[Xen-devel] [RFC PATCH 61/84] x86: lift domain mapcache to arch_domain

[<hongyax@xxxxxxxxxx>]

From: Wei Liu <wei.liu2@xxxxxxxxxx>

It is going to be needed by HVM as well, because we want even HVM
domain to have a per-domain mapcache.

No functional change.

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 xen/arch/x86/domain.c        |  4 ++--
 xen/arch/x86/domain_page.c   | 10 ++++------
 xen/include/asm-x86/domain.h |  6 +++---
 3 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index 75e89b81bf..083b413a70 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -617,6 +617,8 @@ int arch_domain_create(struct domain *d,
 
     psr_domain_init(d);
 
+    mapcache_domain_init(d);
+
     if ( is_hvm_domain(d) )
     {
         if ( (rc = hvm_domain_initialise(d)) != 0 )
@@ -624,8 +626,6 @@ int arch_domain_create(struct domain *d,
     }
     else if ( is_pv_domain(d) )
     {
-        mapcache_domain_init(d);
-
         if ( (rc = pv_domain_initialise(d)) != 0 )
             goto fail;
     }
diff --git a/xen/arch/x86/domain_page.c b/xen/arch/x86/domain_page.c
index bece9d8cd0..9a1cc5bb40 100644
--- a/xen/arch/x86/domain_page.c
+++ b/xen/arch/x86/domain_page.c
@@ -94,7 +94,7 @@ void *map_domain_page(mfn_t mfn)
         return ret;
     }
 
-    dcache = &v->domain->arch.pv.mapcache;
+    dcache = &v->domain->arch.mapcache;
     vcache = &v->arch.pv.mapcache;
     if ( !dcache->inuse )
     {
@@ -210,7 +210,7 @@ void unmap_domain_page(const void *ptr)
     v = mapcache_current_vcpu();
     ASSERT(v && is_pv_vcpu(v));
 
-    dcache = &v->domain->arch.pv.mapcache;
+    dcache = &v->domain->arch.mapcache;
     ASSERT(dcache->inuse);
 
     idx = PFN_DOWN(va - MAPCACHE_VIRT_START);
@@ -254,11 +254,9 @@ void unmap_domain_page(const void *ptr)
 
 int mapcache_domain_init(struct domain *d)
 {
-    struct mapcache_domain *dcache = &d->arch.pv.mapcache;
+    struct mapcache_domain *dcache = &d->arch.mapcache;
     unsigned int bitmap_pages;
 
-    ASSERT(is_pv_domain(d));
-
 #ifdef NDEBUG
     if ( !mem_hotplug && max_page <= PFN_DOWN(__pa(HYPERVISOR_VIRT_END - 1)) )
         return 0;
@@ -282,7 +280,7 @@ int mapcache_domain_init(struct domain *d)
 int mapcache_vcpu_init(struct vcpu *v)
 {
     struct domain *d = v->domain;
-    struct mapcache_domain *dcache = &d->arch.pv.mapcache;
+    struct mapcache_domain *dcache = &d->arch.mapcache;
     unsigned long i;
     unsigned int ents = d->max_vcpus * MAPCACHE_VCPU_ENTRIES;
     unsigned int nr = PFN_UP(BITS_TO_LONGS(ents) * sizeof(long));
diff --git a/xen/include/asm-x86/domain.h b/xen/include/asm-x86/domain.h
index 7cebfa4fb9..2c7b4df34c 100644
--- a/xen/include/asm-x86/domain.h
+++ b/xen/include/asm-x86/domain.h
@@ -260,9 +260,6 @@ struct pv_domain
     /* Mitigate L1TF with shadow/crashing? */
     bool check_l1tf;
 
-    /* map_domain_page() mapping cache. */
-    struct mapcache_domain mapcache;
-
     struct cpuidmasks *cpuidmasks;
 };
 
@@ -295,6 +292,9 @@ struct arch_domain
     uint32_t pci_cf8;
     uint8_t cmos_idx;
 
+    /* map_domain_page() mapping cache. */
+    struct mapcache_domain mapcache;
+
     union {
         struct pv_domain pv;
         struct hvm_domain hvm;
-- 
2.17.1


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