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Thu, 1 Sep 2022 13:48:42 +0200 X-Authentication-Warning: PO20335.IDSI0.si.c-s.fr: chleroy set sender to christophe.leroy@csgroup.eu using -f From: Christophe Leroy To: Michael Ellerman , Nicholas Piggin , sv@linux.ibm.com, bgray@linux.ibm.com, agust@denx.de, jpoimboe@kernel.org, peterz@infradead.org, jbaron@akamai.com, rostedt@goodmis.org, ardb@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com Subject: [PATCH v3 0/6] Implement inline static calls on PPC32 - v3 Date: Thu, 1 Sep 2022 13:48:19 +0200 Message-Id: X-Mailer: git-send-email 2.37.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1662032901; l=1870; s=20211009; h=from:subject:message-id; bh=GAgDRyI5Iv4v6NxY6e0q7Pc95r863rGYKNlkTCV4Iz4=; b=xIoTdQATVlMxl+qo3b8kowa0Ce1JnaXHUKOLiVoHMjZhqAH98kCIcW/VrJESaDkHweU7OcGCCuQ/ ZHZ5QlLlAZhSMhFyRCUfG3ew9RKhh2g10uAM5ujyxo71l437f4Kv X-Developer-Key: i=christophe.leroy@csgroup.eu; a=ed25519; pk=HIzTzUj91asvincQGOFx6+ZF5AoUuP9GdOtQChs7Mm0= X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: chenzhongjin@huawei.com, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" This series applies on top of the series v2 "objtool: Enable and implement --mcount option on powerpc" [1] A few modifications are done to core parts to enable powerpc implementation: - R_X86_64_PC32 is abstracted to R_REL32 so that it can then be redefined as R_PPC_REL32. - A call to static_call_init() is added to start_kernel() to avoid every architecture to have to call it - Trampoline address is provided to arch_static_call_transform() even when setting a site to fallback on a call to the trampoline when the target is too far. [1] https://lore.kernel.org/all/20220829055223.24767-8-sv@linux.ibm.com/T/ This version of the series includes a preliminary patch (patch 1) that should be squashed into Sathvika's series. Christophe Leroy (6): Fixup for "objtool/powerpc: Add --mcount specific implementation" objtool: Add architecture specific R_REL32 macro init: Call static_call_init() from start_kernel() static_call_inline: Provide trampoline address when updating sites powerpc: Prepare arch_static_call_transform() for supporting inline static calls powerpc/static_call: Implement inline static calls arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/static_call.h | 2 + arch/powerpc/kernel/static_call.c | 58 ++++++++++++++----- arch/x86/kernel/static_call.c | 2 +- init/main.c | 1 + kernel/static_call_inline.c | 2 +- tools/objtool/arch/powerpc/decode.c | 39 +++++++++---- tools/objtool/arch/powerpc/include/arch/elf.h | 1 + tools/objtool/arch/x86/include/arch/elf.h | 1 + tools/objtool/check.c | 10 ++-- tools/objtool/orc_gen.c | 2 +- 11 files changed, 85 insertions(+), 34 deletions(-)