From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Shuah Khan <shuah@kernel.org>
Cc: Alan Hayward <alan.hayward@arm.com>,
Luis Machado <luis.machado@arm.com>,
Salil Akerkar <Salil.Akerkar@arm.com>,
Basant Kumar Dwivedi <Basant.KumarDwivedi@arm.com>,
Szabolcs Nagy <szabolcs.nagy@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org, Mark Brown <broonie@kernel.org>
Subject: [PATCH v1 02/38] arm64/sve: Remove sve_load_from_fpsimd_state()
Date: Thu, 30 Sep 2021 19:11:08 +0100 [thread overview]
Message-ID: <20210930181144.10029-3-broonie@kernel.org> (raw)
In-Reply-To: <20210930181144.10029-1-broonie@kernel.org>
Following optimisations of the SVE register handling we no longer load the
SVE state from a saved copy of the FPSIMD registers, we convert directly
in registers or from one saved state to another. Remove the function so we
don't need to update it during further refactoring.
Signed-off-by: Mark Brown <broonie@kernel.org>
---
arch/arm64/include/asm/fpsimd.h | 2 --
arch/arm64/kernel/entry-fpsimd.S | 16 ----------------
2 files changed, 18 deletions(-)
diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h
index 9a62884183e5..e0e30567b80f 100644
--- a/arch/arm64/include/asm/fpsimd.h
+++ b/arch/arm64/include/asm/fpsimd.h
@@ -69,8 +69,6 @@ extern void sve_save_state(void *state, u32 *pfpsr);
extern void sve_load_state(void const *state, u32 const *pfpsr,
unsigned long vq_minus_1);
extern void sve_flush_live(unsigned long vq_minus_1);
-extern void sve_load_from_fpsimd_state(struct user_fpsimd_state const *state,
- unsigned long vq_minus_1);
extern unsigned int sve_get_vl(void);
extern void sve_set_vq(unsigned long vq_minus_1);
diff --git a/arch/arm64/kernel/entry-fpsimd.S b/arch/arm64/kernel/entry-fpsimd.S
index 196e921f61de..afbf7dc47e1d 100644
--- a/arch/arm64/kernel/entry-fpsimd.S
+++ b/arch/arm64/kernel/entry-fpsimd.S
@@ -66,22 +66,6 @@ SYM_FUNC_START(sve_set_vq)
ret
SYM_FUNC_END(sve_set_vq)
-/*
- * Load SVE state from FPSIMD state.
- *
- * x0 = pointer to struct fpsimd_state
- * x1 = VQ - 1
- *
- * Each SVE vector will be loaded with the first 128-bits taken from FPSIMD
- * and the rest zeroed. All the other SVE registers will be zeroed.
- */
-SYM_FUNC_START(sve_load_from_fpsimd_state)
- sve_load_vq x1, x2, x3
- fpsimd_restore x0, 8
- sve_flush_p_ffr
- ret
-SYM_FUNC_END(sve_load_from_fpsimd_state)
-
/*
* Zero all SVE registers but the first 128-bits of each vector
*
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Shuah Khan <shuah@kernel.org>
Cc: Alan Hayward <alan.hayward@arm.com>,
Luis Machado <luis.machado@arm.com>,
Salil Akerkar <Salil.Akerkar@arm.com>,
Basant Kumar Dwivedi <Basant.KumarDwivedi@arm.com>,
Szabolcs Nagy <szabolcs.nagy@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org, Mark Brown <broonie@kernel.org>
Subject: [PATCH v1 02/38] arm64/sve: Remove sve_load_from_fpsimd_state()
Date: Thu, 30 Sep 2021 19:11:08 +0100 [thread overview]
Message-ID: <20210930181144.10029-3-broonie@kernel.org> (raw)
In-Reply-To: <20210930181144.10029-1-broonie@kernel.org>
Following optimisations of the SVE register handling we no longer load the
SVE state from a saved copy of the FPSIMD registers, we convert directly
in registers or from one saved state to another. Remove the function so we
don't need to update it during further refactoring.
Signed-off-by: Mark Brown <broonie@kernel.org>
---
arch/arm64/include/asm/fpsimd.h | 2 --
arch/arm64/kernel/entry-fpsimd.S | 16 ----------------
2 files changed, 18 deletions(-)
diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h
index 9a62884183e5..e0e30567b80f 100644
--- a/arch/arm64/include/asm/fpsimd.h
+++ b/arch/arm64/include/asm/fpsimd.h
@@ -69,8 +69,6 @@ extern void sve_save_state(void *state, u32 *pfpsr);
extern void sve_load_state(void const *state, u32 const *pfpsr,
unsigned long vq_minus_1);
extern void sve_flush_live(unsigned long vq_minus_1);
-extern void sve_load_from_fpsimd_state(struct user_fpsimd_state const *state,
- unsigned long vq_minus_1);
extern unsigned int sve_get_vl(void);
extern void sve_set_vq(unsigned long vq_minus_1);
diff --git a/arch/arm64/kernel/entry-fpsimd.S b/arch/arm64/kernel/entry-fpsimd.S
index 196e921f61de..afbf7dc47e1d 100644
--- a/arch/arm64/kernel/entry-fpsimd.S
+++ b/arch/arm64/kernel/entry-fpsimd.S
@@ -66,22 +66,6 @@ SYM_FUNC_START(sve_set_vq)
ret
SYM_FUNC_END(sve_set_vq)
-/*
- * Load SVE state from FPSIMD state.
- *
- * x0 = pointer to struct fpsimd_state
- * x1 = VQ - 1
- *
- * Each SVE vector will be loaded with the first 128-bits taken from FPSIMD
- * and the rest zeroed. All the other SVE registers will be zeroed.
- */
-SYM_FUNC_START(sve_load_from_fpsimd_state)
- sve_load_vq x1, x2, x3
- fpsimd_restore x0, 8
- sve_flush_p_ffr
- ret
-SYM_FUNC_END(sve_load_from_fpsimd_state)
-
/*
* Zero all SVE registers but the first 128-bits of each vector
*
--
2.20.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-09-30 18:15 UTC|newest]
Thread overview: 143+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-30 18:11 [PATCH v1 00/38] arm64/sme: Initial support for the Scalable Matrix Extension Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 01/38] arm64/fp: Reindent fpsimd_save() Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-10-11 9:39 ` Jonathan Cameron
2021-10-11 9:39 ` Jonathan Cameron
2021-10-11 13:02 ` Mark Brown
2021-10-11 13:02 ` Mark Brown
2021-09-30 18:11 ` Mark Brown [this message]
2021-09-30 18:11 ` [PATCH v1 02/38] arm64/sve: Remove sve_load_from_fpsimd_state() Mark Brown
2021-09-30 18:11 ` [PATCH v1 03/38] arm64/sve: Make access to FFR optional Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 04/38] arm64/sve: Rename find_supported_vector_length() Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 05/38] arm64/sve: Use accessor functions for vector lengths in thread_struct Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 06/38] arm64/sve: Put system wide vector length information into structs Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-10-01 3:13 ` kernel test robot
2021-10-01 3:13 ` kernel test robot
2021-10-01 3:13 ` kernel test robot
2021-09-30 18:11 ` [PATCH v1 07/38] arm64/sve: Explicitly load vector length when restoring SVE state Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 08/38] arm64/sve: Track vector lengths for tasks in an array Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-10-11 10:20 ` Jonathan Cameron
2021-10-11 10:20 ` Jonathan Cameron
2021-10-11 13:14 ` Mark Brown
2021-10-11 13:14 ` Mark Brown
2021-10-11 13:18 ` Jonathan Cameron
2021-10-11 13:18 ` Jonathan Cameron
2021-09-30 18:11 ` [PATCH v1 09/38] arm64/sve: Make sysctl interface for SVE reusable by SME Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 10/38] arm64/sve: Generalise vector length configuration prctl() for SME Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-10-11 10:27 ` Jonathan Cameron
2021-10-11 10:27 ` Jonathan Cameron
2021-10-11 13:18 ` Mark Brown
2021-10-11 13:18 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 11/38] selftests: arm64: Parameterise ptrace vector length information Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 12/38] arm64/sme: Provide ABI documentation for SME Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-10-08 14:11 ` Alan Hayward
2021-10-08 14:11 ` Alan Hayward
2021-10-08 15:28 ` Mark Brown
2021-10-08 15:28 ` Mark Brown
2021-10-08 16:45 ` Alan Hayward
2021-10-08 16:45 ` Alan Hayward
2021-10-08 17:04 ` Mark Brown
2021-10-08 17:04 ` Mark Brown
2021-10-11 11:15 ` Alan Hayward
2021-10-11 11:15 ` Alan Hayward
2021-10-11 11:48 ` Mark Brown
2021-10-11 11:48 ` Mark Brown
2021-10-11 11:05 ` Jonathan Cameron
2021-10-11 11:05 ` Jonathan Cameron
2021-10-11 13:20 ` Mark Brown
2021-10-11 13:20 ` Mark Brown
2021-10-11 13:17 ` Szabolcs Nagy
2021-10-11 13:17 ` Szabolcs Nagy
2021-10-11 13:23 ` Mark Brown
2021-10-11 13:23 ` Mark Brown
2021-10-11 14:19 ` Szabolcs Nagy
2021-10-11 14:19 ` Szabolcs Nagy
2021-10-11 20:10 ` Mark Brown
2021-10-11 20:10 ` Mark Brown
2021-10-12 8:23 ` Szabolcs Nagy
2021-10-12 8:23 ` Szabolcs Nagy
2021-10-13 18:37 ` Mark Brown
2021-10-13 18:37 ` Mark Brown
2021-10-14 9:57 ` Szabolcs Nagy
2021-10-14 9:57 ` Szabolcs Nagy
2021-09-30 18:11 ` [PATCH v1 13/38] arm64/sme: System register and exception syndrome definitions Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 14/38] arm64/sme: Define macros for manually encoding SME instructions Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 15/38] arm64/sme: Early CPU setup for SME Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 16/38] arm64/sme: Basic enumeration support Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 17/38] arm64/sme: Identify supported SME vector lengths at boot Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 18/38] arm64/sme: Implement sysctl to set the default vector length Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 19/38] arm64/sme: Implement vector length configuration prctl()s Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-10-01 5:20 ` kernel test robot
2021-10-01 5:20 ` kernel test robot
2021-10-01 5:20 ` kernel test robot
2021-10-01 12:40 ` Mark Brown
2021-10-01 12:40 ` Mark Brown
2021-10-01 12:40 ` Mark Brown
2021-10-08 1:32 ` [kbuild-all] " Chen, Rong A
2021-10-08 1:32 ` Chen, Rong A
2021-10-08 1:32 ` [kbuild-all] " Chen, Rong A
2021-10-01 16:38 ` kernel test robot
2021-10-01 16:38 ` kernel test robot
2021-10-01 16:38 ` kernel test robot
2021-09-30 18:11 ` [PATCH v1 20/38] arm64/sme: Implement support for TPIDR2 Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 21/38] arm64/sme: Implement SVCR context switching Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-10-11 12:15 ` Jonathan Cameron
2021-10-11 12:15 ` Jonathan Cameron
2021-09-30 18:11 ` [PATCH v1 22/38] arm64/sme: Implement streaming SVE " Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 23/38] arm64/sme: Implement ZA " Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-10-11 12:27 ` Jonathan Cameron
2021-10-11 12:27 ` Jonathan Cameron
2021-09-30 18:11 ` [PATCH v1 24/38] arm64/sme: Implement traps and syscall handling for SME Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-10-11 12:37 ` Jonathan Cameron
2021-10-11 12:37 ` Jonathan Cameron
2021-09-30 18:11 ` [PATCH v1 25/38] arm64/sme: Implement streaming SVE signal handling Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 26/38] arm64/sme: Implement ZA " Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 27/38] arm64/sme: Implement ptrace support for streaming mode SVE registers Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 28/38] arm64/sme: Add ptrace support for ZA Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 29/38] arm64/sme: Disable streaming mode and ZA when flushing CPU state Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 30/38] arm64/sme: Save and restore streaming mode over EFI runtime calls Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 31/38] arm64/sme: Provide Kconfig for SME Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 32/38] kselftest/arm64: Add tests for TPIDR2 Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 33/38] kselftest/arm64: Extend vector configuration API tests to cover SME Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 34/38] kselftest/arm64: sme: Provide streaming mode SVE stress test Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 35/38] kselftest/arm64: Add stress test for SME ZA context switching Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 36/38] kselftest/arm64: signal: Add SME signal handling tests Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 37/38] selftests: arm64: Add streaming SVE to SVE ptrace tests Mark Brown
2021-09-30 18:11 ` Mark Brown
2021-09-30 18:11 ` [PATCH v1 38/38] selftests: arm64: Add coverage for the ZA ptrace interface Mark Brown
2021-09-30 18:11 ` Mark Brown
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210930181144.10029-3-broonie@kernel.org \
--to=broonie@kernel.org \
--cc=Basant.KumarDwivedi@arm.com \
--cc=Salil.Akerkar@arm.com \
--cc=alan.hayward@arm.com \
--cc=catalin.marinas@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=luis.machado@arm.com \
--cc=shuah@kernel.org \
--cc=skhan@linuxfoundation.org \
--cc=szabolcs.nagy@arm.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.