diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2006-10-12 16:20:59 -0600 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2006-10-17 14:53:52 -0700 |
| commit | c12fb1885787dcc2e20c4b88149e1e607e1293b2 (patch) | |
| tree | b607d2cf6e4915b5005a2c98a7efea0742103e28 /arch/ia64/kernel/pal.S | |
| parent | accaddb27a2d544e38e10ff2a2782b33bbbad913 (diff) | |
[IA64] remove unused PAL_CALL_IC_OFF
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@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel/pal.S')
| -rw-r--r-- | arch/ia64/kernel/pal.S | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/arch/ia64/kernel/pal.S b/arch/ia64/kernel/pal.S index ebaf1e685f5..5f50e6bbc68 100644 --- a/arch/ia64/kernel/pal.S +++ b/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 |