The patch titled
ia64: remove unused PAL_CALL_IC_OFF
has been added to the -mm tree. Its filename is
ia64-remove-unused-pal_call_ic_off.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: ia64: remove unused PAL_CALL_IC_OFF
From: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
Linux maps PAL instructions with an ITR, but uses a DTC for PAL data.
Section 11.10.2.1.3, "Making PAL Procedures Calls in Physical or Virtual
Mode," of the SDM (rev 2.2), says we must therefore make all PAL calls with
PSR.ic = 1 so that Linux can handle any TLB faults.
PAL_CALL_IC_OFF is currently unused, and as long as we use the ITR + DTC
strategy, we can't use it. So remove it. I also removed the code in
ia64_pal_call_static() that conditionally cleared PSR.ic.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
Cc: "Luck, Tony" <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/ia64/kernel/pal.S | 11 +++--------
include/asm-ia64/pal.h | 11 ++---------
2 files changed, 5 insertions(+), 17 deletions(-)
diff -puN arch/ia64/kernel/pal.S~ia64-remove-unused-pal_call_ic_off arch/ia64/kernel/pal.S
--- a/arch/ia64/kernel/pal.S~ia64-remove-unused-pal_call_ic_off
+++ a/arch/ia64/kernel/pal.S
@@ -50,12 +50,10 @@ END(ia64_pal_default_handler)
*
* in0 Index of PAL service
* in1 - in3 Remaining PAL arguments
- * in4 1 ==> clear psr.ic, 0 ==> don't clear psr.ic
- *
*/
GLOBAL_ENTRY(ia64_pal_call_static)
- .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(5)
- alloc loc1 = ar.pfs,5,5,0,0
+ .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(4)
+ alloc loc1 = ar.pfs,4,5,0,0
movl loc2 = pal_entry_point
1: {
mov r28 = in0
@@ -64,7 +62,6 @@ GLOBAL_ENTRY(ia64_pal_call_static)
}
;;
ld8 loc2 = [loc2] // loc2 <- entry point
- tbit.nz p6,p7 = in4, 0
adds r8 = 1f-1b,r8
mov loc4=ar.rsc // save RSE configuration
;;
@@ -74,13 +71,11 @@ GLOBAL_ENTRY(ia64_pal_call_static)
.body
mov r30 = in2
-(p6) rsm psr.i | psr.ic
mov r31 = in3
mov b7 = loc2
-(p7) rsm psr.i
+ rsm psr.i
;;
-(p6) srlz.i
mov rp = r8
br.cond.sptk.many b7
1: mov psr.l = loc3
diff -puN include/asm-ia64/pal.h~ia64-remove-unused-pal_call_ic_off include/asm-ia64/pal.h
--- a/include/asm-ia64/pal.h~ia64-remove-unused-pal_call_ic_off
+++ a/include/asm-ia64/pal.h
@@ -764,7 +764,7 @@ struct ia64_pal_retval {
* (generally 0) MUST be passed. Reserved parameters are not optional
* parameters.
*/
-extern struct ia64_pal_retval ia64_pal_call_static (u64, u64, u64, u64, u64);
+extern struct ia64_pal_retval ia64_pal_call_static (u64, u64, u64, u64);
extern struct ia64_pal_retval ia64_pal_call_stacked (u64, u64, u64, u64);
extern struct ia64_pal_retval ia64_pal_call_phys_static (u64, u64, u64, u64);
extern struct ia64_pal_retval ia64_pal_call_phys_stacked (u64, u64, u64, u64);
@@ -774,14 +774,7 @@ extern void ia64_load_scratch_fpregs (st
#define PAL_CALL(iprv,a0,a1,a2,a3) do { \
struct ia64_fpreg fr[6]; \
ia64_save_scratch_fpregs(fr); \
- iprv = ia64_pal_call_static(a0, a1, a2, a3, 0); \
- ia64_load_scratch_fpregs(fr); \
-} while (0)
-
-#define PAL_CALL_IC_OFF(iprv,a0,a1,a2,a3) do { \
- struct ia64_fpreg fr[6]; \
- ia64_save_scratch_fpregs(fr); \
- iprv = ia64_pal_call_static(a0, a1, a2, a3, 1); \
+ iprv = ia64_pal_call_static(a0, a1, a2, a3); \
ia64_load_scratch_fpregs(fr); \
} while (0)
_
Patches currently in -mm which might be from bjorn.helgaas@xxxxxx are
2.6-sony_acpi4.patch
ia64-remove-unused-pal_call_ic_off.patch
serial-trivial-code-flow-simplification.patch
pnp-handle-sysfs-errors.patch
ioremap-balanced-with-iounmap-for-drivers-video-hpfb.patch
-
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