diff options
author | K. Y. Srinivasan <kys@microsoft.com> | 2018-05-16 14:53:33 -0700 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2018-05-19 13:23:18 +0200 |
commit | 800b8f03fdc8d66885ff03de531285526a4ca0d4 (patch) | |
tree | e935e1e8be726544d68c3c1a3cd6177fb1b745d3 /arch/x86/hyperv/mmu.c | |
parent | 366f03b0cf90ef55f063d4a54cf62b0ac9b6da9d (diff) | |
download | linux-800b8f03fdc8d66885ff03de531285526a4ca0d4.tar.bz2 |
X86/Hyper-V: Consolidate code for converting cpumask to vpset
Consolidate code for converting cpumask to vpset.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Cc: olaf@aepfle.de
Cc: sthemmin@microsoft.com
Cc: gregkh@linuxfoundation.org
Cc: jasowang@redhat.com
Cc: Michael.H.Kelley@microsoft.com
Cc: hpa@zytor.com
Cc: apw@canonical.com
Cc: devel@linuxdriverproject.org
Cc: vkuznets@redhat.com
Link: https://lkml.kernel.org/r/20180516215334.6547-4-kys@linuxonhyperv.com
Diffstat (limited to 'arch/x86/hyperv/mmu.c')
-rw-r--r-- | arch/x86/hyperv/mmu.c | 43 |
1 files changed, 2 insertions, 41 deletions
diff --git a/arch/x86/hyperv/mmu.c b/arch/x86/hyperv/mmu.c index adee39a7a3f2..c9cd28f0bae4 100644 --- a/arch/x86/hyperv/mmu.c +++ b/arch/x86/hyperv/mmu.c @@ -25,11 +25,7 @@ struct hv_flush_pcpu { struct hv_flush_pcpu_ex { u64 address_space; u64 flags; - struct { - u64 format; - u64 valid_bank_mask; - u64 bank_contents[]; - } hv_vp_set; + struct hv_vpset hv_vp_set; u64 gva_list[]; }; @@ -70,41 +66,6 @@ static inline int fill_gva_list(u64 gva_list[], int offset, return gva_n - offset; } -/* Return the number of banks in the resulting vp_set */ -static inline int cpumask_to_vp_set(struct hv_flush_pcpu_ex *flush, - const struct cpumask *cpus) -{ - int cpu, vcpu, vcpu_bank, vcpu_offset, nr_bank = 1; - - /* valid_bank_mask can represent up to 64 banks */ - if (hv_max_vp_index / 64 >= 64) - return 0; - - /* - * Clear all banks up to the maximum possible bank as hv_flush_pcpu_ex - * structs are not cleared between calls, we risk flushing unneeded - * vCPUs otherwise. - */ - for (vcpu_bank = 0; vcpu_bank <= hv_max_vp_index / 64; vcpu_bank++) - flush->hv_vp_set.bank_contents[vcpu_bank] = 0; - - /* - * Some banks may end up being empty but this is acceptable. - */ - for_each_cpu(cpu, cpus) { - vcpu = hv_cpu_number_to_vp_number(cpu); - vcpu_bank = vcpu / 64; - vcpu_offset = vcpu % 64; - __set_bit(vcpu_offset, (unsigned long *) - &flush->hv_vp_set.bank_contents[vcpu_bank]); - if (vcpu_bank >= nr_bank) - nr_bank = vcpu_bank + 1; - } - flush->hv_vp_set.valid_bank_mask = GENMASK_ULL(nr_bank - 1, 0); - - return nr_bank; -} - static void hyperv_flush_tlb_others(const struct cpumask *cpus, const struct flush_tlb_info *info) { @@ -240,7 +201,7 @@ static void hyperv_flush_tlb_others_ex(const struct cpumask *cpus, if (!cpumask_equal(cpus, cpu_present_mask)) { flush->hv_vp_set.format = HV_GENERIC_SET_SPARSE_4K; - nr_bank = cpumask_to_vp_set(flush, cpus); + nr_bank = cpumask_to_vpset(&(flush->hv_vp_set), cpus); } if (!nr_bank) { |