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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [IA64] Remove unused code (vmx_uaccess).
# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID aed7ef54fbfe31c257b54c7e6d17f480f27e2630
# Parent fffb36174ddb70ddcda84d66b6389722dc37e1bd
[IA64] Remove unused code (vmx_uaccess).
Signed-off-by: Tristan Gingold <tristan.gingold@xxxxxxxx>
---
xen/include/asm-ia64/vmx_uaccess.h | 156 -------------------------------------
xen/arch/ia64/vmx/vmmu.c | 49 -----------
2 files changed, 205 deletions(-)
diff -r fffb36174ddb -r aed7ef54fbfe xen/arch/ia64/vmx/vmmu.c
--- a/xen/arch/ia64/vmx/vmmu.c Wed Oct 18 22:06:38 2006 -0600
+++ b/xen/arch/ia64/vmx/vmmu.c Wed Oct 18 22:06:49 2006 -0600
@@ -735,52 +735,3 @@ IA64FAULT vmx_vcpu_tak(VCPU *vcpu, u64 v
}
return IA64_NO_FAULT;
}
-
-/*
- * [FIXME] Is there any effective way to move this routine
- * into vmx_uaccess.h? struct exec_domain is incomplete type
- * in that way...
- *
- * This is the interface to lookup virtual TLB, and then
- * return corresponding machine address in 2nd parameter.
- * The 3rd parameter contains how many bytes mapped by
- * matched vTLB entry, thus to allow caller copy more once.
- *
- * If failed to lookup, -EFAULT is returned. Or else reutrn
- * 0. All upper domain access utilities rely on this routine
- * to determine the real machine address.
- *
- * Yes, put_user and get_user seems to somhow slow upon it.
- * However it's the necessary steps for any vmx domain virtual
- * address, since that's difference address space as HV's one.
- * Later some short-circuit may be created for special case
- */
-long
-__domain_va_to_ma(unsigned long va, unsigned long* ma, unsigned long *len)
-{
- unsigned long mpfn, gpfn, m, n = *len;
- unsigned long end; /* end of the area mapped by current entry */
- thash_data_t *entry;
- struct vcpu *v = current;
-
- entry = vtlb_lookup(v, va, DSIDE_TLB);
- if (entry == NULL)
- return -EFAULT;
-
- gpfn =(entry->ppn>>(PAGE_SHIFT-12));
- gpfn =PAGEALIGN(gpfn,(entry->ps-PAGE_SHIFT));
- gpfn = gpfn | POFFSET(va>>PAGE_SHIFT,(entry->ps-PAGE_SHIFT));
-
- mpfn = gmfn_to_mfn(v->domain, gpfn);
- m = (mpfn<<PAGE_SHIFT) | (va & (PAGE_SIZE - 1));
- /* machine address may be not continuous */
- end = PAGEALIGN(m, PAGE_SHIFT) + PAGE_SIZE;
- /*end = PAGEALIGN(m, entry->ps) + PSIZE(entry->ps);*/
- /* Current entry can't map all requested area */
- if ((m + n) > end)
- n = end - m;
-
- *ma = m;
- *len = n;
- return 0;
-}
diff -r fffb36174ddb -r aed7ef54fbfe xen/include/asm-ia64/vmx_uaccess.h
--- a/xen/include/asm-ia64/vmx_uaccess.h Wed Oct 18 22:06:38 2006 -0600
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,156 +0,0 @@
-/* -*- Mode:C; c-basic-offset:4; tab-width:4; indent-tabs-mode:nil -*- */
-/*
- * vmx_uaccess.h: Defines vmx specific macros to transfer memory areas
- * across the domain/hypervisor boundary.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Note: For vmx enabled environment, poor man's policy is actually
- * useless since HV resides in completely different address space as
- * domain. So the only way to do the access is search vTLB first, and
- * access identity mapped address if hit.
- *
- * Copyright (c) 2004, Intel Corporation.
- * Kun Tian (Kevin Tian) (kevin.tian@xxxxxxxxx)
- */
-
-#ifndef __ASM_IA64_VMX_UACCESS_H__
-#define __ASM_IA64_VMX_UACCESS_H__
-
-#include <xen/compiler.h>
-#include <xen/errno.h>
-#include <xen/sched.h>
-
-#include <asm/intrinsics.h>
-#include <asm/vmmu.h>
-
-/* Since HV never accesses domain space directly, most security check can
- * be dummy now
- */
-asm (".section \"__ex_table\", \"a\"\n\t.previous");
-
-/* For back compatibility */
-#define __access_ok(addr, size, segment) 1
-#define access_ok(addr, size, segment) __access_ok((addr), (size), (segment))
-
-/*
- * These are the main single-value transfer routines. They automatically
- * use the right size if we just have the right pointer type.
- *
- * Careful to not
- * (a) re-use the arguments for side effects (sizeof/typeof is ok)
- * (b) require any knowledge of processes at this stage
- */
-#define put_user(x, ptr) __put_user((x), (ptr))
-#define get_user(x, ptr) __get_user((x), (ptr))
-
-#define __put_user(x, ptr) __do_put_user((__typeof__(*(ptr))) (x), (ptr),
sizeof(*(ptr)))
-#define __get_user(x, ptr) __do_get_user((x), (ptr), sizeof(*(ptr)))
-
-/* TODO: add specific unaligned access later. If assuming aligned at
- * 1,2,4,8 bytes by far, it's impossible for operand spaning two
- * vTLB entry
- */
-extern long
-__domain_va_to_ma(unsigned long va, unsigned long* ma, unsigned long *len);
-
-#define __do_put_user(x, ptr, size) \
-({ \
- __typeof__ (x) __pu_x = (x); \
- __typeof__ (*(ptr)) __user *__pu_ptr = (ptr); \
- __typeof__ (size) __pu_size = (size); \
- unsigned long __pu_ma; \
- long __pu_err; \
- \
- __pu_err = __domain_va_to_ma((unsigned long)__pu_ptr, \
- &__pu_ma, &__pu_size); \
- __pu_err ? (__pu_err = -EFAULT) : \
- (*((__typeof__ (*(ptr)) *)__va(__pu_ma)) = x); \
- __pu_err; \
-})
-
-#define __do_get_user(x, ptr, size) \
-({ \
- __typeof__ (x) __gu_x = (x); \
- __typeof__ (*(ptr)) __user *__gu_ptr = (ptr); \
- __typeof__ (size) __gu_size = (size); \
- unsigned long __gu_ma; \
- long __gu_err; \
- \
- __gu_err = __domain_va_to_ma((unsigned long)__gu_ptr, \
- &__gu_ma, &__gu_size); \
- __gu_err ? (__gu_err = -EFAULT) : \
- (x = *((__typeof__ (*(ptr)) *)__va(__gu_ma))); \
- __gu_err; \
-})
-
-/* More complex copy from domain */
-#define copy_from_user(to, from, n) __copy_from_user((to), (from), (n))
-#define copy_to_user(to, from, n) __copy_to_user((to), (from), (n))
-#define clear_user(to, n) __clear_user((t0), (n))
-
-static inline unsigned long
-__copy_from_user(void *to, void *from, unsigned long n)
-{
- unsigned long ma, i;
-
- i = n;
- while(!__domain_va_to_ma((unsigned long)from, &ma, &i)) {
- memcpy(to, (void *)__va(ma), i);
- n -= i;
- if (!n)
- break;
- from += i;
- to += i;
- i = n;
- }
- return n;
-}
-
-static inline unsigned long
-__copy_to_user(void *to, void *from, unsigned long n)
-{
- unsigned long ma, i;
-
- i = n;
- while(!__domain_va_to_ma((unsigned long)to, &ma, &i)) {
- memcpy((void *)__va(ma), from, i);
- n -= i;
- if (!n)
- break;
- from += i;
- to += i;
- i = n;
- }
- return n;
-}
-
-static inline unsigned long
-__clear_user(void *to, unsigned long n)
-{
- unsigned long ma, i;
-
- i = n;
- while(!__domain_va_to_ma((unsigned long)to, &ma, &i)) {
- memset((void *)__va(ma), 0, i);
- n -= i;
- if (!n)
- break;
- to += i;
- i = n;
- }
- return n;
-}
-
-#endif // __ASM_IA64_VMX_UACCESS_H__
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