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target-i386: avoid overflow in the tsc-frequency property

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The TSC frequency fits comfortably in an int when expressed in kHz,
but it may overflow when converted to Hz. In this case,
tsc-frequency returns a negative value because x86_cpuid_get_tsc_freq
does a 32-bit multiplication before assigning to int64_t.

For simplicity just make tsc_khz a 64-bit value.

Backports commit 06ef227e5158cca6710e6c268d6a7f65a5e2811b from qemu
This commit is contained in:
Paolo Bonzini 2018-02-14 08:51:08 -05:00 committed by Lioncash
parent 13b919f5c8
commit fa2b872b0b
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1 changed files with 1 additions and 1 deletions
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qemu/target-i386/cpu.h
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@ -954,7 +954,7 @@ typedef struct CPUX86State {
uint8_t has_error_code;
uint32_t sipi_vector;
bool tsc_valid;
int tsc_khz;
int64_t tsc_khz;
void *kvm_xsave_buf;
uint64_t mcg_cap;