diff options
Diffstat (limited to 'arch/x86/kernel/paravirt_patch_64.c')
| -rw-r--r-- | arch/x86/kernel/paravirt_patch_64.c | 97 |
1 files changed, 44 insertions, 53 deletions
diff --git a/arch/x86/kernel/paravirt_patch_64.c b/arch/x86/kernel/paravirt_patch_64.c index 9cb98f7b07c9..7ca9cb726f4d 100644 --- a/arch/x86/kernel/paravirt_patch_64.c +++ b/arch/x86/kernel/paravirt_patch_64.c @@ -3,24 +3,26 @@ #include <asm/asm-offsets.h> #include <linux/stringify.h> -DEF_NATIVE(pv_irq_ops, irq_disable, "cli"); -DEF_NATIVE(pv_irq_ops, irq_enable, "sti"); -DEF_NATIVE(pv_irq_ops, restore_fl, "pushq %rdi; popfq"); -DEF_NATIVE(pv_irq_ops, save_fl, "pushfq; popq %rax"); -DEF_NATIVE(pv_mmu_ops, read_cr2, "movq %cr2, %rax"); -DEF_NATIVE(pv_mmu_ops, read_cr3, "movq %cr3, %rax"); -DEF_NATIVE(pv_mmu_ops, write_cr3, "movq %rdi, %cr3"); -DEF_NATIVE(pv_cpu_ops, wbinvd, "wbinvd"); +#ifdef CONFIG_PARAVIRT_XXL +DEF_NATIVE(irq, irq_disable, "cli"); +DEF_NATIVE(irq, irq_enable, "sti"); +DEF_NATIVE(irq, restore_fl, "pushq %rdi; popfq"); +DEF_NATIVE(irq, save_fl, "pushfq; popq %rax"); +DEF_NATIVE(mmu, read_cr2, "movq %cr2, %rax"); +DEF_NATIVE(mmu, read_cr3, "movq %cr3, %rax"); +DEF_NATIVE(mmu, write_cr3, "movq %rdi, %cr3"); +DEF_NATIVE(cpu, wbinvd, "wbinvd"); -DEF_NATIVE(pv_cpu_ops, usergs_sysret64, "swapgs; sysretq"); -DEF_NATIVE(pv_cpu_ops, swapgs, "swapgs"); +DEF_NATIVE(cpu, usergs_sysret64, "swapgs; sysretq"); +DEF_NATIVE(cpu, swapgs, "swapgs"); +#endif DEF_NATIVE(, mov32, "mov %edi, %eax"); DEF_NATIVE(, mov64, "mov %rdi, %rax"); #if defined(CONFIG_PARAVIRT_SPINLOCKS) -DEF_NATIVE(pv_lock_ops, queued_spin_unlock, "movb $0, (%rdi)"); -DEF_NATIVE(pv_lock_ops, vcpu_is_preempted, "xor %eax, %eax"); +DEF_NATIVE(lock, queued_spin_unlock, "movb $0, (%rdi)"); +DEF_NATIVE(lock, vcpu_is_preempted, "xor %eax, %eax"); #endif unsigned paravirt_patch_ident_32(void *insnbuf, unsigned len) @@ -38,55 +40,44 @@ unsigned paravirt_patch_ident_64(void *insnbuf, unsigned len) extern bool pv_is_native_spin_unlock(void); extern bool pv_is_native_vcpu_is_preempted(void); -unsigned native_patch(u8 type, u16 clobbers, void *ibuf, - unsigned long addr, unsigned len) +unsigned native_patch(u8 type, void *ibuf, unsigned long addr, unsigned len) { - const unsigned char *start, *end; - unsigned ret; - #define PATCH_SITE(ops, x) \ - case PARAVIRT_PATCH(ops.x): \ - start = start_##ops##_##x; \ - end = end_##ops##_##x; \ - goto patch_site - switch(type) { - PATCH_SITE(pv_irq_ops, restore_fl); - PATCH_SITE(pv_irq_ops, save_fl); - PATCH_SITE(pv_irq_ops, irq_enable); - PATCH_SITE(pv_irq_ops, irq_disable); - PATCH_SITE(pv_cpu_ops, usergs_sysret64); - PATCH_SITE(pv_cpu_ops, swapgs); - PATCH_SITE(pv_mmu_ops, read_cr2); - PATCH_SITE(pv_mmu_ops, read_cr3); - PATCH_SITE(pv_mmu_ops, write_cr3); - PATCH_SITE(pv_cpu_ops, wbinvd); -#if defined(CONFIG_PARAVIRT_SPINLOCKS) - case PARAVIRT_PATCH(pv_lock_ops.queued_spin_unlock): - if (pv_is_native_spin_unlock()) { - start = start_pv_lock_ops_queued_spin_unlock; - end = end_pv_lock_ops_queued_spin_unlock; - goto patch_site; - } - goto patch_default; + case PARAVIRT_PATCH(ops.x): \ + return paravirt_patch_insns(ibuf, len, start_##ops##_##x, end_##ops##_##x) - case PARAVIRT_PATCH(pv_lock_ops.vcpu_is_preempted): - if (pv_is_native_vcpu_is_preempted()) { - start = start_pv_lock_ops_vcpu_is_preempted; - end = end_pv_lock_ops_vcpu_is_preempted; - goto patch_site; - } - goto patch_default; + switch (type) { +#ifdef CONFIG_PARAVIRT_XXL + PATCH_SITE(irq, restore_fl); + PATCH_SITE(irq, save_fl); + PATCH_SITE(irq, irq_enable); + PATCH_SITE(irq, irq_disable); + PATCH_SITE(cpu, usergs_sysret64); + PATCH_SITE(cpu, swapgs); + PATCH_SITE(cpu, wbinvd); + PATCH_SITE(mmu, read_cr2); + PATCH_SITE(mmu, read_cr3); + PATCH_SITE(mmu, write_cr3); #endif +#if defined(CONFIG_PARAVIRT_SPINLOCKS) + case PARAVIRT_PATCH(lock.queued_spin_unlock): + if (pv_is_native_spin_unlock()) + return paravirt_patch_insns(ibuf, len, + start_lock_queued_spin_unlock, + end_lock_queued_spin_unlock); + break; - default: -patch_default: __maybe_unused - ret = paravirt_patch_default(type, clobbers, ibuf, addr, len); + case PARAVIRT_PATCH(lock.vcpu_is_preempted): + if (pv_is_native_vcpu_is_preempted()) + return paravirt_patch_insns(ibuf, len, + start_lock_vcpu_is_preempted, + end_lock_vcpu_is_preempted); break; +#endif -patch_site: - ret = paravirt_patch_insns(ibuf, len, start, end); + default: break; } #undef PATCH_SITE - return ret; + return paravirt_patch_default(type, ibuf, addr, len); } |