search for: xen_restore_fl_direct

...reloc=v #define ENDPATCH(x) .globl x##_end; x##_end=. + +/* Pseudo-flag used for virtual NMI, which we don't implement yet */ +#define XEN_EFLAGS_NMI 0x80000000 /* Enable events. This clears the event mask and tests the pending @@ -81,13 +87,12 @@ ENDPATCH(xen_save_fl_direct) */ ENTRY(xen_restore_fl_direct) testb $X86_EFLAGS_IF>>8, %ah - setz %al - movb %al, PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask + setz PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask /* Preempt here doesn't matter because that will deal with any pending interrupts. The pending check may end up being run...

...reloc=v #define ENDPATCH(x) .globl x##_end; x##_end=. + +/* Pseudo-flag used for virtual NMI, which we don't implement yet */ +#define XEN_EFLAGS_NMI 0x80000000 /* Enable events. This clears the event mask and tests the pending @@ -81,13 +87,12 @@ ENDPATCH(xen_save_fl_direct) */ ENTRY(xen_restore_fl_direct) testb $X86_EFLAGS_IF>>8, %ah - setz %al - movb %al, PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask + setz PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask /* Preempt here doesn't matter because that will deal with any pending interrupts. The pending check may end up being run...

...reloc=v #define ENDPATCH(x) .globl x##_end; x##_end=. + +/* Pseudo-flag used for virtual NMI, which we don't implement yet */ +#define XEN_EFLAGS_NMI 0x80000000 /* Enable events. This clears the event mask and tests the pending @@ -81,13 +87,12 @@ ENDPATCH(xen_save_fl_direct) */ ENTRY(xen_restore_fl_direct) testb $X86_EFLAGS_IF>>8, %ah - setz %al - movb %al, PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask + setz PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask /* Preempt here doesn't matter because that will deal with any pending interrupts. The pending check may end up being run...

...reloc=v #define ENDPATCH(x) .globl x##_end; x##_end=. + +/* Pseudo-flag used for virtual NMI, which we don't implement yet */ +#define XEN_EFLAGS_NMI 0x80000000 /* Enable events. This clears the event mask and tests the pending @@ -81,13 +87,12 @@ ENDPATCH(xen_save_fl_direct) */ ENTRY(xen_restore_fl_direct) testb $X86_EFLAGS_IF>>8, %ah - setz %al - movb %al, PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask + setz PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask /* Preempt here doesn't matter because that will deal with any pending interrupts. The pending check may end up being run...

...reloc=v #define ENDPATCH(x) .globl x##_end; x##_end=. + +/* Pseudo-flag used for virtual NMI, which we don't implement yet */ +#define XEN_EFLAGS_NMI 0x80000000 /* Enable events. This clears the event mask and tests the pending @@ -81,13 +87,12 @@ ENDPATCH(xen_save_fl_direct) */ ENTRY(xen_restore_fl_direct) testb $X86_EFLAGS_IF>>8, %ah - setz %al - movb %al, PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask + setz PER_CPU_VAR(xen_vcpu_info)+XEN_vcpu_info_mask /* Preempt here doesn't matter because that will deal with any pending interrupts. The pending check may end up being run...

...64 has directly accessible percpu variables, it can also implement the direct versions of these operations, which operate on a vcpu_info structure directly embedded in the percpu area. In fact, the 64-bit versions are more or less identical, and so can be shared. The only two differences are: 1. xen_restore_fl_direct takes its argument in eax on 32-bit, and rdi on 64-bit. Unfortunately it isn''t possible to directly refer to the 2nd lsb of rdi directly (as you can with %ah), so the code isn''t quite as dense. 2. check_events needs to variants to save different registers. Signed-off-by:...

...orl $X86_EFLAGS_IF, PT_EFLAGS(%esp) - lea PT_EIP(%esp), %esp - - jmp xen_iret -ENDPROC(xen_sysexit) - -/* * This is run where a normal iret would be run, with the same stack setup: * 8: eflags * 4: cs --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -139,9 +139,6 @@ DECL_ASM(void, xen_restore_fl_direct, un /* These are not functions, and cannot be called normally */ __visible void xen_iret(void); -#ifdef CONFIG_X86_32 -__visible void xen_sysexit(void); -#endif __visible void xen_sysret32(void); __visible void xen_sysret64(void); __visible void xen_adjust_exception_frame(void);

...sysexit) - -/* * This is run where a normal iret would be run, with the same stack setup: * 8: eflags * 4: cs diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h index 1399423..4140b07 100644 --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -139,9 +139,6 @@ DECL_ASM(void, xen_restore_fl_direct, unsigned long); /* These are not functions, and cannot be called normally */ __visible void xen_iret(void); -#ifdef CONFIG_X86_32 -__visible void xen_sysexit(void); -#endif __visible void xen_sysret32(void); __visible void xen_sysret64(void); __visible void xen_adjust_exception_frame(void);...

...orl $X86_EFLAGS_IF, PT_EFLAGS(%esp) - lea PT_EIP(%esp), %esp - - jmp xen_iret -ENDPROC(xen_sysexit) - -/* * This is run where a normal iret would be run, with the same stack setup: * 8: eflags * 4: cs --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -139,9 +139,6 @@ DECL_ASM(void, xen_restore_fl_direct, un /* These are not functions, and cannot be called normally */ __visible void xen_iret(void); -#ifdef CONFIG_X86_32 -__visible void xen_sysexit(void); -#endif __visible void xen_sysret32(void); __visible void xen_sysret64(void); __visible void xen_adjust_exception_frame(void); Patches cu...

...h/x86/xen/enlighten_pv.c @@ -998,11 +998,15 @@ void __ref xen_setup_vcpu_info_placement(void) * percpu area for all cpus, so make use of it. */ if (xen_have_vcpu_info_placement) { - pv_irq_ops.save_fl = __PV_IS_CALLEE_SAVE(xen_save_fl_direct); - pv_irq_ops.restore_fl = __PV_IS_CALLEE_SAVE(xen_restore_fl_direct); - pv_irq_ops.irq_disable = __PV_IS_CALLEE_SAVE(xen_irq_disable_direct); - pv_irq_ops.irq_enable = __PV_IS_CALLEE_SAVE(xen_irq_enable_direct); - pv_mmu_ops.read_cr2 = xen_read_cr2_direct; + pv_ops.pv_irq_ops.save_fl = + __PV_IS_CALLEE_SAVE(xen_save_fl_direct); + pv_ops.pv_irq_ops.restore_fl...

The first patch fixes Xen PV regression introduced by 32-bit rewrite. Unlike the earlier version it uses ALTERNATIVE instruction and avoids using xen_sysexit (and sysret32 in compat mode) pv ops, as suggested by Andy. (I ended up patching TEST with XOR to avoid extra NOPs, even though I said yesterday it would be wrong. It's not wrong) As result of this patch irq_enable_sysexit and

The first patch fixes Xen PV regression introduced by 32-bit rewrite. Unlike the earlier version it uses ALTERNATIVE instruction and avoids using xen_sysexit (and sysret32 in compat mode) pv ops, as suggested by Andy. (I ended up patching TEST with XOR to avoid extra NOPs, even though I said yesterday it would be wrong. It's not wrong) As result of this patch irq_enable_sysexit and

...if (!xen_feature(XENFEAT_auto_translated_physmap)) { /* @@ -832,12 +832,12 @@ void __init xen_setup_vcpu_info_placemen if (have_vcpu_info_placement) { printk(KERN_INFO "Xen: using vcpu_info placement\n"); - paravirt_ops.save_fl = xen_save_fl_direct; - paravirt_ops.restore_fl = xen_restore_fl_direct; - paravirt_ops.irq_disable = xen_irq_disable_direct; - paravirt_ops.irq_enable = xen_irq_enable_direct; - paravirt_ops.read_cr2 = xen_read_cr2_direct; - paravirt_ops.iret = xen_iret_direct; + pv_irq_ops.save_fl = xen_save_fl_direct; + pv_irq_ops.restore_fl = xen_restore_fl_direct; + pv_irq_...

...if (!xen_feature(XENFEAT_auto_translated_physmap)) { /* @@ -832,12 +832,12 @@ void __init xen_setup_vcpu_info_placemen if (have_vcpu_info_placement) { printk(KERN_INFO "Xen: using vcpu_info placement\n"); - paravirt_ops.save_fl = xen_save_fl_direct; - paravirt_ops.restore_fl = xen_restore_fl_direct; - paravirt_ops.irq_disable = xen_irq_disable_direct; - paravirt_ops.irq_enable = xen_irq_enable_direct; - paravirt_ops.read_cr2 = xen_read_cr2_direct; - paravirt_ops.iret = xen_iret_direct; + pv_irq_ops.save_fl = xen_save_fl_direct; + pv_irq_ops.restore_fl = xen_restore_fl_direct; + pv_irq_...

The first patch fixes Xen PV regression introduced by 32-bit rewrite. Unlike the earlier version it uses ALTERNATIVE instruction and avoids using xen_sysexit (and sysret32 in compat mode) pv ops, as suggested by Andy. As result of this patch irq_enable_sysexit and usergs_sysret32 pv ops are not used anymore by anyone and so can be removed. v2: * patch both TEST and JZ intructions with a

The first patch fixes Xen PV regression introduced by 32-bit rewrite. Unlike the earlier version it uses ALTERNATIVE instruction and avoids using xen_sysexit (and sysret32 in compat mode) pv ops, as suggested by Andy. As result of this patch irq_enable_sysexit and usergs_sysret32 pv ops are not used anymore by anyone and so can be removed. v2: * patch both TEST and JZ intructions with a

...if (!xen_feature(XENFEAT_auto_translated_physmap)) { /* @@ -832,12 +832,12 @@ void __init xen_setup_vcpu_info_placemen if (have_vcpu_info_placement) { printk(KERN_INFO "Xen: using vcpu_info placement\n"); - paravirt_ops.save_fl = xen_save_fl_direct; - paravirt_ops.restore_fl = xen_restore_fl_direct; - paravirt_ops.irq_disable = xen_irq_disable_direct; - paravirt_ops.irq_enable = xen_irq_enable_direct; - paravirt_ops.read_cr2 = xen_read_cr2_direct; - paravirt_ops.iret = xen_iret_direct; + pv_irq_ops.save_fl = xen_save_fl_direct; + pv_irq_ops.restore_fl = xen_restore_fl_direct; + pv_irq_...

...if (!xen_feature(XENFEAT_auto_translated_physmap)) { /* @@ -832,12 +832,12 @@ void __init xen_setup_vcpu_info_placemen if (have_vcpu_info_placement) { printk(KERN_INFO "Xen: using vcpu_info placement\n"); - paravirt_ops.save_fl = xen_save_fl_direct; - paravirt_ops.restore_fl = xen_restore_fl_direct; - paravirt_ops.irq_disable = xen_irq_disable_direct; - paravirt_ops.irq_enable = xen_irq_enable_direct; - paravirt_ops.read_cr2 = xen_read_cr2_direct; - paravirt_ops.iret = xen_iret_direct; + pv_irq_ops.save_fl = xen_save_fl_direct; + pv_irq_ops.restore_fl = xen_restore_fl_direct; + pv_irq_...

...if (!xen_feature(XENFEAT_auto_translated_physmap)) { /* @@ -842,12 +842,12 @@ void __init xen_setup_vcpu_info_placemen if (have_vcpu_info_placement) { printk(KERN_INFO "Xen: using vcpu_info placement\n"); - paravirt_ops.save_fl = xen_save_fl_direct; - paravirt_ops.restore_fl = xen_restore_fl_direct; - paravirt_ops.irq_disable = xen_irq_disable_direct; - paravirt_ops.irq_enable = xen_irq_enable_direct; - paravirt_ops.read_cr2 = xen_read_cr2_direct; - paravirt_ops.iret = xen_iret_direct; + pv_irq_ops.save_fl = xen_save_fl_direct; + pv_irq_ops.restore_fl = xen_restore_fl_direct; + pv_irq_...

...if (!xen_feature(XENFEAT_auto_translated_physmap)) { /* @@ -842,12 +842,12 @@ void __init xen_setup_vcpu_info_placemen if (have_vcpu_info_placement) { printk(KERN_INFO "Xen: using vcpu_info placement\n"); - paravirt_ops.save_fl = xen_save_fl_direct; - paravirt_ops.restore_fl = xen_restore_fl_direct; - paravirt_ops.irq_disable = xen_irq_disable_direct; - paravirt_ops.irq_enable = xen_irq_enable_direct; - paravirt_ops.read_cr2 = xen_read_cr2_direct; - paravirt_ops.iret = xen_iret_direct; + pv_irq_ops.save_fl = xen_save_fl_direct; + pv_irq_ops.restore_fl = xen_restore_fl_direct; + pv_irq_...