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| author | Rusty Russell <rusty@rustcorp.com.au> | 2015-02-11 07:45:09 +0300 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2015-02-11 09:17:30 +0300 |
| commit | 69a09dc1742ffbb3b02f3a1e03da4801e96452e9 (patch) | |
| tree | c9887c6b6150810ba103b76cf9d4376af3edd5e5 /include/linux | |
| parent | 18c137371b2ea86d263b75665a4904a0b8872990 (diff) | |
| download | linux-69a09dc1742ffbb3b02f3a1e03da4801e96452e9.tar.xz | |
lguest: write more information to userspace about pending traps.
This is preparation for userspace handling MMIO and ioport accesses.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/lguest_launcher.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/lguest_launcher.h b/include/linux/lguest_launcher.h index f27cae27b0c1..c4451ebece47 100644 --- a/include/linux/lguest_launcher.h +++ b/include/linux/lguest_launcher.h @@ -68,6 +68,19 @@ enum lguest_req }; /* + * This is what read() of the lguest fd populates. trap == + * LGUEST_TRAP_ENTRY for an LHCALL_NOTIFY (addr is the + * argument), 14 for a page fault in the MMIO region (addr is + * the trap address, insn is the instruction), or 13 for a GPF + * (insn is the instruction). + */ +struct lguest_pending { + __u8 trap; + __u8 insn[7]; + __u32 addr; +}; + +/* * The alignment to use between consumer and producer parts of vring. * x86 pagesize for historical reasons. */ |