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Peter Anvin" , x86@kernel.org, Allison Randal , Enrico Weigelt , Greg Kroah-Hartman , Jiri Slaby , linux-kernel@vger.kernel.org Subject: [PATCH v11 03/11] x86: relocate_kernel - Adapt assembly for PIE support Date: Thu, 27 Feb 2020 16:00:48 -0800 Message-Id: <20200228000105.165012-4-thgarnie@chromium.org> X-Mailer: git-send-email 2.25.1.481.gfbce0eb801-goog In-Reply-To: <20200228000105.165012-1-thgarnie@chromium.org> References: <20200228000105.165012-1-thgarnie@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Change the assembly code to use only absolute references of symbols for the kernel to be PIE compatible. Signed-off-by: Thomas Garnier Reviewed-by: Kees Cook --- arch/x86/kernel/relocate_kernel_64.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/relocate_kernel_64.S b/arch/x86/kernel/relocate_kernel_64.S index ef3ba99068d3..c294339df5ef 100644 --- a/arch/x86/kernel/relocate_kernel_64.S +++ b/arch/x86/kernel/relocate_kernel_64.S @@ -206,7 +206,7 @@ SYM_CODE_START_LOCAL_NOALIGN(identity_mapped) movq %rax, %cr3 lea PAGE_SIZE(%r8), %rsp call swap_pages - movq $virtual_mapped, %rax + movabsq $virtual_mapped, %rax pushq %rax ret SYM_CODE_END(identity_mapped) -- 2.25.1.481.gfbce0eb801-goog