From nobody Sun Sep 7 14:39:31 2025 Received: from mail-wm1-f74.google.com (mail-wm1-f74.google.com [209.85.128.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 88F0D30FC3D for ; Thu, 28 Aug 2025 10:23:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756376582; cv=none; b=ZFZT2TuAUL7vXzJKk1Yso5Et45O41q7uDiUF9PbrIpkt7X9ofdcwoAtSSouaKkBjtMLiSDoPmzE98Q/CqAZZAGKEuUJGkCSinFhetXV0562O+JqhxCo0mwV4ju9oZL2Su8oUBJaP6JfrphErKfD80o2hE3G3a0vnFGITsy7JCJI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756376582; c=relaxed/simple; bh=+8pWjOxpRQfdlwHX+KgUsBvgf6yJmN57ihMi46e11fo=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=G1PxVd+yZiknaCDLFgwxEGQMlQtF6BkKXzHiOhDZF6KpkkRWnuv1u5mSqoeKZMcM5chenO6J5xXKM4xSzQnaU3cfpCHfir9c1HVC5remMsczzamDmSiwq9wpbQQAVtIzTUE3W3efgeplpid41+VAqRkMOmaY+5d7efke7o6b6S8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--ardb.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=LDAXxxrh; arc=none smtp.client-ip=209.85.128.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--ardb.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="LDAXxxrh" Received: by mail-wm1-f74.google.com with SMTP id 5b1f17b1804b1-45a1b0bd6a9so4403775e9.2 for ; Thu, 28 Aug 2025 03:23:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756376579; x=1756981379; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=d4rk3wEJueWySwtycJx5daz9NstBI2BIFojglDvDsb8=; b=LDAXxxrh0Wz/rqSKIBd8SK1Mb4LqzPbPaobK7OXkkS1saiC0NyuLAOUrpiMDLINt69 dl5E1DnHpPomphA3ocLl8dUZHc4D21SdGumq5rvO2FQRwKJE9ej4en7nxDpiiOTxD8Dm 9wVoHt4oWeoqjTyokZm5c4I4NNKFWgbjPlzKNyVCuNqaEFB09ujAtZCcZv4Hf/uSRlwV Uf28PF9+n0MXdYVMdoQU1F6jB4Wvw6yFsKcSt/UBwy1uZDMynPmU9vEozwZK+LKOb6Vg F6KkGyu3f6xC1u1m8oBIxeQiRtQL/tUtyfWMekJ0lY3Azy7Xm70/2hbm+Qrbmoe4sOQ6 70nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756376579; x=1756981379; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=d4rk3wEJueWySwtycJx5daz9NstBI2BIFojglDvDsb8=; b=HmPIF/JKRNYUXjb0KiwxedqdKiemZmM7XBXHyVS9ALA/g+EyQGK73k2NWVSCJe+SHo H64BD/cjYPge/aaS9b2shK/lbrKPjL3DJNgl8q7241dFVE1aWL22B1AK1Hw4MYaDDJjr 15ZAtFT8zrijvBO4xQpM6NYQlMJ+vKgeUhyuYS8L54/FRBhdiGd0xvpd6q7W2Ec/QKOt M3+otbapL74yyWuy266jKu+T50zs3DVRJBMkUqhfDs4YJqR3jmDw93HsnCWvC63/xkVd 0RgNpUQvPDqGhhZAt+mUJ1ACXHe/ZpxnES8s1kKrOGLaNzV6Z6uF4om039WYCyAuITcB MUww== X-Gm-Message-State: AOJu0YxCPLl6z15w6voHSBYI/SsIzpT4xb8jnqONwY96zFsYyg2NfPs1 UchhSk2NRNGpWyT4aZuWNoJy6tW7zPWXZpiituN/R9iYZ/y3XONIMd0M/lOZUry1FTt1co3X4dI yLhkZlm0RXHOSBiWe7oq1sqriGaijDRHqH5qMmZjzLVvz55tHWrGbzi9MucpEpiU7rpjWh/KrQ6 jDDBC5jGzy5+upqyYe1NiUvI1IIB45lLRsgg== X-Google-Smtp-Source: AGHT+IG3BmigcJlNLMlMpzE7DBUDp5cG/4N0fqRfL+xcmSA3Ucv6tdTE2jPPt3mYZmEBVWRKo1b3Xxf1 X-Received: from wmbbi7.prod.google.com ([2002:a05:600c:3d87:b0:45b:6337:ab6b]) (user=ardb job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:3b25:b0:459:da89:b06 with SMTP id 5b1f17b1804b1-45b517b008dmr280088605e9.16.1756376578953; Thu, 28 Aug 2025 03:22:58 -0700 (PDT) Date: Thu, 28 Aug 2025 12:22:24 +0200 In-Reply-To: <20250828102202.1849035-24-ardb+git@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250828102202.1849035-24-ardb+git@google.com> X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-Developer-Signature: v=1; a=openpgp-sha256; l=16970; i=ardb@kernel.org; h=from:subject; bh=PLSUCg+PgEUiduZ+jVfgXjQ0dHXfIsSW6/m8g0h4tas=; b=owGbwMvMwCVmkMcZplerG8N4Wi2JIWOD7uPNh06/XMWXJRd7rqJZNOPh4cAyj7RVbic5305sv lcRGVrdUcrCIMbFICumyCIw+++7nacnStU6z5KFmcPKBDKEgYtTACay5hXD//S82fMvCMb99Hth tFKgpMm4yemR8A8JM37tXe+/RjkqvWb4KxDqd0/LxEZM51KGeKO7+D6dqgNZEc/SmT13r77wMGw mNwA= X-Mailer: git-send-email 2.51.0.268.g9569e192d0-goog Message-ID: <20250828102202.1849035-45-ardb+git@google.com> Subject: [PATCH v7 21/22] x86/boot: Move startup code out of __head section From: Ard Biesheuvel To: linux-kernel@vger.kernel.org Cc: linux-efi@vger.kernel.org, x86@kernel.org, Ard Biesheuvel , Borislav Petkov , Ingo Molnar , Kevin Loughlin , Tom Lendacky , Josh Poimboeuf , Peter Zijlstra , Nikunj A Dadhania Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Ard Biesheuvel Move startup code out of the __head section, now that this no longer has a special significance. Move everything into .text or .init.text as appropriate, so that startup code is not kept around unnecessarily. Signed-off-by: Ard Biesheuvel --- arch/x86/boot/compressed/sev.c | 3 -- arch/x86/boot/startup/gdt_idt.c | 4 +-- arch/x86/boot/startup/map_kernel.c | 4 +-- arch/x86/boot/startup/sev-shared.c | 36 ++++++++++---------- arch/x86/boot/startup/sev-startup.c | 14 ++++---- arch/x86/boot/startup/sme.c | 26 +++++++------- arch/x86/include/asm/init.h | 6 ---- arch/x86/kernel/head_32.S | 2 +- arch/x86/kernel/head_64.S | 2 +- arch/x86/platform/pvh/head.S | 2 +- 10 files changed, 45 insertions(+), 54 deletions(-) diff --git a/arch/x86/boot/compressed/sev.c b/arch/x86/boot/compressed/sev.c index 6822eb4b9152..235e557fd10c 100644 --- a/arch/x86/boot/compressed/sev.c +++ b/arch/x86/boot/compressed/sev.c @@ -32,9 +32,6 @@ struct ghcb *boot_ghcb; #undef __init #define __init =20 -#undef __head -#define __head - #define __BOOT_COMPRESSED =20 u8 snp_vmpl; diff --git a/arch/x86/boot/startup/gdt_idt.c b/arch/x86/boot/startup/gdt_id= t.c index a3112a69b06a..d16102abdaec 100644 --- a/arch/x86/boot/startup/gdt_idt.c +++ b/arch/x86/boot/startup/gdt_idt.c @@ -24,7 +24,7 @@ static gate_desc bringup_idt_table[NUM_EXCEPTION_VECTORS] __page_aligned_d= ata; =20 /* This may run while still in the direct mapping */ -void __head startup_64_load_idt(void *vc_handler) +void startup_64_load_idt(void *vc_handler) { struct desc_ptr desc =3D { .address =3D (unsigned long)rip_rel_ptr(bringup_idt_table), @@ -46,7 +46,7 @@ void __head startup_64_load_idt(void *vc_handler) /* * Setup boot CPU state needed before kernel switches to virtual addresses. */ -void __head startup_64_setup_gdt_idt(void) +void __init startup_64_setup_gdt_idt(void) { struct gdt_page *gp =3D rip_rel_ptr((void *)(__force unsigned long)&gdt_p= age); void *handler =3D NULL; diff --git a/arch/x86/boot/startup/map_kernel.c b/arch/x86/boot/startup/map= _kernel.c index 332dbe6688c4..83ba98d61572 100644 --- a/arch/x86/boot/startup/map_kernel.c +++ b/arch/x86/boot/startup/map_kernel.c @@ -30,7 +30,7 @@ static inline bool check_la57_support(void) return true; } =20 -static unsigned long __head sme_postprocess_startup(struct boot_params *bp, +static unsigned long __init sme_postprocess_startup(struct boot_params *bp, pmdval_t *pmd, unsigned long p2v_offset) { @@ -84,7 +84,7 @@ static unsigned long __head sme_postprocess_startup(struc= t boot_params *bp, * the 1:1 mapping of memory. Kernel virtual addresses can be determined by * subtracting p2v_offset from the RIP-relative address. */ -unsigned long __head __startup_64(unsigned long p2v_offset, +unsigned long __init __startup_64(unsigned long p2v_offset, struct boot_params *bp) { pmd_t (*early_pgts)[PTRS_PER_PMD] =3D rip_rel_ptr(early_dynamic_pgts); diff --git a/arch/x86/boot/startup/sev-shared.c b/arch/x86/boot/startup/sev= -shared.c index d6d807da2e6e..8d2476e1ad3b 100644 --- a/arch/x86/boot/startup/sev-shared.c +++ b/arch/x86/boot/startup/sev-shared.c @@ -31,7 +31,7 @@ static u32 cpuid_std_range_max __ro_after_init; static u32 cpuid_hyp_range_max __ro_after_init; static u32 cpuid_ext_range_max __ro_after_init; =20 -void __head __noreturn +void __noreturn sev_es_terminate(unsigned int set, unsigned int reason) { u64 val =3D GHCB_MSR_TERM_REQ; @@ -50,7 +50,7 @@ sev_es_terminate(unsigned int set, unsigned int reason) /* * The hypervisor features are available from GHCB version 2 onward. */ -u64 get_hv_features(void) +u64 __init get_hv_features(void) { u64 val; =20 @@ -220,7 +220,7 @@ const struct snp_cpuid_table *snp_cpuid_get_table(void) * * Return: XSAVE area size on success, 0 otherwise. */ -static u32 __head snp_cpuid_calc_xsave_size(u64 xfeatures_en, bool compact= ed) +static u32 snp_cpuid_calc_xsave_size(u64 xfeatures_en, bool compacted) { const struct snp_cpuid_table *cpuid_table =3D snp_cpuid_get_table(); u64 xfeatures_found =3D 0; @@ -256,7 +256,7 @@ static u32 __head snp_cpuid_calc_xsave_size(u64 xfeatur= es_en, bool compacted) return xsave_size; } =20 -static bool __head +static bool snp_cpuid_get_validated_func(struct cpuid_leaf *leaf) { const struct snp_cpuid_table *cpuid_table =3D snp_cpuid_get_table(); @@ -298,7 +298,7 @@ static void snp_cpuid_hv_msr(void *ctx, struct cpuid_le= af *leaf) sev_es_terminate(SEV_TERM_SET_LINUX, GHCB_TERM_CPUID_HV); } =20 -static int __head +static int snp_cpuid_postprocess(void (*cpuid_fn)(void *ctx, struct cpuid_leaf *leaf), void *ctx, struct cpuid_leaf *leaf) { @@ -394,8 +394,8 @@ snp_cpuid_postprocess(void (*cpuid_fn)(void *ctx, struc= t cpuid_leaf *leaf), * Returns -EOPNOTSUPP if feature not enabled. Any other non-zero return v= alue * should be treated as fatal by caller. */ -int __head snp_cpuid(void (*cpuid_fn)(void *ctx, struct cpuid_leaf *leaf), - void *ctx, struct cpuid_leaf *leaf) +int snp_cpuid(void (*cpuid_fn)(void *ctx, struct cpuid_leaf *leaf), + void *ctx, struct cpuid_leaf *leaf) { const struct snp_cpuid_table *cpuid_table =3D snp_cpuid_get_table(); =20 @@ -437,7 +437,7 @@ int __head snp_cpuid(void (*cpuid_fn)(void *ctx, struct= cpuid_leaf *leaf), * page yet, so it only supports the MSR based communication with the * hypervisor and only the CPUID exit-code. */ -void __head do_vc_no_ghcb(struct pt_regs *regs, unsigned long exit_code) +void do_vc_no_ghcb(struct pt_regs *regs, unsigned long exit_code) { unsigned int subfn =3D lower_bits(regs->cx, 32); unsigned int fn =3D lower_bits(regs->ax, 32); @@ -513,7 +513,7 @@ struct cc_setup_data { * Search for a Confidential Computing blob passed in as a setup_data entry * via the Linux Boot Protocol. */ -static __head +static __init struct cc_blob_sev_info *find_cc_blob_setup_data(struct boot_params *bp) { struct cc_setup_data *sd =3D NULL; @@ -541,7 +541,7 @@ struct cc_blob_sev_info *find_cc_blob_setup_data(struct= boot_params *bp) * mapping needs to be updated in sync with all the changes to virtual mem= ory * layout and related mapping facilities throughout the boot process. */ -static void __head setup_cpuid_table(const struct cc_blob_sev_info *cc_inf= o) +static void __init setup_cpuid_table(const struct cc_blob_sev_info *cc_inf= o) { const struct snp_cpuid_table *cpuid_table_fw, *cpuid_table; int i; @@ -569,7 +569,7 @@ static void __head setup_cpuid_table(const struct cc_bl= ob_sev_info *cc_info) } } =20 -static int __head svsm_call_msr_protocol(struct svsm_call *call) +static int svsm_call_msr_protocol(struct svsm_call *call) { int ret; =20 @@ -580,8 +580,8 @@ static int __head svsm_call_msr_protocol(struct svsm_ca= ll *call) return ret; } =20 -static void __head svsm_pval_4k_page(unsigned long paddr, bool validate, - struct svsm_ca *caa, u64 caa_pa) +static void svsm_pval_4k_page(unsigned long paddr, bool validate, + struct svsm_ca *caa, u64 caa_pa) { struct svsm_pvalidate_call *pc; struct svsm_call call =3D {}; @@ -622,8 +622,8 @@ static void __head svsm_pval_4k_page(unsigned long padd= r, bool validate, native_local_irq_restore(flags); } =20 -static void __head pvalidate_4k_page(unsigned long vaddr, unsigned long pa= ddr, - bool validate, struct svsm_ca *caa, u64 caa_pa) +static void pvalidate_4k_page(unsigned long vaddr, unsigned long paddr, + bool validate, struct svsm_ca *caa, u64 caa_pa) { int ret; =20 @@ -643,8 +643,8 @@ static void __head pvalidate_4k_page(unsigned long vadd= r, unsigned long paddr, sev_evict_cache((void *)vaddr, 1); } =20 -static void __head __page_state_change(unsigned long vaddr, unsigned long = paddr, - const struct psc_desc *desc) +static void __page_state_change(unsigned long vaddr, unsigned long paddr, + const struct psc_desc *desc) { u64 val, msr; =20 @@ -682,7 +682,7 @@ static void __head __page_state_change(unsigned long va= ddr, unsigned long paddr, * Maintain the GPA of the SVSM Calling Area (CA) in order to utilize the = SVSM * services needed when not running in VMPL0. */ -static bool __head svsm_setup_ca(const struct cc_blob_sev_info *cc_info, +static bool __init svsm_setup_ca(const struct cc_blob_sev_info *cc_info, void *page) { struct snp_secrets_page *secrets_page; diff --git a/arch/x86/boot/startup/sev-startup.c b/arch/x86/boot/startup/se= v-startup.c index 9f4b4ca7deaa..39465a0ff4e5 100644 --- a/arch/x86/boot/startup/sev-startup.c +++ b/arch/x86/boot/startup/sev-startup.c @@ -44,7 +44,7 @@ /* Include code shared with pre-decompression boot stage */ #include "sev-shared.c" =20 -void __head +void __init early_set_pages_state(unsigned long vaddr, unsigned long paddr, unsigned long npages, const struct psc_desc *desc) { @@ -63,7 +63,7 @@ early_set_pages_state(unsigned long vaddr, unsigned long = paddr, } } =20 -void __head early_snp_set_memory_private(unsigned long vaddr, unsigned lon= g paddr, +void __init early_snp_set_memory_private(unsigned long vaddr, unsigned lon= g paddr, unsigned long npages) { struct psc_desc d =3D { @@ -88,7 +88,7 @@ void __head early_snp_set_memory_private(unsigned long va= ddr, unsigned long padd early_set_pages_state(vaddr, paddr, npages, &d); } =20 -void __head early_snp_set_memory_shared(unsigned long vaddr, unsigned long= paddr, +void __init early_snp_set_memory_shared(unsigned long vaddr, unsigned long= paddr, unsigned long npages) { struct psc_desc d =3D { @@ -123,7 +123,7 @@ void __head early_snp_set_memory_shared(unsigned long v= addr, unsigned long paddr * * Scan for the blob in that order. */ -static __head struct cc_blob_sev_info *find_cc_blob(struct boot_params *bp) +static struct cc_blob_sev_info *__init find_cc_blob(struct boot_params *bp) { struct cc_blob_sev_info *cc_info; =20 @@ -149,7 +149,7 @@ static __head struct cc_blob_sev_info *find_cc_blob(str= uct boot_params *bp) return cc_info; } =20 -static __head void svsm_setup(struct cc_blob_sev_info *cc_info) +static void __init svsm_setup(struct cc_blob_sev_info *cc_info) { struct snp_secrets_page *secrets =3D (void *)cc_info->secrets_phys; struct svsm_call call =3D {}; @@ -190,7 +190,7 @@ static __head void svsm_setup(struct cc_blob_sev_info *= cc_info) boot_svsm_caa_pa =3D pa; } =20 -bool __head snp_init(struct boot_params *bp) +bool __init snp_init(struct boot_params *bp) { struct cc_blob_sev_info *cc_info; =20 @@ -219,7 +219,7 @@ bool __head snp_init(struct boot_params *bp) return true; } =20 -void __head __noreturn snp_abort(void) +void __init __noreturn snp_abort(void) { sev_es_terminate(SEV_TERM_SET_GEN, GHCB_SNP_UNSUPPORTED); } diff --git a/arch/x86/boot/startup/sme.c b/arch/x86/boot/startup/sme.c index eb6a758ba660..39e7e9d18974 100644 --- a/arch/x86/boot/startup/sme.c +++ b/arch/x86/boot/startup/sme.c @@ -91,7 +91,7 @@ struct sme_populate_pgd_data { */ static char sme_workarea[2 * PMD_SIZE] __section(".init.scratch"); =20 -static void __head sme_clear_pgd(struct sme_populate_pgd_data *ppd) +static void __init sme_clear_pgd(struct sme_populate_pgd_data *ppd) { unsigned long pgd_start, pgd_end, pgd_size; pgd_t *pgd_p; @@ -106,7 +106,7 @@ static void __head sme_clear_pgd(struct sme_populate_pg= d_data *ppd) memset(pgd_p, 0, pgd_size); } =20 -static pud_t __head *sme_prepare_pgd(struct sme_populate_pgd_data *ppd) +static pud_t __init *sme_prepare_pgd(struct sme_populate_pgd_data *ppd) { pgd_t *pgd; p4d_t *p4d; @@ -143,7 +143,7 @@ static pud_t __head *sme_prepare_pgd(struct sme_populat= e_pgd_data *ppd) return pud; } =20 -static void __head sme_populate_pgd_large(struct sme_populate_pgd_data *pp= d) +static void __init sme_populate_pgd_large(struct sme_populate_pgd_data *pp= d) { pud_t *pud; pmd_t *pmd; @@ -159,7 +159,7 @@ static void __head sme_populate_pgd_large(struct sme_po= pulate_pgd_data *ppd) set_pmd(pmd, __pmd(ppd->paddr | ppd->pmd_flags)); } =20 -static void __head sme_populate_pgd(struct sme_populate_pgd_data *ppd) +static void __init sme_populate_pgd(struct sme_populate_pgd_data *ppd) { pud_t *pud; pmd_t *pmd; @@ -185,7 +185,7 @@ static void __head sme_populate_pgd(struct sme_populate= _pgd_data *ppd) set_pte(pte, __pte(ppd->paddr | ppd->pte_flags)); } =20 -static void __head __sme_map_range_pmd(struct sme_populate_pgd_data *ppd) +static void __init __sme_map_range_pmd(struct sme_populate_pgd_data *ppd) { while (ppd->vaddr < ppd->vaddr_end) { sme_populate_pgd_large(ppd); @@ -195,7 +195,7 @@ static void __head __sme_map_range_pmd(struct sme_popul= ate_pgd_data *ppd) } } =20 -static void __head __sme_map_range_pte(struct sme_populate_pgd_data *ppd) +static void __init __sme_map_range_pte(struct sme_populate_pgd_data *ppd) { while (ppd->vaddr < ppd->vaddr_end) { sme_populate_pgd(ppd); @@ -205,7 +205,7 @@ static void __head __sme_map_range_pte(struct sme_popul= ate_pgd_data *ppd) } } =20 -static void __head __sme_map_range(struct sme_populate_pgd_data *ppd, +static void __init __sme_map_range(struct sme_populate_pgd_data *ppd, pmdval_t pmd_flags, pteval_t pte_flags) { unsigned long vaddr_end; @@ -229,22 +229,22 @@ static void __head __sme_map_range(struct sme_populat= e_pgd_data *ppd, __sme_map_range_pte(ppd); } =20 -static void __head sme_map_range_encrypted(struct sme_populate_pgd_data *p= pd) +static void __init sme_map_range_encrypted(struct sme_populate_pgd_data *p= pd) { __sme_map_range(ppd, PMD_FLAGS_ENC, PTE_FLAGS_ENC); } =20 -static void __head sme_map_range_decrypted(struct sme_populate_pgd_data *p= pd) +static void __init sme_map_range_decrypted(struct sme_populate_pgd_data *p= pd) { __sme_map_range(ppd, PMD_FLAGS_DEC, PTE_FLAGS_DEC); } =20 -static void __head sme_map_range_decrypted_wp(struct sme_populate_pgd_data= *ppd) +static void __init sme_map_range_decrypted_wp(struct sme_populate_pgd_data= *ppd) { __sme_map_range(ppd, PMD_FLAGS_DEC_WP, PTE_FLAGS_DEC_WP); } =20 -static unsigned long __head sme_pgtable_calc(unsigned long len) +static unsigned long __init sme_pgtable_calc(unsigned long len) { unsigned long entries =3D 0, tables =3D 0; =20 @@ -281,7 +281,7 @@ static unsigned long __head sme_pgtable_calc(unsigned l= ong len) return entries + tables; } =20 -void __head sme_encrypt_kernel(struct boot_params *bp) +void __init sme_encrypt_kernel(struct boot_params *bp) { unsigned long workarea_start, workarea_end, workarea_len; unsigned long execute_start, execute_end, execute_len; @@ -485,7 +485,7 @@ void __head sme_encrypt_kernel(struct boot_params *bp) native_write_cr3(__native_read_cr3()); } =20 -void __head sme_enable(struct boot_params *bp) +void __init sme_enable(struct boot_params *bp) { unsigned int eax, ebx, ecx, edx; unsigned long feature_mask; diff --git a/arch/x86/include/asm/init.h b/arch/x86/include/asm/init.h index 5a68e9db6518..01ccdd168df0 100644 --- a/arch/x86/include/asm/init.h +++ b/arch/x86/include/asm/init.h @@ -2,12 +2,6 @@ #ifndef _ASM_X86_INIT_H #define _ASM_X86_INIT_H =20 -#if defined(CONFIG_CC_IS_CLANG) && CONFIG_CLANG_VERSION < 170000 -#define __head __section(".head.text") __no_sanitize_undefined __no_stack_= protector -#else -#define __head __section(".head.text") __no_sanitize_undefined __no_kstack= _erase -#endif - struct x86_mapping_info { void *(*alloc_pgt_page)(void *); /* allocate buf for page table */ void (*free_pgt_page)(void *, void *); /* free buf for page table */ diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 76743dfad6ab..437effb1ef03 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -61,7 +61,7 @@ RESERVE_BRK(pagetables, INIT_MAP_SIZE) * any particular GDT layout, because we load our own as soon as we * can. */ -__HEAD + __INIT SYM_CODE_START(startup_32) movl pa(initial_stack),%ecx =09 diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index d219963ecb60..21816b48537c 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -33,7 +33,7 @@ * because we need identity-mapped pages. */ =20 - __HEAD + __INIT .code64 SYM_CODE_START_NOALIGN(startup_64) UNWIND_HINT_END_OF_STACK diff --git a/arch/x86/platform/pvh/head.S b/arch/x86/platform/pvh/head.S index 1d78e5631bb8..344030c1a81d 100644 --- a/arch/x86/platform/pvh/head.S +++ b/arch/x86/platform/pvh/head.S @@ -24,7 +24,7 @@ #include #include =20 - __HEAD + __INIT =20 /* * Entry point for PVH guests. --=20 2.51.0.268.g9569e192d0-goog