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authorGlauber de Oliveira Costa <gcosta@redhat.com>2008-01-07 11:05:37 -0200
committerRusty Russell <rusty@rustcorp.com.au>2008-01-30 22:50:14 +1100
commit1713608f280002d9ffc6de89d7de5cf367072d63 (patch)
tree332e7bdbe7ccccad408b309a4dd00b706b04082f /drivers/lguest/x86
parent5e232f4f428c4266ba5cdae9f23ba19a0913dcf9 (diff)
lguest: per-vcpu lguest pgdir management
this patch makes the pgdir management per-vcpu. The pgdirs pool is still guest-wide (although it'll probably need to grow when we are really executing more vcpus), but the pgdidx index is gone, since it makes no sense anymore. Instead, we use a per-vcpu index. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/lguest/x86')
-rw-r--r--drivers/lguest/x86/core.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c
index 65f2e3809475..8c723555ffb3 100644
--- a/drivers/lguest/x86/core.c
+++ b/drivers/lguest/x86/core.c
@@ -145,7 +145,7 @@ static void run_guest_once(struct lg_cpu *cpu, struct lguest_pages *pages)
* 0-th argument above, ie "a"). %ebx contains the
* physical address of the Guest's top-level page
* directory. */
- : "0"(pages), "1"(__pa(lg->pgdirs[lg->pgdidx].pgdir))
+ : "0"(pages), "1"(__pa(lg->pgdirs[cpu->cpu_pgd].pgdir))
/* We tell gcc that all these registers could change,
* which means we don't have to save and restore them in
* the Switcher. */
@@ -223,7 +223,7 @@ static int emulate_insn(struct lg_cpu *cpu)
unsigned int insnlen = 0, in = 0, shift = 0;
/* The eip contains the *virtual* address of the Guest's instruction:
* guest_pa just subtracts the Guest's page_offset. */
- unsigned long physaddr = guest_pa(lg, cpu->regs->eip);
+ unsigned long physaddr = guest_pa(cpu, cpu->regs->eip);
/* This must be the Guest kernel trying to do something, not userspace!
* The bottom two bits of the CS segment register are the privilege
@@ -305,7 +305,8 @@ void lguest_arch_handle_trap(struct lg_cpu *cpu)
*
* The errcode tells whether this was a read or a write, and
* whether kernel or userspace code. */
- if (demand_page(lg,cpu->arch.last_pagefault,cpu->regs->errcode))
+ if (demand_page(cpu, cpu->arch.last_pagefault,
+ cpu->regs->errcode))
return;
/* OK, it's really not there (or not OK): the Guest needs to