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Sat, 11 Feb 2023 21:15:31 -0500 (EST) From: Samuel Holland To: Heiko Stuebner , Jisheng Zhang , Palmer Dabbelt , linux-riscv@lists.infradead.org Cc: Samuel Holland , Andrew Jones , Christoph Muellner , Conor Dooley , Guo Ren , Heiko Stuebner , Nathan Chancellor , linux-kernel@vger.kernel.org Subject: [PATCH 1/2] riscv: Fix early alternative patching Date: Sat, 11 Feb 2023 20:15:32 -0600 Message-Id: <20230212021534.59121-2-samuel@sholland.org> X-Mailer: git-send-email 2.37.4 In-Reply-To: <20230212021534.59121-1-samuel@sholland.org> References: <20230212021534.59121-1-samuel@sholland.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230211_181543_112516_DFCF5D91 X-CRM114-Status: UNSURE ( 8.83 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Now that the text to patch is located using a relative offset from the alternative entry, the text address should be computed without applying the kernel mapping offset, both before and after VM setup. Fixes: 8d23e94a4433 ("riscv: switch to relative alternative entries") Signed-off-by: Samuel Holland Reviewed-by: Conor Dooley Reviewed-by: Guo Ren Reviewed-by: Jisheng Zhang --- arch/riscv/errata/thead/errata.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/riscv/errata/thead/errata.c b/arch/riscv/errata/thead/errata.c index c0bea5c94128..1dd90a5f86f0 100644 --- a/arch/riscv/errata/thead/errata.c +++ b/arch/riscv/errata/thead/errata.c @@ -102,9 +102,7 @@ void __init_or_module thead_errata_patch_func(struct alt_entry *begin, struct al /* On vm-alternatives, the mmu isn't running yet */ if (stage == RISCV_ALTERNATIVES_EARLY_BOOT) - memcpy((void *)__pa_symbol(oldptr), - (void *)__pa_symbol(altptr), - alt->alt_len); + memcpy(oldptr, altptr, alt->alt_len); else patch_text_nosync(oldptr, altptr, alt->alt_len); }