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| author | Boris Ostrovsky | 2015-08-10 22:34:36 +0200 |
|---|---|---|
| committer | David Vrabel | 2015-08-20 13:25:25 +0200 |
| commit | 6b08cd6328c58a2ae190c5ee03a2ffcab5ef828e (patch) | |
| tree | 90fd9fee020e844c50f2b0c9bd40b8ccffdfe14b /arch/x86/xen/pmu.h | |
| parent | xen/PMU: Describe vendor-specific PMU registers (diff) | |
| download | kernel-qcow2-linux-6b08cd6328c58a2ae190c5ee03a2ffcab5ef828e.tar.gz kernel-qcow2-linux-6b08cd6328c58a2ae190c5ee03a2ffcab5ef828e.tar.xz kernel-qcow2-linux-6b08cd6328c58a2ae190c5ee03a2ffcab5ef828e.zip | |
xen/PMU: Intercept PMU-related MSR and APIC accesses
Provide interfaces for recognizing accesses to PMU-related MSRs and
LVTPC APIC and process these accesses in Xen PMU code.
(The interrupt handler performs XENPMU_flush right away in the beginning
since no PMU emulation is available. It will be added with a later patch).
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'arch/x86/xen/pmu.h')
| -rw-r--r-- | arch/x86/xen/pmu.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/xen/pmu.h b/arch/x86/xen/pmu.h index a76d2cf83581..af5f0ad94078 100644 --- a/arch/x86/xen/pmu.h +++ b/arch/x86/xen/pmu.h @@ -7,5 +7,9 @@ irqreturn_t xen_pmu_irq_handler(int irq, void *dev_id); void xen_pmu_init(int cpu); void xen_pmu_finish(int cpu); bool is_xen_pmu(int cpu); +bool pmu_msr_read(unsigned int msr, uint64_t *val, int *err); +bool pmu_msr_write(unsigned int msr, uint32_t low, uint32_t high, int *err); +int pmu_apic_update(uint32_t reg); +unsigned long long xen_read_pmc(int counter); #endif /* __XEN_PMU_H */ |