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| author | Maxime Ripard <mripard@kernel.org> | 2024-01-22 09:44:15 +0100 |
|---|---|---|
| committer | Maxime Ripard <mripard@kernel.org> | 2024-01-22 09:44:15 +0100 |
| commit | cf79f291f985662150363b4a93d16f88f12643bc (patch) | |
| tree | a803f6e9b1e34f100783538955b9ce34628cd5dd /drivers/xen/pcpu.c | |
| parent | a20f1b02bafcbf5a32d96a1d4185d6981cf7d016 (diff) | |
| parent | 6613476e225e090cc9aad49be7fa504e290dd33d (diff) | |
Merge v6.8-rc1 into drm-misc-fixes
Let's kickstart the 6.8 fix cycle.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Diffstat (limited to 'drivers/xen/pcpu.c')
| -rw-r--r-- | drivers/xen/pcpu.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/xen/pcpu.c b/drivers/xen/pcpu.c index b3e3d1bb37f3..508655273145 100644 --- a/drivers/xen/pcpu.c +++ b/drivers/xen/pcpu.c @@ -47,6 +47,9 @@ #include <asm/xen/hypervisor.h> #include <asm/xen/hypercall.h> +#ifdef CONFIG_ACPI +#include <acpi/processor.h> +#endif /* * @cpu_id: Xen physical cpu logic number @@ -400,4 +403,23 @@ bool __init xen_processor_present(uint32_t acpi_id) return online; } + +void xen_sanitize_proc_cap_bits(uint32_t *cap) +{ + struct xen_platform_op op = { + .cmd = XENPF_set_processor_pminfo, + .u.set_pminfo.id = -1, + .u.set_pminfo.type = XEN_PM_PDC, + }; + u32 buf[3] = { ACPI_PDC_REVISION_ID, 1, *cap }; + int ret; + + set_xen_guest_handle(op.u.set_pminfo.pdc, buf); + ret = HYPERVISOR_platform_op(&op); + if (ret) + pr_err("sanitize of _PDC buffer bits from Xen failed: %d\n", + ret); + else + *cap = buf[2]; +} #endif |