From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Martin Subject: [PATCH v5 05/30] arm64: efi: Add missing Kconfig dependency on KERNEL_MODE_NEON Date: Tue, 31 Oct 2017 15:50:57 +0000 Message-ID: <1509465082-30427-6-git-send-email-Dave.Martin@arm.com> References: <1509465082-30427-1-git-send-email-Dave.Martin@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1509465082-30427-1-git-send-email-Dave.Martin@arm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: linux-arm-kernel@lists.infradead.org Cc: linux-arch@vger.kernel.org, Okamoto Takayuki , libc-alpha@sourceware.org, Ard Biesheuvel , Szabolcs Nagy , Catalin Marinas , Will Deacon , kvmarm@lists.cs.columbia.edu List-Id: linux-arch.vger.kernel.org VGhlIEVGSSBydW50aW1lIHNlcnZpY2VzIEFCSSBwZXJtaXRzIGNhbGxzIHRvIEVGSSB0byBjbG9i YmVyCmNlcnRhaW4gRlBTSU1EL05FT04gcmVnaXN0ZXJzLCBhcyBwZXIgdGhlIEFBcmNoNjQgcHJv Y2VkdXJlIGNhbGwKc3RhbmRhcmQuCgpTYXZpbmcvcmVzdG9yaW5nIHRoZSBjbG9iYmVyZWQgcmVn aXN0ZXJzIGFyb3VuZCBzdWNoIGNhbGxzIG5lZWRzCktFUk5FTF9NT0RFX05FT04sIGJ1dCB0aGUg ZGVwZW5kZW5jeSBpcyBtaXNzaW5nIGZyb20gS2NvbmZpZy4KClRoaXMgcGF0Y2ggYWRkcyB0aGUg bWlzc2luZyBkZXBlbmRlbmN5LgoKVGhpcyB3aWxsIGFpZCBiaXNlY3Rpb24gb2YgdGhlIHBhdGNo ZXMgaW1wbGVtZW50aW5nIHN1cHBvcnQgZm9yIHRoZQpBUk0gU2NhbGFibGUgVmVjdG9yIEV4dGVu c2lvbiAoU1ZFKS4KClNpZ25lZC1vZmYtYnk6IERhdmUgTWFydGluIDxEYXZlLk1hcnRpbkBhcm0u Y29tPgpSZXZpZXdlZC1ieTogQWxleCBCZW5uw6llIDxhbGV4LmJlbm5lZUBsaW5hcm8ub3JnPgpB Y2tlZC1ieTogQ2F0YWxpbiBNYXJpbmFzIDxjYXRhbGluLm1hcmluYXNAYXJtLmNvbT4KQ2M6IEFy ZCBCaWVzaGV1dmVsIDxhcmQuYmllc2hldXZlbEBsaW5hcm8ub3JnPgotLS0KIGFyY2gvYXJtNjQv S2NvbmZpZyB8IDEgKwogMSBmaWxlIGNoYW5nZWQsIDEgaW5zZXJ0aW9uKCspCgpkaWZmIC0tZ2l0 IGEvYXJjaC9hcm02NC9LY29uZmlnIGIvYXJjaC9hcm02NC9LY29uZmlnCmluZGV4IDA1YWE1OTIu LjVjZmI3OWQgMTAwNjQ0Ci0tLSBhL2FyY2gvYXJtNjQvS2NvbmZpZworKysgYi9hcmNoL2FybTY0 L0tjb25maWcKQEAgLTEwNjQsNiArMTA2NCw3IEBAIGNvbmZpZyBFRklfU1RVQgogY29uZmlnIEVG SQogCWJvb2wgIlVFRkkgcnVudGltZSBzdXBwb3J0IgogCWRlcGVuZHMgb24gT0YgJiYgIUNQVV9C SUdfRU5ESUFOCisJZGVwZW5kcyBvbiBLRVJORUxfTU9ERV9ORU9OCiAJc2VsZWN0IExJQkZEVAog CXNlbGVjdCBVQ1MyX1NUUklORwogCXNlbGVjdCBFRklfUEFSQU1TX0ZST01fRkRUCi0tIAoyLjEu NAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18Ka3ZtYXJt IG1haWxpbmcgbGlzdAprdm1hcm1AbGlzdHMuY3MuY29sdW1iaWEuZWR1Cmh0dHBzOi8vbGlzdHMu Y3MuY29sdW1iaWEuZWR1L21haWxtYW4vbGlzdGluZm8va3ZtYXJtCg== From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from foss.arm.com ([217.140.101.70]:37542 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753650AbdJaPvl (ORCPT ); Tue, 31 Oct 2017 11:51:41 -0400 From: Dave Martin Subject: [PATCH v5 05/30] arm64: efi: Add missing Kconfig dependency on KERNEL_MODE_NEON Date: Tue, 31 Oct 2017 15:50:57 +0000 Message-ID: <1509465082-30427-6-git-send-email-Dave.Martin@arm.com> In-Reply-To: <1509465082-30427-1-git-send-email-Dave.Martin@arm.com> References: <1509465082-30427-1-git-send-email-Dave.Martin@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-arm-kernel@lists.infradead.org Cc: Catalin Marinas , Will Deacon , Ard Biesheuvel , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Szabolcs Nagy , Okamoto Takayuki , kvmarm@lists.cs.columbia.edu, libc-alpha@sourceware.org, linux-arch@vger.kernel.org Message-ID: <20171031155057.dyZaKtMv3bk-Vbul2uFe0SDNkf2qjktbzuCSmFWQjxs@z> The EFI runtime services ABI permits calls to EFI to clobber certain FPSIMD/NEON registers, as per the AArch64 procedure call standard. Saving/restoring the clobbered registers around such calls needs KERNEL_MODE_NEON, but the dependency is missing from Kconfig. This patch adds the missing dependency. This will aid bisection of the patches implementing support for the ARM Scalable Vector Extension (SVE). Signed-off-by: Dave Martin Reviewed-by: Alex Bennée Acked-by: Catalin Marinas Cc: Ard Biesheuvel --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 05aa592..5cfb79d 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1064,6 +1064,7 @@ config EFI_STUB config EFI bool "UEFI runtime support" depends on OF && !CPU_BIG_ENDIAN + depends on KERNEL_MODE_NEON select LIBFDT select UCS2_STRING select EFI_PARAMS_FROM_FDT -- 2.1.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave.Martin@arm.com (Dave Martin) Date: Tue, 31 Oct 2017 15:50:57 +0000 Subject: [PATCH v5 05/30] arm64: efi: Add missing Kconfig dependency on KERNEL_MODE_NEON In-Reply-To: <1509465082-30427-1-git-send-email-Dave.Martin@arm.com> References: <1509465082-30427-1-git-send-email-Dave.Martin@arm.com> Message-ID: <1509465082-30427-6-git-send-email-Dave.Martin@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The EFI runtime services ABI permits calls to EFI to clobber certain FPSIMD/NEON registers, as per the AArch64 procedure call standard. Saving/restoring the clobbered registers around such calls needs KERNEL_MODE_NEON, but the dependency is missing from Kconfig. This patch adds the missing dependency. This will aid bisection of the patches implementing support for the ARM Scalable Vector Extension (SVE). Signed-off-by: Dave Martin Reviewed-by: Alex Benn?e Acked-by: Catalin Marinas Cc: Ard Biesheuvel --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 05aa592..5cfb79d 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1064,6 +1064,7 @@ config EFI_STUB config EFI bool "UEFI runtime support" depends on OF && !CPU_BIG_ENDIAN + depends on KERNEL_MODE_NEON select LIBFDT select UCS2_STRING select EFI_PARAMS_FROM_FDT -- 2.1.4