[Xen-ia64-devel] [PATCH 9/16] domheap: don't refer struct domain from GET_VA_VCPU_VHPT_MADDR()

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1198583581 -32400
# Node ID 7c7f9fd34531fb7e66e1ea26733370f4eb52085f
# Parent  105c577732e610b2a20d44098aab17615e2e47d6
don't refer struct domain from GET_VA_VCPU_VHPT_MADDR()
So far, current->domain->arch.flags.has_pervcpu_vhpt is used.
Instead use current->arch.vhpt_page.
PATCHNAME: mca_dont_refer_struct_domain

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r 105c577732e6 -r 7c7f9fd34531 xen/arch/ia64/asm-offsets.c
--- a/xen/arch/ia64/asm-offsets.c       Mon Jan 07 16:14:49 2008 +0900
+++ b/xen/arch/ia64/asm-offsets.c       Tue Dec 25 20:53:01 2007 +0900
@@ -252,9 +252,8 @@ void foo(void)
        DEFINE(IA64_MCA_CPU_RBSTORE_OFFSET,
               offsetof(struct ia64_mca_cpu, rbstore));
 
-       DEFINE(IA64_DOMAIN_FLAGS_OFFSET,
-              offsetof(struct domain, arch.flags));
-
+       DEFINE(IA64_VCPU_VHPT_PAGE_OFFSET,
+              offsetof(struct vcpu, arch.vhpt_page));
        DEFINE(IA64_VCPU_VHPT_MADDR_OFFSET,
               offsetof(struct vcpu, arch.vhpt_maddr));
 
diff -r 105c577732e6 -r 7c7f9fd34531 xen/arch/ia64/linux-xen/mca_asm.S
--- a/xen/arch/ia64/linux-xen/mca_asm.S Mon Jan 07 16:14:49 2008 +0900
+++ b/xen/arch/ia64/linux-xen/mca_asm.S Tue Dec 25 20:53:01 2007 +0900
@@ -196,13 +196,9 @@ 3: add r4 = r6, r3;;                                       
\
        add reg=IA64_KR_CURRENT_OFFSET,reg;;                    \
        ld8 reg=[reg];;                                         \
        dep tmp=0,reg,60,4;;                    /* V to P */    \
-       add tmp=IA64_VCPU_DOMAIN_OFFSET,tmp;;                   \
+       add tmp=IA64_VCPU_VHPT_PAGE_OFFSET,tmp;;                \
        ld8 tmp=[tmp];;                                         \
-       dep tmp=0,tmp,60,4;;                    /* V to P */    \
-       add tmp=IA64_DOMAIN_FLAGS_OFFSET,tmp;;                  \
-       ld8 tmp=[tmp];;                                         \
-       and tmp=HAS_PERVCPU_VHPT_MASK,tmp;;                     \
-       cmp.eq p6,p0=tmp,r0;                                    \
+       cmp.eq p6,p0=tmp,r0;    /* v->arch.vhpt_page == NULL */ \
 (p6)   br.cond.sptk 1f;                                        \
        add reg=IA64_VCPU_VHPT_MADDR_OFFSET,reg;;               \
        dep reg=0,reg,60,4;;                    /* V to P */    \

Attachment: 16703_7c7f9fd34531_mca_dont_refer_struct_domain.patch
Description: Text Data

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