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| author |   Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2021-11-02 19:36:36 -0400 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2021-11-11 13:09:32 +0100 |
| commit | ce2612b6706b4d0a70732795253722e3bd4ed953 (patch) | |
| tree | e8835b0b9202ee24f298777e9d9cda95d493c36b /arch/x86/include/asm/smp.h | |
| parent | Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 (diff) | |
| download | linux-dev-ce2612b6706b4d0a70732795253722e3bd4ed953.tar.xz linux-dev-ce2612b6706b4d0a70732795253722e3bd4ed953.zip | |
x86/smp: Factor out parts of native_smp_prepare_cpus()
Commit 66558b730f25 ("sched: Add cluster scheduler level for x86")
introduced cpu_l2c_shared_map mask which is expected to be initialized
by smp_op.smp_prepare_cpus(). That commit only updated
native_smp_prepare_cpus() version but not xen_pv_smp_prepare_cpus().
As result Xen PV guests crash in set_cpu_sibling_map().
While the new mask can be allocated in xen_pv_smp_prepare_cpus() one can
see that both versions of smp_prepare_cpus ops share a number of common
operations that can be factored out. So do that instead.
Fixes: 66558b730f25 ("sched: Add cluster scheduler level for x86")
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lkml.kernel.org/r/1635896196-18961-1-git-send-email-boris.ostrovsky@oracle.com
Diffstat (limited to 'arch/x86/include/asm/smp.h')
| -rw-r--r-- | arch/x86/include/asm/smp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 08b0e90623ad..81a0211a372d 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -126,6 +126,7 @@ static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask) void cpu_disable_common(void); void native_smp_prepare_boot_cpu(void); +void smp_prepare_cpus_common(void); void native_smp_prepare_cpus(unsigned int max_cpus); void calculate_max_logical_packages(void); void native_smp_cpus_done(unsigned int max_cpus); |