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Mon, 12 May 2025 12:12:01 -0700 (PDT) Date: Mon, 12 May 2025 21:08:49 +0200 In-Reply-To: <20250512190834.332684-23-ardb+git@google.com> Precedence: bulk X-Mailing-List: linux-efi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250512190834.332684-23-ardb+git@google.com> X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-Developer-Signature: v=1; a=openpgp-sha256; l=1036; i=ardb@kernel.org; h=from:subject; bh=Dg3l458uD80s7OT/oBv3zq8dwv/NJq7U/qhuTc4s+G0=; b=owGbwMvMwCFmkMcZplerG8N4Wi2JIUPJ3V+2sWte77OvKbdeR09ZJzFxtt2D7waXneIrVtyOf L5G+RNvRykLgxgHg6yYIovA7L/vdp6eKFXrPEsWZg4rE8gQBi5OAZjIXyWG/7W3S2ctnjy94q7+ kv+v7ly8ZbBuib1KP8Mht+4reROUBDIY/heJhQnbyH2Q45iyMf7tz7V3bFsW6efZid77nD25YMe aA9wA X-Mailer: git-send-email 2.49.0.1045.g170613ef41-goog Message-ID: <20250512190834.332684-37-ardb+git@google.com> Subject: [RFT PATCH v3 14/21] x86/boot: Provide PIC aliases for 5-level paging related constants From: Ard Biesheuvel To: linux-kernel@vger.kernel.org Cc: linux-efi@vger.kernel.org, x86@kernel.org, Ard Biesheuvel , Borislav Petkov , Ingo Molnar , Dionna Amalie Glaze , Kevin Loughlin , Tom Lendacky From: Ard Biesheuvel For the time being, provide PIC aliases for the global variables related to 5-level paging. Some or all of these are in the process of being removed, but currently, they are still assigned by the startup code. Signed-off-by: Ard Biesheuvel --- arch/x86/kernel/head64.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 510fb41f55fc..8c69cea84297 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -53,10 +53,13 @@ pmdval_t early_pmd_flags = __PAGE_KERNEL_LARGE & ~(_PAGE_GLOBAL | _PAGE_NX); #ifdef CONFIG_X86_5LEVEL unsigned int __pgtable_l5_enabled __ro_after_init; +SYM_PIC_ALIAS(__pgtable_l5_enabled); unsigned int pgdir_shift __ro_after_init = 39; EXPORT_SYMBOL(pgdir_shift); +SYM_PIC_ALIAS(pgdir_shift); unsigned int ptrs_per_p4d __ro_after_init = 1; EXPORT_SYMBOL(ptrs_per_p4d); +SYM_PIC_ALIAS(ptrs_per_p4d); #endif #ifdef CONFIG_DYNAMIC_MEMORY_LAYOUT