On Thu, May 08, 2008 at 08:57:28AM +1000, Simon Horman wrote:
> On Wed, May 07, 2008 at 05:31:21PM +0900, Isaku Yamahata wrote:
> > Hi Simon-san.
> > I guess that this patch isn't copmiled as inteneded.
> > With the VHPT_ENABLED patch which make sure VHPT_ENABLED always
> > defined to 1 or 0, I got compilation errors.
> >
> >
> > [IA64] compilation fix with VHPT_ENABLED=1
> >
> > Enabling VHPT_ENABLED=1 results in compilation error in vmx_phy_mode.c
> > and vmx_vcpu.c. This patch fixes them.
> > vmx_phy_mode.c: In function 'vmx_load_all_rr':
> > vmx_phy_mode.c:175: warning: implicit declaration of function
> > 'vcpu_vhpt_maddr'
> > vmx_phy_mode.c:175: error: 'v' undeclared (first use in this function)
> > vmx_phy_mode.c:175: error: (Each undeclared identifier is reported only once
> > vmx_phy_mode.c:175: error: for each function it appears in.)
> > PATCHNAME: compilation_fix_with_vhpt_enabled
> >
> > Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
>
> Thanks Yamahata-san,
>
> that looks correct to me. I have a related fix to the same code which
> alters the value that is tracked. Do you think this is correct:
The patch itself looks correct.
Related to the patch, do you mean that another #if VHPT_ENABLED in
xen/arch/ia64/linux-xen/mca_asm.S should be removed and that
the around code should be patched somehow?
diff -r 07e367fbd2b2 xen/arch/ia64/linux-xen/mca_asm.S
--- a/xen/arch/ia64/linux-xen/mca_asm.S Wed May 07 17:14:08 2008 +0900
+++ b/xen/arch/ia64/linux-xen/mca_asm.S Thu May 08 16:06:12 2008 +0900
@@ -519,8 +488,9 @@
#ifdef XEN
.reload_vhpt:
// 5. VHPT
-#if VHPT_ENABLED
- GET_VA_VCPU_VHPT_MADDR(r2,r3);;
+ GET_THIS_PADDR(r1, inserted_vhpt);;
+ cmp.eq p7,p0=r2,r0
+(p7) br.cond.sptk .overlap_vhpt // vhpt isn't mapped.
// avoid overlapping with stack TR
shr.u r17=r2,IA64_GRANULE_SHIFT
@@ -550,7 +520,6 @@
srlz.d
;;
.overlap_vhpt:
-#endif
#endif
br.sptk.many done_tlb_purge_and_reload
err:
--
yamahata
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