x86: rename the struct pt_regs members for 32/64-bit consistency

We have a lot of code which differs only by the naming of specific
members of structures that contain registers.  In order to enable
additional unifications, this patch drops the e- or r- size prefix
from the register names in struct pt_regs, and drops the x- prefixes
for segment registers on the 32-bit side.

This patch also performs the equivalent renames in some additional
places that might be candidates for unification in the future.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 10 insertions, 10 deletions

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index d3574485cb15..29517faaa735 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -141,8 +141,8 @@ static void __init xen_banner(void)
         printk(KERN_INFO "Hypervisor signature: %s\n", xen_start_info->magic);
 }
 
-static void xen_cpuid(unsigned int *eax, unsigned int *ebx,
-                      unsigned int *ecx, unsigned int *edx)
+static void xen_cpuid(unsigned int *ax, unsigned int *bx,
+                      unsigned int *cx, unsigned int *dx)
 {
         unsigned maskedx = ~0;
 
@@ -150,18 +150,18 @@ static void xen_cpuid(unsigned int *eax, unsigned int *ebx,
          * Mask out inconvenient features, to try and disable as many
          * unsupported kernel subsystems as possible.
          */
-        if (*eax == 1)
+        if (*ax == 1)
                 maskedx = ~((1 << X86_FEATURE_APIC) |  /* disable APIC */
                             (1 << X86_FEATURE_ACPI) |  /* disable ACPI */
                             (1 << X86_FEATURE_ACC));   /* thermal monitoring */
 
         asm(XEN_EMULATE_PREFIX "cpuid"
-                : "=a" (*eax),
-                  "=b" (*ebx),
-                  "=c" (*ecx),
-                  "=d" (*edx)
-                : "0" (*eax), "2" (*ecx));
-        *edx &= maskedx;
+                : "=a" (*ax),
+                  "=b" (*bx),
+                  "=c" (*cx),
+                  "=d" (*dx)
+                : "0" (*ax), "2" (*cx));
+        *dx &= maskedx;
 }
 
 static void xen_set_debugreg(int reg, unsigned long val)
diff --git a/arch/x86/xen/events.c b/arch/x86/xen/events.c
index 6d1da5809e6f..aebab9704dd7 100644
--- a/arch/x86/xen/events.c
+++ b/arch/x86/xen/events.c
@@ -487,7 +487,7 @@ fastcall void xen_evtchn_do_upcall(struct pt_regs *regs)
                         int irq = evtchn_to_irq[port];
 
                         if (irq != -1) {
-                                regs->orig_eax = ~irq;
+                                regs->orig_ax = ~irq;
                                 do_IRQ(regs);
                         }
                 }