x86-64: make pda's cpunumber and nodenumber unsigned

This generally allows better code to be generated, since the zero-
extension during 32-bit operations comes for free (needed when the
result is used as array index or similar), whereas sign extension must
be done explicitly and frequently requires a one byte larger
instruction due to the necessary rex64 prefix.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/include/asm-x86/pda.h b/include/asm-x86/pda.h
index 3d9dd653628a1bb3eb465d7deb3884b6dc240f1d..b620d0c39a937ab4ce3cb99012aa8bf7d0b0a0c9 100644 (file)
--- a/include/asm-x86/pda.h
+++ b/include/asm-x86/pda.h
@@ -15,14 +15,14 @@ struct x8664_pda {
        unsigned long kernelstack;  /* 16 top of kernel stack for current */
        unsigned long oldrsp;       /* 24 user rsp for system call */
         int irqcount;              /* 32 Irq nesting counter. Starts with -1 */
-       int cpunumber;              /* 36 Logical CPU number */
+       unsigned int cpunumber;     /* 36 Logical CPU number */
 #ifdef CONFIG_CC_STACKPROTECTOR
        unsigned long stack_canary;     /* 40 stack canary value */
                                        /* gcc-ABI: this canary MUST be at
                                           offset 40!!! */
 #endif
        char *irqstackptr;
-       int nodenumber;             /* number of current node */
+       unsigned int nodenumber;        /* number of current node */
        unsigned int __softirq_pending;
        unsigned int __nmi_count;       /* number of NMI on this CPUs */
        short mmu_state;