[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen stable-4.15] x86/amd: only call setup_force_cpu_cap for boot CPU
commit 104a54a307b08945365faf6d285cd5a02f94a80f Author: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx> AuthorDate: Mon Aug 15 15:43:08 2022 +0200 Commit: Jan Beulich <jbeulich@xxxxxxxx> CommitDate: Mon Aug 15 15:43:08 2022 +0200 x86/amd: only call setup_force_cpu_cap for boot CPU This should only be called for the boot CPU to avoid calling _init code after it has been unloaded. Fixes: 062868a5a8b4 ("x86/amd: Work around CLFLUSH ordering on older parts") Signed-off-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> master commit: 31b41ce858c8bd5159212d40969f8e0b7124bbf0 master date: 2022-08-11 17:44:26 +0200 --- xen/arch/x86/cpu/amd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/x86/cpu/amd.c b/xen/arch/x86/cpu/amd.c index 60dbe61a61..a8d2fb8a15 100644 --- a/xen/arch/x86/cpu/amd.c +++ b/xen/arch/x86/cpu/amd.c @@ -820,7 +820,7 @@ static void init_amd(struct cpuinfo_x86 *c) * everything, including reads and writes to address, and * LFENCE/SFENCE instructions. */ - if (!cpu_has_clflushopt) + if (c == &boot_cpu_data && !cpu_has_clflushopt) setup_force_cpu_cap(X86_BUG_CLFLUSH_MFENCE); switch(c->x86) -- generated by git-patchbot for /home/xen/git/xen.git#stable-4.15
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