x86/paravirt: Use a single ops structure

Instead of using six globally visible paravirt ops structures combine
them in a single structure, keeping the original structures as
sub-structures.

This avoids the need to assemble struct paravirt_patch_template at
runtime on the stack each time apply_paravirt() is being called (i.e.
when loading a module).

[ tglx: Made the struct and the initializer tabular for readability sake ]

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: xen-devel@lists.xenproject.org
Cc: virtualization@lists.linux-foundation.org
Cc: akataria@vmware.com
Cc: rusty@rustcorp.com.au
Cc: boris.ostrovsky@oracle.com
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/20180828074026.820-9-jgross@suse.com

1 files changed, 28 insertions, 28 deletions

diff --git a/arch/x86/kernel/paravirt_patch_64.c b/arch/x86/kernel/paravirt_patch_64.c
index 835f1985a115..582e893728e8 100644
--- a/arch/x86/kernel/paravirt_patch_64.c
+++ b/arch/x86/kernel/paravirt_patch_64.c
@@ -3,24 +3,24 @@
 #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");
+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");
 
 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)
@@ -49,29 +49,29 @@ unsigned native_patch(u8 type, void *ibuf, unsigned long addr, unsigned len)
 			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);
+		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(mmu, read_cr2);
+		PATCH_SITE(mmu, read_cr3);
+		PATCH_SITE(mmu, write_cr3);
+		PATCH_SITE(cpu, wbinvd);
 #if defined(CONFIG_PARAVIRT_SPINLOCKS)
-		case PARAVIRT_PATCH(pv_lock_ops.queued_spin_unlock):
+		case PARAVIRT_PATCH(lock.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;
+				start = start_lock_queued_spin_unlock;
+				end   = end_lock_queued_spin_unlock;
 				goto patch_site;
 			}
 			goto patch_default;
 
-		case PARAVIRT_PATCH(pv_lock_ops.vcpu_is_preempted):
+		case PARAVIRT_PATCH(lock.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;
+				start = start_lock_vcpu_is_preempted;
+				end   = end_lock_vcpu_is_preempted;
 				goto patch_site;
 			}
 			goto patch_default;