[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v2 12/12] xl / libxl: add 'ex_processor_mask' into 'libxl_viridian_enlightenment'
From: Paul Durrant <pdurrant@xxxxxxxxxx> Adding the new value into the enumeration makes it immediately available to xl, so this patch adjusts the xl.cfg(5) documentation accordingly. Signed-off-by: Paul Durrant <pdurrant@xxxxxxxxxx> --- Cc: Ian Jackson <iwj@xxxxxxxxxxxxxx> Cc: Wei Liu <wl@xxxxxxx> Cc: Anthony PERARD <anthony.perard@xxxxxxxxxx> --- docs/man/xl.cfg.5.pod.in | 8 ++++++++ tools/include/libxl.h | 7 +++++++ tools/libs/light/libxl_types.idl | 1 + tools/libs/light/libxl_x86.c | 3 +++ 4 files changed, 19 insertions(+) diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in index 0532739c1fff..3f0f8de1e988 100644 --- a/docs/man/xl.cfg.5.pod.in +++ b/docs/man/xl.cfg.5.pod.in @@ -2318,6 +2318,14 @@ This set incorporates use of a hypercall for interprocessor interrupts. This enlightenment may improve performance of Windows guests with multiple virtual CPUs. +=item B<ex_processor_masks> + +This set enables new hypercall variants taking a variably-sized sparse +B<Virtual Processor Set> as an argument, rather than a simple 64-bit +mask. Hence this enlightenment must be specified for guests with more +than 64 vCPUs if B<hcall_remote_tlb_flush> and/or B<hcall_ipi> are also +specified. + =item B<defaults> This is a special value that enables the default set of groups, which diff --git a/tools/include/libxl.h b/tools/include/libxl.h index 1ea5b4f446e8..eaffccb30f37 100644 --- a/tools/include/libxl.h +++ b/tools/include/libxl.h @@ -444,6 +444,13 @@ */ #define LIBXL_HAVE_DISK_SAFE_REMOVE 1 +/* + * LIBXL_HAVE_VIRIDIAN_EX_PROCESSOR_MASKS indicates that the + * 'ex_processor_masks' value is present in the viridian enlightenment + * enumeration. + */ +#define LIBXL_HAVE_VIRIDIAN_EX_PROCESSOR_MASKS 1 + /* * libxl ABI compatibility * diff --git a/tools/libs/light/libxl_types.idl b/tools/libs/light/libxl_types.idl index 9d3f05f39978..05324736b744 100644 --- a/tools/libs/light/libxl_types.idl +++ b/tools/libs/light/libxl_types.idl @@ -238,6 +238,7 @@ libxl_viridian_enlightenment = Enumeration("viridian_enlightenment", [ (7, "synic"), (8, "stimer"), (9, "hcall_ipi"), + (10, "ex_processor_masks"), ]) libxl_hdtype = Enumeration("hdtype", [ diff --git a/tools/libs/light/libxl_x86.c b/tools/libs/light/libxl_x86.c index e18274cc10e2..86d272999d67 100644 --- a/tools/libs/light/libxl_x86.c +++ b/tools/libs/light/libxl_x86.c @@ -366,6 +366,9 @@ static int hvm_set_viridian_features(libxl__gc *gc, uint32_t domid, if (libxl_bitmap_test(&enlightenments, LIBXL_VIRIDIAN_ENLIGHTENMENT_HCALL_IPI)) mask |= HVMPV_hcall_ipi; + if (libxl_bitmap_test(&enlightenments, LIBXL_VIRIDIAN_ENLIGHTENMENT_EX_PROCESSOR_MASKS)) + mask |= HVMPV_ex_processor_masks; + if (mask != 0 && xc_hvm_param_set(CTX->xch, domid, -- 2.20.1
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