# HG changeset patch
# User Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
# Date 1219658677 -32400
# Node ID 1d565c0429cb19e1f684c1025d4f2be15658a9b8
# Parent 6607624285b213f9bcb66636593facbc143e2c7c
[IA64] introduce XEN_EFI_RR6 and XEN_EFI_RR7
for firmware rr6 is used for uncacned region
and rr7 is used for cachable region.
So rid must be different.
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
---
xen/arch/ia64/xen/ivt.S | 27 ++++++++++++++---------
xen/include/asm-ia64/linux-xen/linux/efi.h | 33 +++++++++++++++++++++--------
2 files changed, 40 insertions(+), 20 deletions(-)
diff -r 6607624285b2 -r 1d565c0429cb xen/arch/ia64/xen/ivt.S
--- a/xen/arch/ia64/xen/ivt.S Mon Aug 25 19:04:37 2008 +0900
+++ b/xen/arch/ia64/xen/ivt.S Mon Aug 25 19:04:37 2008 +0900
@@ -206,26 +206,31 @@ late_alt_dtlb_miss:
cmp.eq p8,p0=((VIRT_FRAME_TABLE_ADDR>>56)&0xff)-0x100,r22
(p8) br.cond.sptk frametable_miss ;;
#endif
- // If it is not a Xen address, handle it via page_fault.
- // !( ((r22 == 0x18 || r22 == 0x1c) && rr7 == XEN_EFI_RR) ||
- // r22 == 0x1e )
- // Note that rr7 == XEN_EFI_RR implies rr6 == XEN_EFI_RR
+ // !( (r22 == 0x18 && rr6 == XEN_EFI_RR6) ||
+ // (r22 == 0x1c && rr7 == XEN_EFI_RR7) ||
+ // r22 == 0x1e)
+
extr.u r22=r16,59,5
;;
dep r20=0,r20,IA64_ITIR_KEY,IA64_ITIR_KEY_LEN // clear the key
+ movl r24=6 << 61
movl r23=7 << 61
;;
+ mov r24=rr[r24]
mov r23=rr[r23]
;;
- mov r25=XEN_EFI_RR
+ movl r26=XEN_EFI_RR6
+ movl r25=XEN_EFI_RR7
+
cmp.eq p8,p0=0x18,r22 // 0xc...
- ;;
- cmp.eq.or p8,p0=0x1c,r22 // 0xe...
- ;;
- cmp.eq.and p8,p0=r25,r23 // rr7 == XEN_EFI_RR
- ;;
- cmp.eq.or p8,p0=0x1e,r22 // 0xf...
+ cmp.eq p9,p0=0x1c,r22 // 0xe...
+ ;;
+ cmp.eq.and p8,p0=r26,r24 // rr6 == XEN_EFI_RR6
+ cmp.eq.and p9,p0=r25,r23 // rr7 == XEN_EFI_RR7
+ ;;
+ cmp.eq.or p9,p0=0x1e,r22 // 0xf...
(p8) br.cond.spnt alt_dtlb_miss_identity_map
+(p9) br.cond.spnt alt_dtlb_miss_identity_map
br.cond.spnt page_fault
;;
alt_dtlb_miss_identity_map:
diff -r 6607624285b2 -r 1d565c0429cb xen/include/asm-ia64/linux-xen/linux/efi.h
--- a/xen/include/asm-ia64/linux-xen/linux/efi.h Mon Aug 25 19:04:37
2008 +0900
+++ b/xen/include/asm-ia64/linux-xen/linux/efi.h Mon Aug 25 19:04:37
2008 +0900
@@ -439,7 +439,7 @@ struct efi_generic_dev_path {
* e: bits 3-N: IA64_REGION_ID_KERNEL (1)
* f: bits N-53: reserved (0)
*
- * + Only 0 is used as we only need one RID. Its not really important
+ * + Only 6 and 7 are used as we only need two RIDs. Its not really important
* what this number is, so long as its between 0 and 7.
*
* The nice thing about this is that we are only using 4 bits of RID
@@ -464,7 +464,7 @@ struct efi_generic_dev_path {
* E: bits N-53: reserved (0)
*/
-/* rr7 (and rr6) may already be set to XEN_EFI_RR, which
+/* rr7 (and rr6) may already be set to XEN_EFI_RR7 (and XEN_EFI_RR6), which
* would indicate a nested EFI, SAL or PAL call, such
* as from an MCA. This may have occured during a call
* to set_one_rr_efi(). To be safe, repin everything anyway.
@@ -473,8 +473,8 @@ struct efi_generic_dev_path {
#define XEN_EFI_RR_ENTER(rr6, rr7) do { \
rr6 = ia64_get_rr(6UL << 61); \
rr7 = ia64_get_rr(7UL << 61); \
- set_one_rr_efi(6UL << 61, XEN_EFI_RR); \
- set_one_rr_efi(7UL << 61, XEN_EFI_RR); \
+ set_one_rr_efi(6UL << 61, XEN_EFI_RR6); \
+ set_one_rr_efi(7UL << 61, XEN_EFI_RR7); \
efi_map_pal_code(); \
} while (0)
@@ -485,7 +485,7 @@ struct efi_generic_dev_path {
*/
#define XEN_EFI_RR_LEAVE(rr6, rr7) do { \
- if (rr7 != XEN_EFI_RR) { \
+ if (rr7 != XEN_EFI_RR7) { \
efi_unmap_pal_code(); \
set_one_rr_efi_restore(6UL << 61, rr6); \
set_one_rr_efi_restore(7UL << 61, rr7); \
@@ -507,10 +507,25 @@ struct efi_generic_dev_path {
#ifdef XEN
#include <asm/mmu_context.h> /* For IA64_REGION_ID_EFI and ia64_rid() */
#include <asm/pgtable.h> /* IA64_GRANULE_SHIFT */
-#define XEN_EFI_REGION_NO __IA64_UL_CONST(0)
-#define XEN_EFI_RR ((ia64_rid(XEN_IA64_REGION_ID_EFI, \
- XEN_EFI_REGION_NO) << 8) | \
- (IA64_GRANULE_SHIFT << 2))
+
+/* macro version of vmMangleRID() */
+#define XEN_EFI_VM_MANGLE_RRVAL(rrval) \
+ ((((rrval) & 0xff000000) >> 16) | \
+ ((rrval) & 0x00ff0000) | \
+ (((rrval) & 0x0000ff00) << 16 ) | \
+ ((rrval) & 0x000000ff))
+
+#define XEN_EFI_REGION6 __IA64_UL_CONST(6)
+#define XEN_EFI_REGION7 __IA64_UL_CONST(7)
+#define _XEN_EFI_RR6 ((ia64_rid(XEN_IA64_REGION_ID_EFI,
\
+ XEN_EFI_REGION6) << 8) | \
+ (IA64_GRANULE_SHIFT << 2))
+#define _XEN_EFI_RR7 ((ia64_rid(XEN_IA64_REGION_ID_EFI,
\
+ XEN_EFI_REGION7) << 8) | \
+ (IA64_GRANULE_SHIFT << 2))
+#define XEN_EFI_RR6 XEN_EFI_VM_MANGLE_RRVAL(_XEN_EFI_RR6)
+#define XEN_EFI_RR7 XEN_EFI_VM_MANGLE_RRVAL(_XEN_EFI_RR7)
+
#endif /* XEN */
#endif /* _LINUX_EFI_H */
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