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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=SBPjjox/K0nQBp9p/UReaX06mOCKZA5VG5oKrHSRp3U=; b=f7DcQmiqtqUFrJ14jjkBNR7st1xcTOhLTTfadtFchM10EHHZSp94Ru70H7Xqm1fmXM vaH5I/ltdX8GS6I3mATwSry0BvRbEQju0U0se+7KEXA3Avg8PbliFL8oQddnNy8TduMz U/fUnD9AF9t0rL3W7jtizgF/YmMnkvb6v5gPOFoosKr8EEKvHDPXhOZ6NViOtw/WLAd2 X76ZxPpGgVJvOqscYao/bqRA+GHhzWr+cC7QJ8/Mkc7KhdZe/1LmAf3PqDbBvUTgSbnX qI3+8XaxF+mj3bss93AovOUta29xSYtzaX6r+z2rBdl5ZFCecsEygpwosF48BpimMgp7 tOGA== X-Gm-Message-State: APjAAAXxLO/WRI9z3X4wJizIMMjqJwxsXq6FVSXD4GSYaD97xyMZoUCw Q6qYSjSIVCTZmflKIAOrmO2CsNDrod5f9wPdJ7A= X-Google-Smtp-Source: APXvYqwMtHOZMoB23ssF7JNCZzaMw12LgXJO1Cx/fyHqurm8wqZn755XqIGbFFeB1mv3cEwMcIBCpgy6byzfZbrNKqg= X-Received: by 2002:a63:6483:: with SMTP id y125mr5619534pgb.444.1572998212169; Tue, 05 Nov 2019 15:56:52 -0800 (PST) Date: Tue, 5 Nov 2019 15:56:07 -0800 In-Reply-To: <20191105235608.107702-1-samitolvanen@google.com> Message-Id: <20191105235608.107702-14-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20191105235608.107702-1-samitolvanen@google.com> X-Mailer: git-send-email 2.24.0.rc1.363.gb1bccd3e3d-goog Subject: [PATCH v5 13/14] arm64: disable SCS for hypervisor code From: Sami Tolvanen To: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191105_155654_370569_854980E7 X-CRM114-Status: UNSURE ( 9.57 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Kees Cook , Jann Horn , Masahiro Yamada , Marc Zyngier , kernel-hardening@lists.openwall.com, Nick Desaulniers , linux-kernel@vger.kernel.org, Miguel Ojeda , clang-built-linux@googlegroups.com, Sami Tolvanen , Laura Abbott , Dave Martin , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Filter out CC_FLAGS_SCS for code that runs at a different exception level. Suggested-by: Steven Rostedt (VMware) Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook --- arch/arm64/kvm/hyp/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index ea710f674cb6..17ea3da325e9 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -28,3 +28,6 @@ GCOV_PROFILE := n KASAN_SANITIZE := n UBSAN_SANITIZE := n KCOV_INSTRUMENT := n + +# remove the SCS flags from all objects in this directory +KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS)) -- 2.24.0.rc1.363.gb1bccd3e3d-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel