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d="scan'208";a="80415703" From: Ross Lagerwall To: CC: Jan Beulich , Andrew Cooper , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Wei Liu , Ross Lagerwall Subject: [PATCH] x86/amd: Only call setup_force_cpu_cap for boot CPU Date: Thu, 11 Aug 2022 11:59:56 +0100 Message-ID: <20220811105956.3984262-1-ross.lagerwall@citrix.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1660215691262100001 Content-Type: text/plain; charset="utf-8" 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 Reviewed-by: Jan Beulich --- This replaces "x86/cpu: Drop _init from *_cpu_cap functions". 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 29c59bcba4..d5f8e5e899 100644 --- a/xen/arch/x86/cpu/amd.c +++ b/xen/arch/x86/cpu/amd.c @@ -845,7 +845,7 @@ static void cf_check init_amd(struct cpuinfo_x86 *c) * everything, including reads and writes to address, and * LFENCE/SFENCE instructions. */ - if (!cpu_has_clflushopt) + if (c =3D=3D &boot_cpu_data && !cpu_has_clflushopt) setup_force_cpu_cap(X86_BUG_CLFLUSH_MFENCE); =20 switch(c->x86) --=20 2.31.1