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d="scan'208";a="107797746" From: Andrew Cooper To: Xen-devel CC: Andrew Cooper , Jan Beulich , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Wei Liu Subject: [PATCH 1/6] x86/cpu-policy: Drop build time cross-checks of featureset sizes Date: Thu, 4 May 2023 20:39:19 +0100 Message-ID: <20230504193924.3305496-2-andrew.cooper3@citrix.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230504193924.3305496-1-andrew.cooper3@citrix.com> References: <20230504193924.3305496-1-andrew.cooper3@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1683229211493100005 These BUILD_BUG_ON()s exist to cover the curious absence of a diagnostic for code which looks like: uint32_t foo[1] =3D { 1, 2, 3 }; However, GCC 12 at least does now warn for this: foo.c:1:24: error: excess elements in array initializer [-Werror] 884 | uint32_t foo[1] =3D { 1, 2, 3 }; | ^ foo.c:1:24: note: (near initialization for 'foo') and has found other array length issues which we want to fix. Drop the cro= ss check now tools can spot the problem case directly. Signed-off-by: Andrew Cooper --- CC: Jan Beulich CC: Roger Pau Monn=C3=A9 CC: Wei Liu --- xen/arch/x86/cpu-policy.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/xen/arch/x86/cpu-policy.c b/xen/arch/x86/cpu-policy.c index ef6a2d0d180a..44c88debf958 100644 --- a/xen/arch/x86/cpu-policy.c +++ b/xen/arch/x86/cpu-policy.c @@ -883,12 +883,6 @@ void __init init_dom0_cpuid_policy(struct domain *d) =20 static void __init __maybe_unused build_assertions(void) { - BUILD_BUG_ON(ARRAY_SIZE(known_features) !=3D FSCAPINTS); - BUILD_BUG_ON(ARRAY_SIZE(pv_max_featuremask) !=3D FSCAPINTS); - BUILD_BUG_ON(ARRAY_SIZE(hvm_shadow_max_featuremask) !=3D FSCAPINTS); - BUILD_BUG_ON(ARRAY_SIZE(hvm_hap_max_featuremask) !=3D FSCAPINTS); - BUILD_BUG_ON(ARRAY_SIZE(deep_features) !=3D FSCAPINTS); - /* Find some more clever allocation scheme if this trips. */ BUILD_BUG_ON(sizeof(struct cpu_policy) > PAGE_SIZE); =20 --=20 2.30.2