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Merge branch 'x86-asmlinkage-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 asmlinkage (LTO) changes from Peter Anvin:
 "This patchset adds more infrastructure for link time optimization
  (LTO).

  This patchset was pulled into my tree late because of a
  miscommunication (part of the patchset was picked up by other
  maintainers).  However, the patchset is strictly build-related and
  seems to be okay in testing"

* 'x86-asmlinkage-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, asmlinkage, xen: Fix type of NMI
  x86, asmlinkage, xen, kvm: Make {xen,kvm}_lock_spinning global and visible
  x86: Use inline assembler instead of global register variable to get sp
  x86, asmlinkage, paravirt: Make paravirt thunks global
  x86, asmlinkage, paravirt: Don't rely on local assembler labels
  x86, asmlinkage, lguest: Fix C functions used by inline assembler
This commit is contained in:
Linus Torvalds
2014-01-30 18:15:32 -08:00
parent 10ffe3dbf7 07ba06d9d2
commit 12f2bbd609
10 changed files with 37 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/xen/irq.c
View File

@@ -23,7 +23,7 @@ void xen_force_evtchn_callback(void)
(void)HYPERVISOR_xen_version(0, NULL);
}
static unsigned long xen_save_fl(void)
asmlinkage unsigned long xen_save_fl(void)
{
struct vcpu_info *vcpu;
unsigned long flags;
@@ -41,7 +41,7 @@ static unsigned long xen_save_fl(void)
}
PV_CALLEE_SAVE_REGS_THUNK(xen_save_fl);
static void xen_restore_fl(unsigned long flags)
__visible void xen_restore_fl(unsigned long flags)
{
struct vcpu_info *vcpu;
@@ -63,7 +63,7 @@ static void xen_restore_fl(unsigned long flags)
}
PV_CALLEE_SAVE_REGS_THUNK(xen_restore_fl);
static void xen_irq_disable(void)
asmlinkage void xen_irq_disable(void)
{
/* There's a one instruction preempt window here. We need to
make sure we're don't switch CPUs between getting the vcpu
@@ -74,7 +74,7 @@ static void xen_irq_disable(void)
}
PV_CALLEE_SAVE_REGS_THUNK(xen_irq_disable);
static void xen_irq_enable(void)
asmlinkage void xen_irq_enable(void)
{
struct vcpu_info *vcpu;

16
arch/x86/xen/mmu.c
View File

@@ -431,7 +431,7 @@ static pteval_t iomap_pte(pteval_t val)
return val;
}
static pteval_t xen_pte_val(pte_t pte)
__visible pteval_t xen_pte_val(pte_t pte)
{
pteval_t pteval = pte.pte;
#if 0
@@ -448,7 +448,7 @@ static pteval_t xen_pte_val(pte_t pte)
}
PV_CALLEE_SAVE_REGS_THUNK(xen_pte_val);
static pgdval_t xen_pgd_val(pgd_t pgd)
__visible pgdval_t xen_pgd_val(pgd_t pgd)
{
return pte_mfn_to_pfn(pgd.pgd);
}
@@ -479,7 +479,7 @@ void xen_set_pat(u64 pat)
WARN_ON(pat != 0x0007010600070106ull);
}
static pte_t xen_make_pte(pteval_t pte)
__visible pte_t xen_make_pte(pteval_t pte)
{
phys_addr_t addr = (pte & PTE_PFN_MASK);
#if 0
@@ -514,14 +514,14 @@ static pte_t xen_make_pte(pteval_t pte)
}
PV_CALLEE_SAVE_REGS_THUNK(xen_make_pte);
static pgd_t xen_make_pgd(pgdval_t pgd)
__visible pgd_t xen_make_pgd(pgdval_t pgd)
{
pgd = pte_pfn_to_mfn(pgd);
return native_make_pgd(pgd);
}
PV_CALLEE_SAVE_REGS_THUNK(xen_make_pgd);
static pmdval_t xen_pmd_val(pmd_t pmd)
__visible pmdval_t xen_pmd_val(pmd_t pmd)
{
return pte_mfn_to_pfn(pmd.pmd);
}
@@ -580,7 +580,7 @@ static void xen_pmd_clear(pmd_t *pmdp)
}
#endif /* CONFIG_X86_PAE */
static pmd_t xen_make_pmd(pmdval_t pmd)
__visible pmd_t xen_make_pmd(pmdval_t pmd)
{
pmd = pte_pfn_to_mfn(pmd);
return native_make_pmd(pmd);
@@ -588,13 +588,13 @@ static pmd_t xen_make_pmd(pmdval_t pmd)
PV_CALLEE_SAVE_REGS_THUNK(xen_make_pmd);
#if PAGETABLE_LEVELS == 4
static pudval_t xen_pud_val(pud_t pud)
__visible pudval_t xen_pud_val(pud_t pud)
{
return pte_mfn_to_pfn(pud.pud);
}
PV_CALLEE_SAVE_REGS_THUNK(xen_pud_val);
static pud_t xen_make_pud(pudval_t pud)
__visible pud_t xen_make_pud(pudval_t pud)
{
pud = pte_pfn_to_mfn(pud);

4
arch/x86/xen/setup.c
View File

@@ -35,7 +35,7 @@
extern const char xen_hypervisor_callback[];
extern const char xen_failsafe_callback[];
#ifdef CONFIG_X86_64
extern const char nmi[];
extern asmlinkage void nmi(void);
#endif
extern void xen_sysenter_target(void);
extern void xen_syscall_target(void);
@@ -577,7 +577,7 @@ void xen_enable_syscall(void)
void xen_enable_nmi(void)
{
#ifdef CONFIG_X86_64
if (register_callback(CALLBACKTYPE_nmi, nmi))
if (register_callback(CALLBACKTYPE_nmi, (char *)nmi))
BUG();
#endif
}

2
arch/x86/xen/spinlock.c
View File

@@ -106,7 +106,7 @@ static DEFINE_PER_CPU(struct xen_lock_waiting, lock_waiting);
static cpumask_t waiting_cpus;
static bool xen_pvspin = true;
static void xen_lock_spinning(struct arch_spinlock *lock, __ticket_t want)
__visible void xen_lock_spinning(struct arch_spinlock *lock, __ticket_t want)
{
int irq = __this_cpu_read(lock_kicker_irq);
struct xen_lock_waiting *w = &__get_cpu_var(lock_waiting);