Now that we allow the bios to write protect option roms, we need to allow
the tpr patching code to write to this write protected memory. This means
using cpu_physical_memory_write_rom() instead of the usual APIs.
Fixes Windows XP without flexpriority.
Signed-off-by: Avi Kivity <a...@redhat.com>
---
kvm-tpr-opt.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/kvm-tpr-opt.c b/kvm-tpr-opt.c
index 46890e2..c929fc8 100644
--- a/kvm-tpr-opt.c
+++ b/kvm-tpr-opt.c
@@ -73,7 +73,7 @@ static uint8_t read_byte_virt(CPUState *env, target_ulong
virt)
static void write_byte_virt(CPUState *env, target_ulong virt, uint8_t b)
{
- stb_phys(map_addr(env, virt, NULL), b);
+ cpu_physical_memory_write_rom(map_addr(env, virt, NULL), &b, 1);
}
struct vapic_bios {
@@ -107,7 +107,7 @@ static void update_vbios_real_tpr(void)
cpu_physical_memory_rw(vbios_desc_phys, (void *)&vapic_bios, sizeof
vapic_bios, 0);
vapic_bios.real_tpr = real_tpr;
vapic_bios.vcpu_shift = 7;
- cpu_physical_memory_rw(vbios_desc_phys, (void *)&vapic_bios, sizeof
vapic_bios, 1);
+ cpu_physical_memory_write_rom(vbios_desc_phys, (void *)&vapic_bios, sizeof
vapic_bios);
}
static unsigned modrm_reg(uint8_t modrm)
@@ -174,6 +174,7 @@ static int bios_is_mapped(CPUState *env, uint64_t rip)
unsigned perms;
uint32_t i;
uint32_t offset, fixup, start = vapic_bios_addr ? : 0xe0000;
+ uint32_t patch;
if (bios_enabled)
return 1;
@@ -198,7 +199,8 @@ static int bios_is_mapped(CPUState *env, uint64_t rip)
for (i = vapic_bios.fixup_start; i < vapic_bios.fixup_end; i += 4) {
offset = ldl_phys(phys + i - vapic_bios.virt_base);
fixup = phys + offset;
- stl_phys(fixup, ldl_phys(fixup) + bios_addr - vapic_bios.virt_base);
+ patch = ldl_phys(fixup) + bios_addr - vapic_bios.virt_base;
+ cpu_physical_memory_write_rom(fixup, (uint8_t *)&patch, 4);
}
vapic_phys = vapic_bios.vapic - vapic_bios.virt_base + phys;
return 1;
@@ -225,7 +227,7 @@ int kvm_tpr_enable_vapic(CPUState *env)
return 0;
kvm_enable_vapic(env, vapic_phys + (pcr_cpu << 7));
- cpu_physical_memory_rw(vapic_phys + (pcr_cpu << 7) + 4, &one, 1, 1);
+ cpu_physical_memory_write_rom(vapic_phys + (pcr_cpu << 7) + 4, &one, 1);
env->kvm_vcpu_update_vapic = 0;
bios_enabled = 1;
return 1;
--
1.7.2.3
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