dt_node,
.make_hwdom_madt = gicv3_make_hwdom_madt,
+ .get_hwdom_madt_size = gicv3_get_hwdom_madt_size,
.iomem_deny_access = gicv3_iomem_deny_access,
.do_LPI = gicv3_do_LPI,
};
diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index 6c803bf..9ffd33a 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.cMissing newline here.
@@ -851,6 +851,17 @@ int gic_make_hwdom_madt(const struct domain *d, u32 offset)
return gic_hw_ops->make_hwdom_madt(d, offset);
}
+unsigned long gic_get_hwdom_madt_size(const struct domain *d)
+{
+ unsigned long madt_size;
Same here.
+ madt_size = sizeof(struct acpi_table_madt)
+ + sizeof(struct acpi_madt_generic_interrupt) * d->max_vcpus
+ + sizeof(struct acpi_madt_generic_distributor)
+ + gic_hw_ops->get_hwdom_madt_size(d);
+
+ return madt_size;
+}
+
int gic_iomem_deny_access(const struct domain *d)
{
return gic_hw_ops->iomem_deny_access(d);
diff --git a/xen/include/asm-arm/gic.h b/xen/include/asm-arm/gic.h
index 6203dc5..3acdd6d 100644
--- a/xen/include/asm-arm/gic.h
+++ b/xen/include/asm-arm/gic.h
@@ -365,6 +365,8 @@ struct gic_hw_operations {
int (*make_hwdom_madt)(const struct domain *d, u32 offset);
/* Map extra GIC MMIO, irqs and other hw stuffs to the hardware domain. */
int (*map_hwdom_extra_mappings)(struct domain *d);
+ /* Query the size of hardware domain madt table */
+ unsigned long (*get_hwdom_madt_size)(const struct domain *d);
/* Deny access to GIC regions */
int (*iomem_deny_access)(const struct domain *d);
/* Handle LPIs, which require special handling */
@@ -376,6 +378,7 @@ int gic_make_hwdom_dt_node(const struct domain *d,
const struct dt_device_node *gic,
void *fdt);
int gic_make_hwdom_madt(const struct domain *d, u32 offset);
+unsigned long gic_get_hwdom_madt_size(const struct domain *d);
int gic_map_hwdom_extra_mappings(struct domain *d);
int gic_iomem_deny_access(const struct domain *d);
Cheers,
--
Julien Grall
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