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linux/arch/ia64/kernel/paravirt.c
Ingo Molnar c5905afb0e static keys: Introduce 'struct static_key', static_key_true()/false() and static_key_slow_[inc|dec]() 
So here's a boot tested patch on top of Jason's series that does
all the cleanups I talked about and turns jump labels into a
more intuitive to use facility. It should also address the
various misconceptions and confusions that surround jump labels.

Typical usage scenarios:

        #include <linux/static_key.h>

        struct static_key key = STATIC_KEY_INIT_TRUE;

        if (static_key_false(&key))
                do unlikely code
        else
                do likely code

Or:

        if (static_key_true(&key))
                do likely code
        else
                do unlikely code

The static key is modified via:

        static_key_slow_inc(&key);
        ...
        static_key_slow_dec(&key);

The 'slow' prefix makes it abundantly clear that this is an
expensive operation.

I've updated all in-kernel code to use this everywhere. Note
that I (intentionally) have not pushed through the rename
blindly through to the lowest levels: the actual jump-label
patching arch facility should be named like that, so we want to
decouple jump labels from the static-key facility a bit.

On non-jump-label enabled architectures static keys default to
likely()/unlikely() branches.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jason Baron <jbaron@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: a.p.zijlstra@chello.nl
Cc: mathieu.desnoyers@efficios.com
Cc: davem@davemloft.net
Cc: ddaney.cavm@gmail.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20120222085809.GA26397@elte.hu
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-02-24 10:05:59 +01:00

903 lines
26 KiB
C
Raw Blame History

/******************************************************************************
* arch/ia64/kernel/paravirt.c
*
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
* Yaozu (Eddie) Dong <eddie.dong@intel.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/init.h>
#include <linux/compiler.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/types.h>
#include <asm/iosapic.h>
#include <asm/paravirt.h>
/***************************************************************************
* general info
*/
struct pv_info pv_info = {
.kernel_rpl = 0,
.paravirt_enabled = 0,
.name = "bare hardware"
};
/***************************************************************************
* pv_init_ops
* initialization hooks.
*/
static void __init
ia64_native_patch_branch(unsigned long tag, unsigned long type);
struct pv_init_ops pv_init_ops =
{
#ifdef ASM_SUPPORTED
.patch_bundle = ia64_native_patch_bundle,
#endif
.patch_branch = ia64_native_patch_branch,
};
/***************************************************************************
* pv_cpu_ops
* intrinsics hooks.
*/
#ifndef ASM_SUPPORTED
/* ia64_native_xxx are macros so that we have to make them real functions */
#define DEFINE_VOID_FUNC1(name) \
static void \
ia64_native_ ## name ## _func(unsigned long arg) \
{ \
ia64_native_ ## name(arg); \
}
#define DEFINE_VOID_FUNC1_VOID(name) \
static void \
ia64_native_ ## name ## _func(void *arg) \
{ \
ia64_native_ ## name(arg); \
}
#define DEFINE_VOID_FUNC2(name) \
static void \
ia64_native_ ## name ## _func(unsigned long arg0, \
unsigned long arg1) \
{ \
ia64_native_ ## name(arg0, arg1); \
}
#define DEFINE_FUNC0(name) \
static unsigned long \
ia64_native_ ## name ## _func(void) \
{ \
return ia64_native_ ## name(); \
}
#define DEFINE_FUNC1(name, type) \
static unsigned long \
ia64_native_ ## name ## _func(type arg) \
{ \
return ia64_native_ ## name(arg); \
} \
DEFINE_VOID_FUNC1_VOID(fc);
DEFINE_VOID_FUNC1(intrin_local_irq_restore);
DEFINE_VOID_FUNC2(ptcga);
DEFINE_VOID_FUNC2(set_rr);
DEFINE_FUNC0(get_psr_i);
DEFINE_FUNC1(thash, unsigned long);
DEFINE_FUNC1(get_cpuid, int);
DEFINE_FUNC1(get_pmd, int);
DEFINE_FUNC1(get_rr, unsigned long);
static void
ia64_native_ssm_i_func(void)
{
ia64_native_ssm(IA64_PSR_I);
}
static void
ia64_native_rsm_i_func(void)
{
ia64_native_rsm(IA64_PSR_I);
}
static void
ia64_native_set_rr0_to_rr4_func(unsigned long val0, unsigned long val1,
unsigned long val2, unsigned long val3,
unsigned long val4)
{
ia64_native_set_rr0_to_rr4(val0, val1, val2, val3, val4);
}
#define CASE_GET_REG(id) \
case _IA64_REG_ ## id: \
res = ia64_native_getreg(_IA64_REG_ ## id); \
break;
#define CASE_GET_AR(id) CASE_GET_REG(AR_ ## id)
#define CASE_GET_CR(id) CASE_GET_REG(CR_ ## id)
unsigned long
ia64_native_getreg_func(int regnum)
{
unsigned long res = -1;
switch (regnum) {
CASE_GET_REG(GP);
/*CASE_GET_REG(IP);*/ /* returned ip value shouldn't be constant */
CASE_GET_REG(PSR);
CASE_GET_REG(TP);
CASE_GET_REG(SP);
CASE_GET_AR(KR0);
CASE_GET_AR(KR1);
CASE_GET_AR(KR2);
CASE_GET_AR(KR3);
CASE_GET_AR(KR4);
CASE_GET_AR(KR5);
CASE_GET_AR(KR6);
CASE_GET_AR(KR7);
CASE_GET_AR(RSC);
CASE_GET_AR(BSP);
CASE_GET_AR(BSPSTORE);
CASE_GET_AR(RNAT);
CASE_GET_AR(FCR);
CASE_GET_AR(EFLAG);
CASE_GET_AR(CSD);
CASE_GET_AR(SSD);
CASE_GET_AR(CFLAG);
CASE_GET_AR(FSR);
CASE_GET_AR(FIR);
CASE_GET_AR(FDR);
CASE_GET_AR(CCV);
CASE_GET_AR(UNAT);
CASE_GET_AR(FPSR);
CASE_GET_AR(ITC);
CASE_GET_AR(PFS);
CASE_GET_AR(LC);
CASE_GET_AR(EC);
CASE_GET_CR(DCR);
CASE_GET_CR(ITM);
CASE_GET_CR(IVA);
CASE_GET_CR(PTA);
CASE_GET_CR(IPSR);
CASE_GET_CR(ISR);
CASE_GET_CR(IIP);
CASE_GET_CR(IFA);
CASE_GET_CR(ITIR);
CASE_GET_CR(IIPA);
CASE_GET_CR(IFS);
CASE_GET_CR(IIM);
CASE_GET_CR(IHA);
CASE_GET_CR(LID);
CASE_GET_CR(IVR);
CASE_GET_CR(TPR);
CASE_GET_CR(EOI);
CASE_GET_CR(IRR0);
CASE_GET_CR(IRR1);
CASE_GET_CR(IRR2);
CASE_GET_CR(IRR3);
CASE_GET_CR(ITV);
CASE_GET_CR(PMV);
CASE_GET_CR(CMCV);
CASE_GET_CR(LRR0);
CASE_GET_CR(LRR1);
default:
printk(KERN_CRIT "wrong_getreg %d\n", regnum);
break;
}
return res;
}
#define CASE_SET_REG(id) \
case _IA64_REG_ ## id: \
ia64_native_setreg(_IA64_REG_ ## id, val); \
break;
#define CASE_SET_AR(id) CASE_SET_REG(AR_ ## id)
#define CASE_SET_CR(id) CASE_SET_REG(CR_ ## id)
void
ia64_native_setreg_func(int regnum, unsigned long val)
{
switch (regnum) {
case _IA64_REG_PSR_L:
ia64_native_setreg(_IA64_REG_PSR_L, val);
ia64_dv_serialize_data();
break;
CASE_SET_REG(SP);
CASE_SET_REG(GP);
CASE_SET_AR(KR0);
CASE_SET_AR(KR1);
CASE_SET_AR(KR2);
CASE_SET_AR(KR3);
CASE_SET_AR(KR4);
CASE_SET_AR(KR5);
CASE_SET_AR(KR6);
CASE_SET_AR(KR7);
CASE_SET_AR(RSC);
CASE_SET_AR(BSP);
CASE_SET_AR(BSPSTORE);
CASE_SET_AR(RNAT);
CASE_SET_AR(FCR);
CASE_SET_AR(EFLAG);
CASE_SET_AR(CSD);
CASE_SET_AR(SSD);
CASE_SET_AR(CFLAG);
CASE_SET_AR(FSR);
CASE_SET_AR(FIR);
CASE_SET_AR(FDR);
CASE_SET_AR(CCV);
CASE_SET_AR(UNAT);
CASE_SET_AR(FPSR);
CASE_SET_AR(ITC);
CASE_SET_AR(PFS);
CASE_SET_AR(LC);
CASE_SET_AR(EC);
CASE_SET_CR(DCR);
CASE_SET_CR(ITM);
CASE_SET_CR(IVA);
CASE_SET_CR(PTA);
CASE_SET_CR(IPSR);
CASE_SET_CR(ISR);
CASE_SET_CR(IIP);
CASE_SET_CR(IFA);
CASE_SET_CR(ITIR);
CASE_SET_CR(IIPA);
CASE_SET_CR(IFS);
CASE_SET_CR(IIM);
CASE_SET_CR(IHA);
CASE_SET_CR(LID);
CASE_SET_CR(IVR);
CASE_SET_CR(TPR);
CASE_SET_CR(EOI);
CASE_SET_CR(IRR0);
CASE_SET_CR(IRR1);
CASE_SET_CR(IRR2);
CASE_SET_CR(IRR3);
CASE_SET_CR(ITV);
CASE_SET_CR(PMV);
CASE_SET_CR(CMCV);
CASE_SET_CR(LRR0);
CASE_SET_CR(LRR1);
default:
printk(KERN_CRIT "wrong setreg %d\n", regnum);
break;
}
}
#else
#define __DEFINE_FUNC(name, code) \
extern const char ia64_native_ ## name ## _direct_start[]; \
extern const char ia64_native_ ## name ## _direct_end[]; \
asm (".align 32\n" \
".proc ia64_native_" #name "_func\n" \
"ia64_native_" #name "_func:\n" \
"ia64_native_" #name "_direct_start:\n" \
code \
"ia64_native_" #name "_direct_end:\n" \
"br.cond.sptk.many b6\n" \
".endp ia64_native_" #name "_func\n")
#define DEFINE_VOID_FUNC0(name, code) \
extern void \
ia64_native_ ## name ## _func(void); \
__DEFINE_FUNC(name, code)
#define DEFINE_VOID_FUNC1(name, code) \
extern void \
ia64_native_ ## name ## _func(unsigned long arg); \
__DEFINE_FUNC(name, code)
#define DEFINE_VOID_FUNC1_VOID(name, code) \
extern void \
ia64_native_ ## name ## _func(void *arg); \
__DEFINE_FUNC(name, code)
#define DEFINE_VOID_FUNC2(name, code) \
extern void \
ia64_native_ ## name ## _func(unsigned long arg0, \
unsigned long arg1); \
__DEFINE_FUNC(name, code)
#define DEFINE_FUNC0(name, code) \
extern unsigned long \
ia64_native_ ## name ## _func(void); \
__DEFINE_FUNC(name, code)
#define DEFINE_FUNC1(name, type, code) \
extern unsigned long \
ia64_native_ ## name ## _func(type arg); \
__DEFINE_FUNC(name, code)
DEFINE_VOID_FUNC1_VOID(fc,
"fc r8\n");
DEFINE_VOID_FUNC1(intrin_local_irq_restore,
";;\n"
" cmp.ne p6, p7 = r8, r0\n"
";;\n"
"(p6) ssm psr.i\n"
"(p7) rsm psr.i\n"
";;\n"
"(p6) srlz.d\n");
DEFINE_VOID_FUNC2(ptcga,
"ptc.ga r8, r9\n");
DEFINE_VOID_FUNC2(set_rr,
"mov rr[r8] = r9\n");
/* ia64_native_getreg(_IA64_REG_PSR) & IA64_PSR_I */
DEFINE_FUNC0(get_psr_i,
"mov r2 = " __stringify(1 << IA64_PSR_I_BIT) "\n"
"mov r8 = psr\n"
";;\n"
"and r8 = r2, r8\n");
DEFINE_FUNC1(thash, unsigned long,
"thash r8 = r8\n");
DEFINE_FUNC1(get_cpuid, int,
"mov r8 = cpuid[r8]\n");
DEFINE_FUNC1(get_pmd, int,
"mov r8 = pmd[r8]\n");
DEFINE_FUNC1(get_rr, unsigned long,
"mov r8 = rr[r8]\n");
DEFINE_VOID_FUNC0(ssm_i,
"ssm psr.i\n");
DEFINE_VOID_FUNC0(rsm_i,
"rsm psr.i\n");
extern void
ia64_native_set_rr0_to_rr4_func(unsigned long val0, unsigned long val1,
unsigned long val2, unsigned long val3,
unsigned long val4);
__DEFINE_FUNC(set_rr0_to_rr4,
"mov rr[r0] = r8\n"
"movl r2 = 0x2000000000000000\n"
";;\n"
"mov rr[r2] = r9\n"
"shl r3 = r2, 1\n" /* movl r3 = 0x4000000000000000 */
";;\n"
"add r2 = r2, r3\n" /* movl r2 = 0x6000000000000000 */
"mov rr[r3] = r10\n"
";;\n"
"mov rr[r2] = r11\n"
"shl r3 = r3, 1\n" /* movl r3 = 0x8000000000000000 */
";;\n"
"mov rr[r3] = r14\n");
extern unsigned long ia64_native_getreg_func(int regnum);
asm(".global ia64_native_getreg_func\n");
#define __DEFINE_GET_REG(id, reg) \
"mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
";;\n" \
"cmp.eq p6, p0 = r2, r8\n" \
";;\n" \
"(p6) mov r8 = " #reg "\n" \
"(p6) br.cond.sptk.many b6\n" \
";;\n"
#define __DEFINE_GET_AR(id, reg) __DEFINE_GET_REG(AR_ ## id, ar.reg)
#define __DEFINE_GET_CR(id, reg) __DEFINE_GET_REG(CR_ ## id, cr.reg)
__DEFINE_FUNC(getreg,
__DEFINE_GET_REG(GP, gp)
/*__DEFINE_GET_REG(IP, ip)*/ /* returned ip value shouldn't be constant */
__DEFINE_GET_REG(PSR, psr)
__DEFINE_GET_REG(TP, tp)
__DEFINE_GET_REG(SP, sp)
__DEFINE_GET_REG(AR_KR0, ar0)
__DEFINE_GET_REG(AR_KR1, ar1)
__DEFINE_GET_REG(AR_KR2, ar2)
__DEFINE_GET_REG(AR_KR3, ar3)
__DEFINE_GET_REG(AR_KR4, ar4)
__DEFINE_GET_REG(AR_KR5, ar5)
__DEFINE_GET_REG(AR_KR6, ar6)
__DEFINE_GET_REG(AR_KR7, ar7)
__DEFINE_GET_AR(RSC, rsc)
__DEFINE_GET_AR(BSP, bsp)
__DEFINE_GET_AR(BSPSTORE, bspstore)
__DEFINE_GET_AR(RNAT, rnat)
__DEFINE_GET_AR(FCR, fcr)
__DEFINE_GET_AR(EFLAG, eflag)
__DEFINE_GET_AR(CSD, csd)
__DEFINE_GET_AR(SSD, ssd)
__DEFINE_GET_REG(AR_CFLAG, ar27)
__DEFINE_GET_AR(FSR, fsr)
__DEFINE_GET_AR(FIR, fir)
__DEFINE_GET_AR(FDR, fdr)
__DEFINE_GET_AR(CCV, ccv)
__DEFINE_GET_AR(UNAT, unat)
__DEFINE_GET_AR(FPSR, fpsr)
__DEFINE_GET_AR(ITC, itc)
__DEFINE_GET_AR(PFS, pfs)
__DEFINE_GET_AR(LC, lc)
__DEFINE_GET_AR(EC, ec)
__DEFINE_GET_CR(DCR, dcr)
__DEFINE_GET_CR(ITM, itm)
__DEFINE_GET_CR(IVA, iva)
__DEFINE_GET_CR(PTA, pta)
__DEFINE_GET_CR(IPSR, ipsr)
__DEFINE_GET_CR(ISR, isr)
__DEFINE_GET_CR(IIP, iip)
__DEFINE_GET_CR(IFA, ifa)
__DEFINE_GET_CR(ITIR, itir)
__DEFINE_GET_CR(IIPA, iipa)
__DEFINE_GET_CR(IFS, ifs)
__DEFINE_GET_CR(IIM, iim)
__DEFINE_GET_CR(IHA, iha)
__DEFINE_GET_CR(LID, lid)
__DEFINE_GET_CR(IVR, ivr)
__DEFINE_GET_CR(TPR, tpr)
__DEFINE_GET_CR(EOI, eoi)
__DEFINE_GET_CR(IRR0, irr0)
__DEFINE_GET_CR(IRR1, irr1)
__DEFINE_GET_CR(IRR2, irr2)
__DEFINE_GET_CR(IRR3, irr3)
__DEFINE_GET_CR(ITV, itv)
__DEFINE_GET_CR(PMV, pmv)
__DEFINE_GET_CR(CMCV, cmcv)
__DEFINE_GET_CR(LRR0, lrr0)
__DEFINE_GET_CR(LRR1, lrr1)
"mov r8 = -1\n" /* unsupported case */
);
extern void ia64_native_setreg_func(int regnum, unsigned long val);
asm(".global ia64_native_setreg_func\n");
#define __DEFINE_SET_REG(id, reg) \
"mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
";;\n" \
"cmp.eq p6, p0 = r2, r9\n" \
";;\n" \
"(p6) mov " #reg " = r8\n" \
"(p6) br.cond.sptk.many b6\n" \
";;\n"
#define __DEFINE_SET_AR(id, reg) __DEFINE_SET_REG(AR_ ## id, ar.reg)
#define __DEFINE_SET_CR(id, reg) __DEFINE_SET_REG(CR_ ## id, cr.reg)
__DEFINE_FUNC(setreg,
"mov r2 = " __stringify(_IA64_REG_PSR_L) "\n"
";;\n"
"cmp.eq p6, p0 = r2, r9\n"
";;\n"
"(p6) mov psr.l = r8\n"
#ifdef HAVE_SERIALIZE_DIRECTIVE
".serialize.data\n"
#endif
"(p6) br.cond.sptk.many b6\n"
__DEFINE_SET_REG(GP, gp)
__DEFINE_SET_REG(SP, sp)
__DEFINE_SET_REG(AR_KR0, ar0)
__DEFINE_SET_REG(AR_KR1, ar1)
__DEFINE_SET_REG(AR_KR2, ar2)
__DEFINE_SET_REG(AR_KR3, ar3)
__DEFINE_SET_REG(AR_KR4, ar4)
__DEFINE_SET_REG(AR_KR5, ar5)
__DEFINE_SET_REG(AR_KR6, ar6)
__DEFINE_SET_REG(AR_KR7, ar7)
__DEFINE_SET_AR(RSC, rsc)
__DEFINE_SET_AR(BSP, bsp)
__DEFINE_SET_AR(BSPSTORE, bspstore)
__DEFINE_SET_AR(RNAT, rnat)
__DEFINE_SET_AR(FCR, fcr)
__DEFINE_SET_AR(EFLAG, eflag)
__DEFINE_SET_AR(CSD, csd)
__DEFINE_SET_AR(SSD, ssd)
__DEFINE_SET_REG(AR_CFLAG, ar27)
__DEFINE_SET_AR(FSR, fsr)
__DEFINE_SET_AR(FIR, fir)
__DEFINE_SET_AR(FDR, fdr)
__DEFINE_SET_AR(CCV, ccv)
__DEFINE_SET_AR(UNAT, unat)
__DEFINE_SET_AR(FPSR, fpsr)
__DEFINE_SET_AR(ITC, itc)
__DEFINE_SET_AR(PFS, pfs)
__DEFINE_SET_AR(LC, lc)
__DEFINE_SET_AR(EC, ec)
__DEFINE_SET_CR(DCR, dcr)
__DEFINE_SET_CR(ITM, itm)
__DEFINE_SET_CR(IVA, iva)
__DEFINE_SET_CR(PTA, pta)
__DEFINE_SET_CR(IPSR, ipsr)
__DEFINE_SET_CR(ISR, isr)
__DEFINE_SET_CR(IIP, iip)
__DEFINE_SET_CR(IFA, ifa)
__DEFINE_SET_CR(ITIR, itir)
__DEFINE_SET_CR(IIPA, iipa)
__DEFINE_SET_CR(IFS, ifs)
__DEFINE_SET_CR(IIM, iim)
__DEFINE_SET_CR(IHA, iha)
__DEFINE_SET_CR(LID, lid)
__DEFINE_SET_CR(IVR, ivr)
__DEFINE_SET_CR(TPR, tpr)
__DEFINE_SET_CR(EOI, eoi)
__DEFINE_SET_CR(IRR0, irr0)
__DEFINE_SET_CR(IRR1, irr1)
__DEFINE_SET_CR(IRR2, irr2)
__DEFINE_SET_CR(IRR3, irr3)
__DEFINE_SET_CR(ITV, itv)
__DEFINE_SET_CR(PMV, pmv)
__DEFINE_SET_CR(CMCV, cmcv)
__DEFINE_SET_CR(LRR0, lrr0)
__DEFINE_SET_CR(LRR1, lrr1)
);
#endif
struct pv_cpu_ops pv_cpu_ops = {
.fc = ia64_native_fc_func,
.thash = ia64_native_thash_func,
.get_cpuid = ia64_native_get_cpuid_func,
.get_pmd = ia64_native_get_pmd_func,
.ptcga = ia64_native_ptcga_func,
.get_rr = ia64_native_get_rr_func,
.set_rr = ia64_native_set_rr_func,
.set_rr0_to_rr4 = ia64_native_set_rr0_to_rr4_func,
.ssm_i = ia64_native_ssm_i_func,
.getreg = ia64_native_getreg_func,
.setreg = ia64_native_setreg_func,
.rsm_i = ia64_native_rsm_i_func,
.get_psr_i = ia64_native_get_psr_i_func,
.intrin_local_irq_restore
= ia64_native_intrin_local_irq_restore_func,
};
EXPORT_SYMBOL(pv_cpu_ops);
/******************************************************************************
* replacement of hand written assembly codes.
*/
void
paravirt_cpu_asm_init(const struct pv_cpu_asm_switch *cpu_asm_switch)
{
extern unsigned long paravirt_switch_to_targ;
extern unsigned long paravirt_leave_syscall_targ;
extern unsigned long paravirt_work_processed_syscall_targ;
extern unsigned long paravirt_leave_kernel_targ;
paravirt_switch_to_targ = cpu_asm_switch->switch_to;
paravirt_leave_syscall_targ = cpu_asm_switch->leave_syscall;
paravirt_work_processed_syscall_targ =
cpu_asm_switch->work_processed_syscall;
paravirt_leave_kernel_targ = cpu_asm_switch->leave_kernel;
}
/***************************************************************************
* pv_iosapic_ops
* iosapic read/write hooks.
*/
static unsigned int
ia64_native_iosapic_read(char __iomem *iosapic, unsigned int reg)
{
return __ia64_native_iosapic_read(iosapic, reg);
}
static void
ia64_native_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
{
__ia64_native_iosapic_write(iosapic, reg, val);
}
struct pv_iosapic_ops pv_iosapic_ops = {
.pcat_compat_init = ia64_native_iosapic_pcat_compat_init,
.__get_irq_chip = ia64_native_iosapic_get_irq_chip,
.__read = ia64_native_iosapic_read,
.__write = ia64_native_iosapic_write,
};
/***************************************************************************
* pv_irq_ops
* irq operations
*/
struct pv_irq_ops pv_irq_ops = {
.register_ipi = ia64_native_register_ipi,
.assign_irq_vector = ia64_native_assign_irq_vector,
.free_irq_vector = ia64_native_free_irq_vector,
.register_percpu_irq = ia64_native_register_percpu_irq,
.resend_irq = ia64_native_resend_irq,
};
/***************************************************************************
* pv_time_ops
* time operations
*/
struct static_key paravirt_steal_enabled;
struct static_key paravirt_steal_rq_enabled;
static int
ia64_native_do_steal_accounting(unsigned long *new_itm)
{
return 0;
}
struct pv_time_ops pv_time_ops = {
.do_steal_accounting = ia64_native_do_steal_accounting,
.sched_clock = ia64_native_sched_clock,
};
/***************************************************************************
* binary pacthing
* pv_init_ops.patch_bundle
*/
#ifdef ASM_SUPPORTED
#define IA64_NATIVE_PATCH_DEFINE_GET_REG(name, reg) \
__DEFINE_FUNC(get_ ## name, \
";;\n" \
"mov r8 = " #reg "\n" \
";;\n")
#define IA64_NATIVE_PATCH_DEFINE_SET_REG(name, reg) \
__DEFINE_FUNC(set_ ## name, \
";;\n" \
"mov " #reg " = r8\n" \
";;\n")
#define IA64_NATIVE_PATCH_DEFINE_REG(name, reg) \
IA64_NATIVE_PATCH_DEFINE_GET_REG(name, reg); \
IA64_NATIVE_PATCH_DEFINE_SET_REG(name, reg) \
#define IA64_NATIVE_PATCH_DEFINE_AR(name, reg) \
IA64_NATIVE_PATCH_DEFINE_REG(ar_ ## name, ar.reg)
#define IA64_NATIVE_PATCH_DEFINE_CR(name, reg) \
IA64_NATIVE_PATCH_DEFINE_REG(cr_ ## name, cr.reg)
IA64_NATIVE_PATCH_DEFINE_GET_REG(psr, psr);
IA64_NATIVE_PATCH_DEFINE_GET_REG(tp, tp);
/* IA64_NATIVE_PATCH_DEFINE_SET_REG(psr_l, psr.l); */
__DEFINE_FUNC(set_psr_l,
";;\n"
"mov psr.l = r8\n"
#ifdef HAVE_SERIALIZE_DIRECTIVE
".serialize.data\n"
#endif
";;\n");
IA64_NATIVE_PATCH_DEFINE_REG(gp, gp);
IA64_NATIVE_PATCH_DEFINE_REG(sp, sp);
IA64_NATIVE_PATCH_DEFINE_REG(kr0, ar0);
IA64_NATIVE_PATCH_DEFINE_REG(kr1, ar1);
IA64_NATIVE_PATCH_DEFINE_REG(kr2, ar2);
IA64_NATIVE_PATCH_DEFINE_REG(kr3, ar3);
IA64_NATIVE_PATCH_DEFINE_REG(kr4, ar4);
IA64_NATIVE_PATCH_DEFINE_REG(kr5, ar5);
IA64_NATIVE_PATCH_DEFINE_REG(kr6, ar6);
IA64_NATIVE_PATCH_DEFINE_REG(kr7, ar7);
IA64_NATIVE_PATCH_DEFINE_AR(rsc, rsc);
IA64_NATIVE_PATCH_DEFINE_AR(bsp, bsp);
IA64_NATIVE_PATCH_DEFINE_AR(bspstore, bspstore);
IA64_NATIVE_PATCH_DEFINE_AR(rnat, rnat);
IA64_NATIVE_PATCH_DEFINE_AR(fcr, fcr);
IA64_NATIVE_PATCH_DEFINE_AR(eflag, eflag);
IA64_NATIVE_PATCH_DEFINE_AR(csd, csd);
IA64_NATIVE_PATCH_DEFINE_AR(ssd, ssd);
IA64_NATIVE_PATCH_DEFINE_REG(ar27, ar27);
IA64_NATIVE_PATCH_DEFINE_AR(fsr, fsr);
IA64_NATIVE_PATCH_DEFINE_AR(fir, fir);
IA64_NATIVE_PATCH_DEFINE_AR(fdr, fdr);
IA64_NATIVE_PATCH_DEFINE_AR(ccv, ccv);
IA64_NATIVE_PATCH_DEFINE_AR(unat, unat);
IA64_NATIVE_PATCH_DEFINE_AR(fpsr, fpsr);
IA64_NATIVE_PATCH_DEFINE_AR(itc, itc);
IA64_NATIVE_PATCH_DEFINE_AR(pfs, pfs);
IA64_NATIVE_PATCH_DEFINE_AR(lc, lc);
IA64_NATIVE_PATCH_DEFINE_AR(ec, ec);
IA64_NATIVE_PATCH_DEFINE_CR(dcr, dcr);
IA64_NATIVE_PATCH_DEFINE_CR(itm, itm);
IA64_NATIVE_PATCH_DEFINE_CR(iva, iva);
IA64_NATIVE_PATCH_DEFINE_CR(pta, pta);
IA64_NATIVE_PATCH_DEFINE_CR(ipsr, ipsr);
IA64_NATIVE_PATCH_DEFINE_CR(isr, isr);
IA64_NATIVE_PATCH_DEFINE_CR(iip, iip);
IA64_NATIVE_PATCH_DEFINE_CR(ifa, ifa);
IA64_NATIVE_PATCH_DEFINE_CR(itir, itir);
IA64_NATIVE_PATCH_DEFINE_CR(iipa, iipa);
IA64_NATIVE_PATCH_DEFINE_CR(ifs, ifs);
IA64_NATIVE_PATCH_DEFINE_CR(iim, iim);
IA64_NATIVE_PATCH_DEFINE_CR(iha, iha);
IA64_NATIVE_PATCH_DEFINE_CR(lid, lid);
IA64_NATIVE_PATCH_DEFINE_CR(ivr, ivr);
IA64_NATIVE_PATCH_DEFINE_CR(tpr, tpr);
IA64_NATIVE_PATCH_DEFINE_CR(eoi, eoi);
IA64_NATIVE_PATCH_DEFINE_CR(irr0, irr0);
IA64_NATIVE_PATCH_DEFINE_CR(irr1, irr1);
IA64_NATIVE_PATCH_DEFINE_CR(irr2, irr2);
IA64_NATIVE_PATCH_DEFINE_CR(irr3, irr3);
IA64_NATIVE_PATCH_DEFINE_CR(itv, itv);
IA64_NATIVE_PATCH_DEFINE_CR(pmv, pmv);
IA64_NATIVE_PATCH_DEFINE_CR(cmcv, cmcv);
IA64_NATIVE_PATCH_DEFINE_CR(lrr0, lrr0);
IA64_NATIVE_PATCH_DEFINE_CR(lrr1, lrr1);
static const struct paravirt_patch_bundle_elem ia64_native_patch_bundle_elems[]
__initdata_or_module =
{
#define IA64_NATIVE_PATCH_BUNDLE_ELEM(name, type) \
{ \
(void*)ia64_native_ ## name ## _direct_start, \
(void*)ia64_native_ ## name ## _direct_end, \
PARAVIRT_PATCH_TYPE_ ## type, \
}
IA64_NATIVE_PATCH_BUNDLE_ELEM(fc, FC),
IA64_NATIVE_PATCH_BUNDLE_ELEM(thash, THASH),
IA64_NATIVE_PATCH_BUNDLE_ELEM(get_cpuid, GET_CPUID),
IA64_NATIVE_PATCH_BUNDLE_ELEM(get_pmd, GET_PMD),
IA64_NATIVE_PATCH_BUNDLE_ELEM(ptcga, PTCGA),
IA64_NATIVE_PATCH_BUNDLE_ELEM(get_rr, GET_RR),
IA64_NATIVE_PATCH_BUNDLE_ELEM(set_rr, SET_RR),
IA64_NATIVE_PATCH_BUNDLE_ELEM(set_rr0_to_rr4, SET_RR0_TO_RR4),
IA64_NATIVE_PATCH_BUNDLE_ELEM(ssm_i, SSM_I),
IA64_NATIVE_PATCH_BUNDLE_ELEM(rsm_i, RSM_I),
IA64_NATIVE_PATCH_BUNDLE_ELEM(get_psr_i, GET_PSR_I),
IA64_NATIVE_PATCH_BUNDLE_ELEM(intrin_local_irq_restore,
INTRIN_LOCAL_IRQ_RESTORE),
#define IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(name, reg) \
{ \
(void*)ia64_native_get_ ## name ## _direct_start, \
(void*)ia64_native_get_ ## name ## _direct_end, \
PARAVIRT_PATCH_TYPE_GETREG + _IA64_REG_ ## reg, \
}
#define IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
{ \
(void*)ia64_native_set_ ## name ## _direct_start, \
(void*)ia64_native_set_ ## name ## _direct_end, \
PARAVIRT_PATCH_TYPE_SETREG + _IA64_REG_ ## reg, \
}
#define IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(name, reg) \
IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(name, reg), \
IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
#define IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(name, reg) \
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(ar_ ## name, AR_ ## reg)
#define IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(name, reg) \
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(cr_ ## name, CR_ ## reg)
IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(psr, PSR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(tp, TP),
IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(psr_l, PSR_L),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(gp, GP),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(sp, SP),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr0, AR_KR0),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr1, AR_KR1),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr2, AR_KR2),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr3, AR_KR3),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr4, AR_KR4),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr5, AR_KR5),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr6, AR_KR6),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr7, AR_KR7),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(rsc, RSC),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(bsp, BSP),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(bspstore, BSPSTORE),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(rnat, RNAT),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fcr, FCR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(eflag, EFLAG),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(csd, CSD),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ssd, SSD),
IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(ar27, AR_CFLAG),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fsr, FSR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fir, FIR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fdr, FDR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ccv, CCV),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(unat, UNAT),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fpsr, FPSR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(itc, ITC),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(pfs, PFS),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(lc, LC),
IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ec, EC),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(dcr, DCR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itm, ITM),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iva, IVA),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(pta, PTA),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ipsr, IPSR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(isr, ISR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iip, IIP),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ifa, IFA),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itir, ITIR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iipa, IIPA),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ifs, IFS),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iim, IIM),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iha, IHA),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lid, LID),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ivr, IVR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(tpr, TPR),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(eoi, EOI),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr0, IRR0),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr1, IRR1),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr2, IRR2),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr3, IRR3),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itv, ITV),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(pmv, PMV),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(cmcv, CMCV),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lrr0, LRR0),
IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lrr1, LRR1),
};
unsigned long __init_or_module
ia64_native_patch_bundle(void *sbundle, void *ebundle, unsigned long type)
{
const unsigned long nelems = sizeof(ia64_native_patch_bundle_elems) /
sizeof(ia64_native_patch_bundle_elems[0]);
return __paravirt_patch_apply_bundle(sbundle, ebundle, type,
ia64_native_patch_bundle_elems,
nelems, NULL);
}
#endif /* ASM_SUPPOTED */
extern const char ia64_native_switch_to[];
extern const char ia64_native_leave_syscall[];
extern const char ia64_native_work_processed_syscall[];
extern const char ia64_native_leave_kernel[];
const struct paravirt_patch_branch_target ia64_native_branch_target[]
__initconst = {
#define PARAVIRT_BR_TARGET(name, type) \
{ \
ia64_native_ ## name, \
PARAVIRT_PATCH_TYPE_BR_ ## type, \
}
PARAVIRT_BR_TARGET(switch_to, SWITCH_TO),
PARAVIRT_BR_TARGET(leave_syscall, LEAVE_SYSCALL),
PARAVIRT_BR_TARGET(work_processed_syscall, WORK_PROCESSED_SYSCALL),
PARAVIRT_BR_TARGET(leave_kernel, LEAVE_KERNEL),
};
static void __init
ia64_native_patch_branch(unsigned long tag, unsigned long type)
{
const unsigned long nelem =
sizeof(ia64_native_branch_target) /
sizeof(ia64_native_branch_target[0]);
__paravirt_patch_apply_branch(tag, type,
ia64_native_branch_target, nelem);
}
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