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| author | Isaku Yamahata <yamahata@valinux.co.jp> | 2008-10-17 11:18:13 +0900 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2008-10-17 10:12:54 -0700 |
| commit | f8d1f99f3958c46cdc983743d75d0b31b9accb80 (patch) | |
| tree | ef91c20de242e67db557e831aa28f9e9597dabef /arch/ia64/kernel | |
| parent | 98c99d7c27973538081a809c114b8d5c6195ecfa (diff) | |
| download | kernel_samsung_smdk4412-f8d1f99f3958c46cdc983743d75d0b31b9accb80.zip kernel_samsung_smdk4412-f8d1f99f3958c46cdc983743d75d0b31b9accb80.tar.gz kernel_samsung_smdk4412-f8d1f99f3958c46cdc983743d75d0b31b9accb80.tar.bz2 | |
ia64/pv_ops: paravirtualized instruction checker.
This patch implements a checker to detect instructions which
should be paravirtualized instead of direct writing raw instruction.
This patch does rough check so that it doesn't fully cover all cases,
but it can detects most cases of paravirtualization breakage of hand
written assembly codes.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel')
| -rw-r--r-- | arch/ia64/kernel/Makefile | 18 | ||||
| -rw-r--r-- | arch/ia64/kernel/paravirt_inst.h | 4 |
2 files changed, 21 insertions, 1 deletions
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index 87fea11..55e6ca8 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -112,5 +112,23 @@ clean-files += $(objtree)/include/asm-ia64/nr-irqs.h ASM_PARAVIRT_OBJS = ivt.o entry.o define paravirtualized_native AFLAGS_$(1) += -D__IA64_ASM_PARAVIRTUALIZED_NATIVE +AFLAGS_pvchk-sed-$(1) += -D__IA64_ASM_PARAVIRTUALIZED_PVCHECK +extra-y += pvchk-$(1) endef $(foreach obj,$(ASM_PARAVIRT_OBJS),$(eval $(call paravirtualized_native,$(obj)))) + +# +# Checker for paravirtualizations of privileged operations. +# +quiet_cmd_pv_check_sed = PVCHK $@ +define cmd_pv_check_sed + sed -f $(srctree)/arch/$(SRCARCH)/scripts/pvcheck.sed $< > $@ +endef + +$(obj)/pvchk-sed-%.s: $(src)/%.S $(srctree)/arch/$(SRCARCH)/scripts/pvcheck.sed FORCE + $(call if_changed_dep,as_s_S) +$(obj)/pvchk-%.s: $(obj)/pvchk-sed-%.s FORCE + $(call if_changed,pv_check_sed) +$(obj)/pvchk-%.o: $(obj)/pvchk-%.s FORCE + $(call if_changed,as_o_S) +.PRECIOUS: $(obj)/pvchk-sed-%.s $(obj)/pvchk-%.s $(obj)/pvchk-%.o diff --git a/arch/ia64/kernel/paravirt_inst.h b/arch/ia64/kernel/paravirt_inst.h index 5cad6fb..64d6d81 100644 --- a/arch/ia64/kernel/paravirt_inst.h +++ b/arch/ia64/kernel/paravirt_inst.h @@ -20,7 +20,9 @@ * */ -#ifdef __IA64_ASM_PARAVIRTUALIZED_XEN +#ifdef __IA64_ASM_PARAVIRTUALIZED_PVCHECK +#include <asm/native/pvchk_inst.h> +#elif defined(__IA64_ASM_PARAVIRTUALIZED_XEN) #include <asm/xen/inst.h> #include <asm/xen/minstate.h> #else |