[Patch v2 1/2] arm: kernel: Add SMC structure parameter
From: Will Deacon <hidden>
Date: 2017-01-04 17:44:14
Also in:
linux-arm-msm, lkml
On Thu, Dec 29, 2016 at 05:27:25PM -0600, Andy Gross wrote:
This patch adds a quirk parameter to the arm_smccc_smc call. The quirk structure allows for specialized SMC operations due to SoC specific requirements. The current arm_smccc_smc is renamed and macros are used instead to specify the standard arm_smccc_smc or the arm_smccc_smc_quirk function. This patch and partial implementation was suggested by Will Deacon. Signed-off-by: Andy Gross <redacted> --- arch/arm/kernel/armksyms.c | 2 +- arch/arm/kernel/smccc-call.S | 7 ++++--- arch/arm64/kernel/arm64ksyms.c | 2 +- arch/arm64/kernel/asm-offsets.c | 7 +++++-- arch/arm64/kernel/smccc-call.S | 7 ++++--- include/linux/arm-smccc.h | 28 ++++++++++++++++++++++++---- 6 files changed, 39 insertions(+), 14 deletions(-)
[...]
quoted hunk ↗ jump to hunk
@@ -101,4 +115,10 @@ asmlinkage void arm_smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a5, unsigned long a6, unsigned long a7, struct arm_smccc_res *res); +#define arm_smccc_smc(a0, a1, a2, a3, a4, a5, a6, a7, res) \ + __arm_smccc_smc(a0, a1, a2, a3, a4, a5, a6, a7, res, NULL) + +#define arm_smccc_smc_quirk(a0, a1, a2, a3, a4, a5, a6, a7, res, quirk) \ + __arm_smccc_smc(a0, a1, a2, a3, a4, a5, a6, a7, res, quirk)
This might be a bit cleaner with a variadic macro, but either way: Reviewed-by: Will Deacon <redacted> Will