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xen-devel
[Xen-devel] Re: [RFC, PATCH 10/24] i386 Vmi descriptor changes
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To: |
virtualization@xxxxxxxxxxxxxx |
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Subject: |
[Xen-devel] Re: [RFC, PATCH 10/24] i386 Vmi descriptor changes |
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From: |
Andi Kleen <ak@xxxxxxx> |
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Date: |
Wed, 22 Mar 2006 21:24:01 +0100 |
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Cc: |
Zachary Amsden <zach@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Pratap Subrahmanyam <pratap@xxxxxxxxxx>, Wim Coekaerts <wim.coekaerts@xxxxxxxxxx>, Joshua LeVasseur <jtl@xxxxxxxxxx>, Dan Hecht <dhecht@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Jack Lo <jlo@xxxxxxxxxx>, Christopher Li <chrisl@xxxxxxxxxx>, Chris Wright <chrisw@xxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxx>, Anne Holler <anne@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxxxx>, Jyothy Reddy <jreddy@xxxxxxxxxx>, Kip Macy <kmacy@xxxxxxxxxxx>, Ky Srinivasan <ksrinivasan@xxxxxxxxxx>, Leendert van Doorn <leendert@xxxxxxxxxxxxxx>, Dan Arai <arai@xxxxxxxxxx> |
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Thu, 23 Mar 2006 17:46:59 +0000 |
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> -#define _set_gate(gate_addr,type,dpl,addr,seg) \
> -do { \
> - int __d0, __d1; \
> - __asm__ __volatile__ ("movw %%dx,%%ax\n\t" \
> - "movw %4,%%dx\n\t" \
> - "movl %%eax,%0\n\t" \
> - "movl %%edx,%1" \
> - :"=m" (*((long *) (gate_addr))), \
> - "=m" (*(1+(long *) (gate_addr))), "=&a" (__d0), "=&d" (__d1) \
> - :"i" ((short) (0x8000+(dpl<<13)+(type<<8))), \
> - "3" ((char *) (addr)),"2" ((seg) << 16)); \
> -} while (0)
The ugly piece of code doesn't do anything priviledged. So why do you want
to move it?
-Andi
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