From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from ozlabs.org ([2401:3900:2:1::2]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mQInV-007hLs-8L for kexec@lists.infradead.org; Wed, 15 Sep 2021 00:29:10 +0000 From: Michael Ellerman Subject: Re: [PATCH v3 4/8] powerpc/pseries/svm: Add a powerpc version of cc_platform_has() In-Reply-To: References: <9d4fc3f8ea7b325aaa1879beab1286876f45d450.1631141919.git.thomas.lendacky@amd.com> Date: Wed, 15 Sep 2021 10:28:59 +1000 Message-ID: <87lf3yk7g4.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Borislav Petkov Cc: Tom Lendacky , linux-kernel@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-graphics-maintainer@vmware.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org, Brijesh Singh , Joerg Roedel , Andi Kleen , Sathyanarayanan Kuppuswamy , Tianyu Lan , Christoph Hellwig , Benjamin Herrenschmidt , Paul Mackerras Borislav Petkov writes: > On Wed, Sep 08, 2021 at 05:58:35PM -0500, Tom Lendacky wrote: >> Introduce a powerpc version of the cc_platform_has() function. This will >> be used to replace the powerpc mem_encrypt_active() implementation, so >> the implementation will initially only support the CC_ATTR_MEM_ENCRYPT >> attribute. >> >> Cc: Michael Ellerman >> Cc: Benjamin Herrenschmidt >> Cc: Paul Mackerras >> Signed-off-by: Tom Lendacky >> --- >> arch/powerpc/platforms/pseries/Kconfig | 1 + >> arch/powerpc/platforms/pseries/Makefile | 2 ++ >> arch/powerpc/platforms/pseries/cc_platform.c | 26 ++++++++++++++++++++ >> 3 files changed, 29 insertions(+) >> create mode 100644 arch/powerpc/platforms/pseries/cc_platform.c > > Michael, > > can I get an ACK for the ppc bits to carry them through the tip tree > pls? Yeah. I don't love it, a new C file and an out-of-line call to then call back to a static inline that for most configuration will return false ... but whatever :) Acked-by: Michael Ellerman (powerpc) > Btw, on a related note, cross-compiling this throws the following error here: > > $ make CROSS_COMPILE=/home/share/src/crosstool/gcc-9.4.0-nolibc/powerpc64-linux/bin/powerpc64-linux- V=1 ARCH=powerpc > > ... > > /home/share/src/crosstool/gcc-9.4.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc -Wp,-MD,arch/powerpc/boot/.crt0.o.d -D__ASSEMBLY__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -O2 -msoft-float -mno-altivec -mno-vsx -pipe -fomit-frame-pointer -fno-builtin -fPIC -nostdinc -include ./include/linux/compiler_attributes.h -I./arch/powerpc/include -I./arch/powerpc/include/generated -I./include -I./arch/powerpc/include/uapi -I./arch/powerpc/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/compiler-version.h -include ./include/linux/kconfig.h -m32 -isystem /home/share/src/crosstool/gcc-9.4.0-nolibc/powerpc64-linux/bin/../lib/gcc/powerpc64-linux/9.4.0/include -mbig-endian -nostdinc -c -o arch/powerpc/boot/crt0.o arch/powerpc/boot/crt0.S > In file included from : > ././include/linux/compiler_attributes.h:62:5: warning: "__has_attribute" is not defined, evaluates to 0 [-Wundef] > 62 | #if __has_attribute(__assume_aligned__) > | ^~~~~~~~~~~~~~~ > ././include/linux/compiler_attributes.h:62:20: error: missing binary operator before token "(" > 62 | #if __has_attribute(__assume_aligned__) > | ^ > ././include/linux/compiler_attributes.h:88:5: warning: "__has_attribute" is not defined, evaluates to 0 [-Wundef] > 88 | #if __has_attribute(__copy__) > | ^~~~~~~~~~~~~~~ > ... > > Known issue? Yeah, fixed in mainline today, thanks for trying to cross compile :) cheers _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec