machine_reset() - instead of trying to cause an invalid data access
that gcc will optimize away, just use "trapa" instruction.
G/c assignment to EXPEVT, it will be set by the actual reset. That
assignment has been probably cargo-culted from cpu_reset() that
manually jumps to 0xa0000000 (the reset address) instead of triggering
a reset.
TODO: This code should be SuperH generic cpu_reset().
that kern_end was pointing to DUMMY PAGE, which was already kentered
earlier in xen_locore, causing pmap to panic.
This change adds support for kernel modules in Xen.
all, with magic offsets here and there in different layers of the system.
It is just blind luck that everything has always worked as expected so
far.
Due to this wrong design we have a problem now: we allocate one physical
page for lapic, and it happens to overlap with the dummy page, which
causes the system to crash.
Fix this by keeping the dummy va directly in a variable instead of magic
offsets. The asm locore now increments the first pa to hide the dummy page
to machdep and pmap.
rx_packets. It's inconsistent. It makes rx_packets is bigger than rx_bytes.
IMHO, it's not required to clear them. At least the above comment says
"/* Setup our descriptor indices */". It's not descriptor indice...
- Do ifconfig -w 10 after ifconfig up
- Accept /1d0h0m..s/ in addition to /23h59m..s/ for expiration time
- Prevent new RA messages from coming after flushing entries
The changes should fix flapping of test results on babylon5.
Hardware assisted breakpoint/watchpoint API has been merged with current.
Add note about pthread_dbg(3) API needed to be refactored and limited to
querying POSIX thread private data fields.
Sponsored by <The NetBSD Foundation>
Addedd tests:
- watchpoint_count
- watchpoint_read
- watchpoint_write_unmodified
- watchpoint_trap_code[0123]
- watchpoint_trap_data_write[0123]
- watchpoint_trap_data_rw[0123]
These code will be reused later for i386 and moved to a common place like
tests/kernel/arch/x86.
These tests are x86 specific only. The same API but different private
ptrace_watchpoint MD part has to be used on other ports.
All tests pass on amd64.
Sponsored by <The NetBSD Foundation>
Add new ptrace(2) calls:
- PT_COUNT_WATCHPOINTS - count the number of available hardware watchpoints
- PT_READ_WATCHPOINT - read struct ptrace_watchpoint from the kernel state
- PT_WRITE_WATCHPOINT - write new struct ptrace_watchpoint state, this
includes enabling and disabling watchpoints
The ptrace_watchpoint structure contains MI and MD parts:
typedef struct ptrace_watchpoint {
int pw_index; /* HW Watchpoint ID (count from 0) */
lwpid_t pw_lwpid; /* LWP described */
struct mdpw pw_md; /* MD fields */
} ptrace_watchpoint_t;
For example amd64 defines MD as follows:
struct mdpw {
void *md_address;
int md_condition;
int md_length;
};
These calls are protected with the __HAVE_PTRACE_WATCHPOINTS guard.
Tested on amd64, initial support added for i386 and XEN.
Sponsored by <The NetBSD Foundation>
