On 7/30/23 23:41, Xin Li wrote:
+static DEFINE_FRED_HANDLER(fred_other_default)
+{
+ regs->vector = X86_TRAP_UD;
+ fred_emulate_fault(regs);
+}
+
+static DEFINE_FRED_HANDLER(fred_syscall)
+{
+ regs->orig_ax = regs->ax;
+ regs->ax = -ENOSYS;
+ do_syscall_64(regs,
On 7/30/23 23:41, Xin Li wrote:
+
+static DEFINE_FRED_HANDLER(fred_sw_interrupt_user)
+{
+ /*
+* In compat mode INT $0x80 (32bit system call) is
+* performance-critical. Handle it first.
+*/
+ if (IS_ENABLED(CONFIG_IA32_EMULATION) &&
+
From: "H. Peter Anvin (Intel)"
The code to actually handle kernel and event entry/exit using
FRED. It is split up into two files thus:
- entry_64_fred.S contains the actual entrypoints and exit code, and
saves and restores registers.
- entry_fred.c contains the two-level event dispatch code
