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| author | Bui Quang Minh <minhquangbui99@gmail.com> | 2024-01-11 22:44:00 +0700 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-02-14 06:09:32 -0500 |
| commit | 774204cf9874e58dc7fc13394a505452357750ad (patch) | |
| tree | 0769e519412bc9f51a56669011770eb415bb433d /hw/intc/apic_common.c | |
| parent | b5ee0468e9d28c6bd47cce70f90b5032dd10ecc2 (diff) | |
| download | focaccia-qemu-774204cf9874e58dc7fc13394a505452357750ad.tar.gz focaccia-qemu-774204cf9874e58dc7fc13394a505452357750ad.zip | |
apic, i386/tcg: add x2apic transitions
This commit adds support for x2APIC transitions when writing to MSR_IA32_APICBASE register and finally adds CPUID_EXT_X2APIC to TCG_EXT_FEATURES. The set_base in APICCommonClass now returns an integer to indicate error in execution. apic_set_base return -1 on invalid APIC state transition, accelerator can use this to raise appropriate exception. Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com> Message-Id: <20240111154404.5333-4-minhquangbui99@gmail.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/intc/apic_common.c')
| -rw-r--r-- | hw/intc/apic_common.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/hw/intc/apic_common.c b/hw/intc/apic_common.c index 3c43ac9a1d..16ab40a35f 100644 --- a/hw/intc/apic_common.c +++ b/hw/intc/apic_common.c @@ -35,20 +35,19 @@ bool apic_report_tpr_access; -void cpu_set_apic_base(DeviceState *dev, uint64_t val) +int cpu_set_apic_base(DeviceState *dev, uint64_t val) { trace_cpu_set_apic_base(val); if (dev) { APICCommonState *s = APIC_COMMON(dev); APICCommonClass *info = APIC_COMMON_GET_CLASS(s); - /* switching to x2APIC, reset possibly modified xAPIC ID */ - if (!(s->apicbase & MSR_IA32_APICBASE_EXTD) && - (val & MSR_IA32_APICBASE_EXTD)) { - s->id = s->initial_apic_id; - } - info->set_base(s, val); + /* Reset possibly modified xAPIC ID */ + s->id = s->initial_apic_id; + return info->set_base(s, val); } + + return 0; } uint64_t cpu_get_apic_base(DeviceState *dev) |