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lguest: move changed bitmap to lg_cpu

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events represented in the 'changed' bitmap are per-cpu, not per-guest.
move it to the lg_cpu structure

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Glauber de Oliveira Costa
2008-01-17 19:14:46 -02:00
committed by Rusty Russell
parent f34f8c5fea
commit ae3749dcd8
4 changed files with 11 additions and 12 deletions
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drivers/lguest/x86/core.c
+5 -6
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@@ -75,7 +75,6 @@ static DEFINE_PER_CPU(struct lg_cpu *, last_cpu);
*/
static void copy_in_guest_info(struct lg_cpu *cpu, struct lguest_pages *pages)
{
struct lguest *lg = cpu->lg;
/* Copying all this data can be quite expensive. We usually run the
* same Guest we ran last time (and that Guest hasn't run anywhere else
* meanwhile). If that's not the case, we pretend everything in the
@@ -83,7 +82,7 @@ static void copy_in_guest_info(struct lg_cpu *cpu, struct lguest_pages *pages)
if (__get_cpu_var(last_cpu) != cpu || cpu->last_pages != pages) {
__get_cpu_var(last_cpu) = cpu;
cpu->last_pages = pages;
lg->changed = CHANGED_ALL;
cpu->changed = CHANGED_ALL;
}
/* These copies are pretty cheap, so we do them unconditionally: */
@@ -99,18 +98,18 @@ static void copy_in_guest_info(struct lg_cpu *cpu, struct lguest_pages *pages)
pages->state.guest_tss.ss1 = cpu->ss1;
/* Copy direct-to-Guest trap entries. */
if (lg->changed & CHANGED_IDT)
if (cpu->changed & CHANGED_IDT)
copy_traps(cpu, pages->state.guest_idt, default_idt_entries);
/* Copy all GDT entries which the Guest can change. */
if (lg->changed & CHANGED_GDT)
if (cpu->changed & CHANGED_GDT)
copy_gdt(cpu, pages->state.guest_gdt);
/* If only the TLS entries have changed, copy them. */
else if (lg->changed & CHANGED_GDT_TLS)
else if (cpu->changed & CHANGED_GDT_TLS)
copy_gdt_tls(cpu, pages->state.guest_gdt);
/* Mark the Guest as unchanged for next time. */
lg->changed = 0;
cpu->changed = 0;
}
/* Finally: the code to actually call into the Switcher to run the Guest. */