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authorGlauber de Oliveira Costa <gcosta@redhat.com>2008-01-17 19:19:42 -0200
committerRusty Russell <rusty@rustcorp.com.au>2008-01-30 22:50:18 +1100
commit382ac6b3fbc0ea6a5697fc6caaf7e7de12fa8b96 (patch)
treebdda012251f29775b2e1201f3b2b3e38c4680f42 /drivers/lguest/core.c
parent934faab464c6a26ed1a226b6cf7111b35405dde1 (diff)
downloadlinux-382ac6b3fbc0ea6a5697fc6caaf7e7de12fa8b96.tar.bz2
lguest: get rid of lg variable assignments
We can save some lines of code by getting rid of *lg = cpu... lines of code spread everywhere by now. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/lguest/core.c')
-rw-r--r--drivers/lguest/core.c24
1 files changed, 11 insertions, 13 deletions
diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c
index 6023872e32d0..7743d73768df 100644
--- a/drivers/lguest/core.c
+++ b/drivers/lguest/core.c
@@ -151,23 +151,23 @@ int lguest_address_ok(const struct lguest *lg,
/* This routine copies memory from the Guest. Here we can see how useful the
* kill_lguest() routine we met in the Launcher can be: we return a random
* value (all zeroes) instead of needing to return an error. */
-void __lgread(struct lguest *lg, void *b, unsigned long addr, unsigned bytes)
+void __lgread(struct lg_cpu *cpu, void *b, unsigned long addr, unsigned bytes)
{
- if (!lguest_address_ok(lg, addr, bytes)
- || copy_from_user(b, lg->mem_base + addr, bytes) != 0) {
+ if (!lguest_address_ok(cpu->lg, addr, bytes)
+ || copy_from_user(b, cpu->lg->mem_base + addr, bytes) != 0) {
/* copy_from_user should do this, but as we rely on it... */
memset(b, 0, bytes);
- kill_guest(lg, "bad read address %#lx len %u", addr, bytes);
+ kill_guest(cpu, "bad read address %#lx len %u", addr, bytes);
}
}
/* This is the write (copy into guest) version. */
-void __lgwrite(struct lguest *lg, unsigned long addr, const void *b,
+void __lgwrite(struct lg_cpu *cpu, unsigned long addr, const void *b,
unsigned bytes)
{
- if (!lguest_address_ok(lg, addr, bytes)
- || copy_to_user(lg->mem_base + addr, b, bytes) != 0)
- kill_guest(lg, "bad write address %#lx len %u", addr, bytes);
+ if (!lguest_address_ok(cpu->lg, addr, bytes)
+ || copy_to_user(cpu->lg->mem_base + addr, b, bytes) != 0)
+ kill_guest(cpu, "bad write address %#lx len %u", addr, bytes);
}
/*:*/
@@ -176,10 +176,8 @@ void __lgwrite(struct lguest *lg, unsigned long addr, const void *b,
* going around and around until something interesting happens. */
int run_guest(struct lg_cpu *cpu, unsigned long __user *user)
{
- struct lguest *lg = cpu->lg;
-
/* We stop running once the Guest is dead. */
- while (!lg->dead) {
+ while (!cpu->lg->dead) {
/* First we run any hypercalls the Guest wants done. */
if (cpu->hcall)
do_hypercalls(cpu);
@@ -212,7 +210,7 @@ int run_guest(struct lg_cpu *cpu, unsigned long __user *user)
/* Just make absolutely sure the Guest is still alive. One of
* those hypercalls could have been fatal, for example. */
- if (lg->dead)
+ if (cpu->lg->dead)
break;
/* If the Guest asked to be stopped, we sleep. The Guest's
@@ -237,7 +235,7 @@ int run_guest(struct lg_cpu *cpu, unsigned long __user *user)
lguest_arch_handle_trap(cpu);
}
- if (lg->dead == ERR_PTR(-ERESTART))
+ if (cpu->lg->dead == ERR_PTR(-ERESTART))
return -ERESTART;
/* The Guest is dead => "No such file or directory" */
return -ENOENT;