diff options
Diffstat (limited to 'drivers/lguest/segments.c')
| -rw-r--r-- | drivers/lguest/segments.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/lguest/segments.c b/drivers/lguest/segments.c index 9b81119..95eb9cf 100644 --- a/drivers/lguest/segments.c +++ b/drivers/lguest/segments.c @@ -73,14 +73,14 @@ static void fixup_gdt_table(struct lguest *lg, unsigned start, unsigned end) /* Segment descriptors contain a privilege level: the Guest is * sometimes careless and leaves this as 0, even though it's * running at privilege level 1. If so, we fix it here. */ - if ((lg->gdt[i].b & 0x00006000) == 0) - lg->gdt[i].b |= (GUEST_PL << 13); + if ((lg->arch.gdt[i].b & 0x00006000) == 0) + lg->arch.gdt[i].b |= (GUEST_PL << 13); /* Each descriptor has an "accessed" bit. If we don't set it * now, the CPU will try to set it when the Guest first loads * that entry into a segment register. But the GDT isn't * writable by the Guest, so bad things can happen. */ - lg->gdt[i].b |= 0x00000100; + lg->arch.gdt[i].b |= 0x00000100; } } @@ -106,12 +106,12 @@ void setup_default_gdt_entries(struct lguest_ro_state *state) void setup_guest_gdt(struct lguest *lg) { /* Start with full 0-4G segments... */ - lg->gdt[GDT_ENTRY_KERNEL_CS] = FULL_EXEC_SEGMENT; - lg->gdt[GDT_ENTRY_KERNEL_DS] = FULL_SEGMENT; + lg->arch.gdt[GDT_ENTRY_KERNEL_CS] = FULL_EXEC_SEGMENT; + lg->arch.gdt[GDT_ENTRY_KERNEL_DS] = FULL_SEGMENT; /* ...except the Guest is allowed to use them, so set the privilege * level appropriately in the flags. */ - lg->gdt[GDT_ENTRY_KERNEL_CS].b |= (GUEST_PL << 13); - lg->gdt[GDT_ENTRY_KERNEL_DS].b |= (GUEST_PL << 13); + lg->arch.gdt[GDT_ENTRY_KERNEL_CS].b |= (GUEST_PL << 13); + lg->arch.gdt[GDT_ENTRY_KERNEL_DS].b |= (GUEST_PL << 13); } /* Like the IDT, we never simply use the GDT the Guest gives us. We set up the @@ -126,7 +126,7 @@ void copy_gdt_tls(const struct lguest *lg, struct desc_struct *gdt) unsigned int i; for (i = GDT_ENTRY_TLS_MIN; i <= GDT_ENTRY_TLS_MAX; i++) - gdt[i] = lg->gdt[i]; + gdt[i] = lg->arch.gdt[i]; } /* This is the full version */ @@ -138,7 +138,7 @@ void copy_gdt(const struct lguest *lg, struct desc_struct *gdt) * replaced. See ignored_gdt() above. */ for (i = 0; i < GDT_ENTRIES; i++) if (!ignored_gdt(i)) - gdt[i] = lg->gdt[i]; + gdt[i] = lg->arch.gdt[i]; } /* This is where the Guest asks us to load a new GDT (LHCALL_LOAD_GDT). */ @@ -146,12 +146,12 @@ void load_guest_gdt(struct lguest *lg, unsigned long table, u32 num) { /* We assume the Guest has the same number of GDT entries as the * Host, otherwise we'd have to dynamically allocate the Guest GDT. */ - if (num > ARRAY_SIZE(lg->gdt)) + if (num > ARRAY_SIZE(lg->arch.gdt)) kill_guest(lg, "too many gdt entries %i", num); /* We read the whole thing in, then fix it up. */ - lgread(lg, lg->gdt, table, num * sizeof(lg->gdt[0])); - fixup_gdt_table(lg, 0, ARRAY_SIZE(lg->gdt)); + lgread(lg, lg->arch.gdt, table, num * sizeof(lg->arch.gdt[0])); + fixup_gdt_table(lg, 0, ARRAY_SIZE(lg->arch.gdt)); /* Mark that the GDT changed so the core knows it has to copy it again, * even if the Guest is run on the same CPU. */ lg->changed |= CHANGED_GDT; @@ -159,7 +159,7 @@ void load_guest_gdt(struct lguest *lg, unsigned long table, u32 num) void guest_load_tls(struct lguest *lg, unsigned long gtls) { - struct desc_struct *tls = &lg->gdt[GDT_ENTRY_TLS_MIN]; + struct desc_struct *tls = &lg->arch.gdt[GDT_ENTRY_TLS_MIN]; lgread(lg, tls, gtls, sizeof(*tls)*GDT_ENTRY_TLS_ENTRIES); fixup_gdt_table(lg, GDT_ENTRY_TLS_MIN, GDT_ENTRY_TLS_MAX+1); |
