Re: [PATCH v4 28/29] kselftest/arm64: Add test case for POR_EL0 signal frame records
From: Kevin Brodsky <hidden>
Date: 2024-07-09 13:10:23
Also in:
kvmarm, linux-fsdevel, linux-mm, linuxppc-dev
On 03/05/2024 15:01, Joey Gouly wrote:
+static uint64_t get_por_el0(void)
+{
+ uint64_t val;
+
+ asm volatile (
+ "mrs %0, " SYS_POR_EL0 "\n"
+ : "=r"(val)
+ :
+ : "cc");Not sure why we would need "cc" for an MRS? __read_pkey_reg() doesn't use it (maybe we could directly use that function here if including pkey-arm64.h is OK). Kevin
+ + return val; +}