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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen master] dom0less: Introduce kernel_info into the domain creation loop
commit 83e9b3541214680131070069294092b91f3e1ece
Author: Alejandro Vallejo <alejandro.garciavallejo@xxxxxxx>
AuthorDate: Tue Jul 22 13:59:45 2025 +0200
Commit: Stefano Stabellini <stefano.stabellini@xxxxxxx>
CommitDate: Wed Jul 23 13:35:51 2025 -0700
dom0less: Introduce kernel_info into the domain creation loop
In later patches boot_domain becomes the common ground for the bindings
to drop the extracted information. In preparation for the bindings
themselves to be in a separate function, introduce kernel_info early in
the domain construction loop.
This simplifies a later diff, turning it into a strict cut-and-paste, rather
than a mutate-on-move.
Lines after domain_create() don't make use of the "d_cfg" and "flags"
variables because those will disappear when the bindings move to a
separate file.
Signed-off-by: Alejandro Vallejo <alejandro.garciavallejo@xxxxxxx>
Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxx>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xxxxxxx>
Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
---
xen/common/device-tree/dom0less-build.c | 109 ++++++++++++++++----------------
1 file changed, 54 insertions(+), 55 deletions(-)
diff --git a/xen/common/device-tree/dom0less-build.c
b/xen/common/device-tree/dom0less-build.c
index e49213e763..cee666786e 100644
--- a/xen/common/device-tree/dom0less-build.c
+++ b/xen/common/device-tree/dom0less-build.c
@@ -732,10 +732,10 @@ static inline int __init domain_p2m_set_allocation(
}
#endif /* CONFIG_ARCH_PAGING_MEMPOOL */
-static int __init construct_domU(struct domain *d,
+static int __init construct_domU(struct kernel_info *kinfo,
const struct dt_device_node *node)
{
- struct kernel_info kinfo = KERNEL_INFO_INIT;
+ struct domain *d = kinfo->bd.d;
const char *dom0less_enhanced;
int rc;
u64 mem;
@@ -746,7 +746,7 @@ static int __init construct_domU(struct domain *d,
printk("Error building DomU: cannot read \"memory\" property\n");
return -EINVAL;
}
- kinfo.unassigned_mem = (paddr_t)mem * SZ_1K;
+ kinfo->unassigned_mem = (paddr_t)mem * SZ_1K;
rc = domain_p2m_set_allocation(d, mem, node);
if ( rc != 0 )
@@ -761,66 +761,64 @@ static int __init construct_domU(struct domain *d,
(rc == 0 && !strcmp(dom0less_enhanced, "enabled")) )
{
need_xenstore = true;
- kinfo.dom0less_feature = DOM0LESS_ENHANCED;
+ kinfo->dom0less_feature = DOM0LESS_ENHANCED;
}
else if ( rc == 0 && !strcmp(dom0less_enhanced, "legacy") )
{
need_xenstore = true;
- kinfo.dom0less_feature = DOM0LESS_ENHANCED_LEGACY;
+ kinfo->dom0less_feature = DOM0LESS_ENHANCED_LEGACY;
}
else if ( rc == 0 && !strcmp(dom0less_enhanced, "no-xenstore") )
- kinfo.dom0less_feature = DOM0LESS_ENHANCED_NO_XS;
+ kinfo->dom0less_feature = DOM0LESS_ENHANCED_NO_XS;
if ( vcpu_create(d, 0) == NULL )
return -ENOMEM;
d->max_pages = ((paddr_t)mem * SZ_1K) >> PAGE_SHIFT;
- kinfo.bd.d = d;
-
- rc = kernel_probe(&kinfo, node);
+ rc = kernel_probe(kinfo, node);
if ( rc < 0 )
return rc;
- set_domain_type(d, &kinfo);
+ set_domain_type(d, kinfo);
if ( is_hardware_domain(d) )
{
- rc = construct_hwdom(&kinfo, node);
+ rc = construct_hwdom(kinfo, node);
if ( rc < 0 )
return rc;
}
else
{
if ( !dt_find_property(node, "xen,static-mem", NULL) )
- allocate_memory(d, &kinfo);
+ allocate_memory(d, kinfo);
else if ( !is_domain_direct_mapped(d) )
- allocate_static_memory(d, &kinfo, node);
+ allocate_static_memory(d, kinfo, node);
else
- assign_static_memory_11(d, &kinfo, node);
+ assign_static_memory_11(d, kinfo, node);
- rc = process_shm(d, &kinfo, node);
+ rc = process_shm(d, kinfo, node);
if ( rc < 0 )
return rc;
- rc = init_vuart(d, &kinfo, node);
+ rc = init_vuart(d, kinfo, node);
if ( rc < 0 )
return rc;
- rc = prepare_dtb_domU(d, &kinfo);
+ rc = prepare_dtb_domU(d, kinfo);
if ( rc < 0 )
return rc;
- rc = construct_domain(d, &kinfo);
+ rc = construct_domain(d, kinfo);
if ( rc < 0 )
return rc;
}
domain_vcpu_affinity(d, node);
- rc = alloc_xenstore_params(&kinfo);
+ rc = alloc_xenstore_params(kinfo);
- rangeset_destroy(kinfo.xen_reg_assigned);
+ rangeset_destroy(kinfo->xen_reg_assigned);
return rc;
}
@@ -837,9 +835,9 @@ void __init create_domUs(void)
dt_for_each_child_node(chosen, node)
{
const char *llc_colors_str = NULL;
- struct domain *d;
- struct xen_domctl_createdomain d_cfg = {0};
- unsigned int flags = 0U;
+ struct kernel_info ki = KERNEL_INFO_INIT;
+ struct xen_domctl_createdomain *d_cfg = &ki.bd.create_cfg;
+ unsigned int *flags = &ki.bd.create_flags;
bool has_dtb = false;
uint32_t val;
int rc;
@@ -850,10 +848,10 @@ void __init create_domUs(void)
if ( (max_init_domid + 1) >= DOMID_FIRST_RESERVED )
panic("No more domain IDs available\n");
- d_cfg.max_evtchn_port = 1023;
- d_cfg.max_grant_frames = -1;
- d_cfg.max_maptrack_frames = -1;
- d_cfg.grant_opts = XEN_DOMCTL_GRANT_version(opt_gnttab_max_version);
+ d_cfg->max_evtchn_port = 1023;
+ d_cfg->max_grant_frames = -1;
+ d_cfg->max_maptrack_frames = -1;
+ d_cfg->grant_opts = XEN_DOMCTL_GRANT_version(opt_gnttab_max_version);
if ( dt_property_read_u32(node, "capabilities", &val) )
{
@@ -861,7 +859,7 @@ void __init create_domUs(void)
panic("Invalid capabilities (%"PRIx32")\n", val);
if ( val & DOMAIN_CAPS_CONTROL )
- flags |= CDF_privileged;
+ *flags |= CDF_privileged;
if ( val & DOMAIN_CAPS_HARDWARE )
{
@@ -870,17 +868,17 @@ void __init create_domUs(void)
hardware_domain);
#ifdef CONFIG_GRANT_TABLE
- d_cfg.max_grant_frames = gnttab_dom0_frames();
+ d_cfg->max_grant_frames = gnttab_dom0_frames();
#endif
- d_cfg.max_evtchn_port = -1;
- flags |= CDF_hardware;
+ d_cfg->max_evtchn_port = -1;
+ *flags |= CDF_hardware;
iommu = true;
}
if ( val & DOMAIN_CAPS_XENSTORE )
{
- d_cfg.flags |= XEN_DOMCTL_CDF_xs_domain;
- d_cfg.max_evtchn_port = -1;
+ d_cfg->flags |= XEN_DOMCTL_CDF_xs_domain;
+ d_cfg->max_evtchn_port = -1;
}
}
@@ -889,45 +887,45 @@ void __init create_domUs(void)
if ( llc_coloring_enabled )
panic("LLC coloring and static memory are incompatible\n");
- flags |= CDF_staticmem;
+ *flags |= CDF_staticmem;
}
if ( dt_property_read_bool(node, "direct-map") )
{
- if ( !(flags & CDF_staticmem) )
+ if ( !(*flags & CDF_staticmem) )
panic("direct-map is not valid for domain %s without static
allocation.\n",
dt_node_name(node));
- flags |= CDF_directmap;
+ *flags |= CDF_directmap;
}
- if ( !dt_property_read_u32(node, "cpus", &d_cfg.max_vcpus) )
+ if ( !dt_property_read_u32(node, "cpus", &d_cfg->max_vcpus) )
panic("Missing property 'cpus' for domain %s\n",
dt_node_name(node));
if ( !dt_property_read_string(node, "passthrough", &dom0less_iommu) )
{
- if ( flags & CDF_hardware )
+ if ( *flags & CDF_hardware )
panic("Don't specify passthrough for hardware domain\n");
if ( !strcmp(dom0less_iommu, "enabled") )
iommu = true;
}
- if ( (flags & CDF_hardware) && !(flags & CDF_directmap) &&
+ if ( (*flags & CDF_hardware) && !(*flags & CDF_directmap) &&
!iommu_enabled )
panic("non-direct mapped hardware domain requires iommu\n");
if ( dt_find_compatible_node(node, NULL, "multiboot,device-tree") )
{
- if ( flags & CDF_hardware )
+ if ( *flags & CDF_hardware )
panic("\"multiboot,device-tree\" incompatible with hardware
domain\n");
has_dtb = true;
}
if ( iommu_enabled && (iommu || has_dtb) )
- d_cfg.flags |= XEN_DOMCTL_CDF_iommu;
+ d_cfg->flags |= XEN_DOMCTL_CDF_iommu;
/* Get the optional property domain-cpupool */
cpupool_node = dt_parse_phandle(node, "domain-cpupool", 0);
@@ -937,57 +935,58 @@ void __init create_domUs(void)
if ( pool_id < 0 )
panic("Error getting cpupool id from domain-cpupool (%d)\n",
pool_id);
- d_cfg.cpupool_id = pool_id;
+ d_cfg->cpupool_id = pool_id;
}
if ( dt_property_read_u32(node, "max_grant_version", &val) )
- d_cfg.grant_opts = XEN_DOMCTL_GRANT_version(val);
+ d_cfg->grant_opts = XEN_DOMCTL_GRANT_version(val);
if ( dt_property_read_u32(node, "max_grant_frames", &val) )
{
if ( val > INT32_MAX )
panic("max_grant_frames (%"PRIu32") overflow\n", val);
- d_cfg.max_grant_frames = val;
+ d_cfg->max_grant_frames = val;
}
if ( dt_property_read_u32(node, "max_maptrack_frames", &val) )
{
if ( val > INT32_MAX )
panic("max_maptrack_frames (%"PRIu32") overflow\n", val);
- d_cfg.max_maptrack_frames = val;
+ d_cfg->max_maptrack_frames = val;
}
dt_property_read_string(node, "llc-colors", &llc_colors_str);
if ( !llc_coloring_enabled && llc_colors_str )
panic("'llc-colors' found, but LLC coloring is disabled\n");
- arch_create_domUs(node, &d_cfg, flags);
+ arch_create_domUs(node, d_cfg, *flags);
/*
* The variable max_init_domid is initialized with zero, so here it's
* very important to use the pre-increment operator to call
* domain_create() with a domid > 0. (domid == 0 is reserved for Dom0)
*/
- d = domain_create(++max_init_domid, &d_cfg, flags);
- if ( IS_ERR(d) )
+ ki.bd.d = domain_create(++max_init_domid,
+ &ki.bd.create_cfg, ki.bd.create_flags);
+ if ( IS_ERR(ki.bd.d) )
panic("Error creating domain %s (rc = %ld)\n",
- dt_node_name(node), PTR_ERR(d));
+ dt_node_name(node), PTR_ERR(ki.bd.d));
if ( llc_coloring_enabled &&
- (rc = domain_set_llc_colors_from_str(d, llc_colors_str)) )
+ (rc = domain_set_llc_colors_from_str(ki.bd.d, llc_colors_str)) )
panic("Error initializing LLC coloring for domain %s (rc = %d)\n",
dt_node_name(node), rc);
- d->is_console = true;
- dt_device_set_used_by(node, d->domain_id);
+ ki.bd.d->is_console = true;
+ dt_device_set_used_by(node, ki.bd.d->domain_id);
- rc = construct_domU(d, node);
+ rc = construct_domU(&ki, node);
if ( rc )
panic("Could not set up domain %s (rc = %d)\n",
dt_node_name(node), rc);
- if ( d_cfg.flags & XEN_DOMCTL_CDF_xs_domain )
- set_xs_domain(d);
+ if ( ki.bd.create_cfg.flags & XEN_DOMCTL_CDF_xs_domain )
+ set_xs_domain(ki.bd.d);
}
if ( need_xenstore && xs_domid == DOMID_INVALID )
--
generated by git-patchbot for /home/xen/git/xen.git#master
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