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author | David Woodhouse <dwmw2@infradead.org> | 2007-08-23 10:43:14 +0100 |
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committer | David Woodhouse <dwmw2@infradead.org> | 2007-08-23 10:43:14 +0100 |
commit | ac0c955d5048c2c580fa7166a89133f0fd76c125 (patch) | |
tree | 041ac4fb544c7244a1a0b35c8ceabc142d5645c1 /drivers/lguest/lguest.c | |
parent | 68d09b1b6780415d82160f6b6d88e82bd724e691 (diff) | |
parent | b377fd3982ad957c796758a90e2988401a884241 (diff) | |
download | linux-ac0c955d5048c2c580fa7166a89133f0fd76c125.tar.bz2 |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/lguest/lguest.c')
-rw-r--r-- | drivers/lguest/lguest.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/lguest/lguest.c b/drivers/lguest/lguest.c index 1bc1546c7fd0..6e135ac0834f 100644 --- a/drivers/lguest/lguest.c +++ b/drivers/lguest/lguest.c @@ -323,9 +323,12 @@ static void lguest_write_gdt_entry(struct desc_struct *dt, * __thread variables). So we have a hypercall specifically for this case. */ static void lguest_load_tls(struct thread_struct *t, unsigned int cpu) { + /* There's one problem which normal hardware doesn't have: the Host + * can't handle us removing entries we're currently using. So we clear + * the GS register here: if it's needed it'll be reloaded anyway. */ + loadsegment(gs, 0); lazy_hcall(LHCALL_LOAD_TLS, __pa(&t->tls_array), cpu, 0); } -/*:*/ /*G:038 That's enough excitement for now, back to ploughing through each of * the paravirt_ops (we're about 1/3 of the way through). @@ -687,7 +690,8 @@ static struct clocksource lguest_clock = { .rating = 400, .read = lguest_clock_read, .mask = CLOCKSOURCE_MASK(64), - .mult = 1, + .mult = 1 << 22, + .shift = 22, }; /* The "scheduler clock" is just our real clock, adjusted to start at zero */ @@ -770,7 +774,6 @@ static void lguest_time_init(void) * way, the "rating" is initialized so high that it's always chosen * over any other clocksource. */ if (lguest_data.tsc_khz) { - lguest_clock.shift = 22; lguest_clock.mult = clocksource_khz2mult(lguest_data.tsc_khz, lguest_clock.shift); lguest_clock.flags = CLOCK_SOURCE_IS_CONTINUOUS; @@ -933,23 +936,24 @@ static const struct lguest_insns /* Now our patch routine is fairly simple (based on the native one in * paravirt.c). If we have a replacement, we copy it in and return how much of * the available space we used. */ -static unsigned lguest_patch(u8 type, u16 clobber, void *insns, unsigned len) +static unsigned lguest_patch(u8 type, u16 clobber, void *ibuf, + unsigned long addr, unsigned len) { unsigned int insn_len; /* Don't do anything special if we don't have a replacement */ if (type >= ARRAY_SIZE(lguest_insns) || !lguest_insns[type].start) - return paravirt_patch_default(type, clobber, insns, len); + return paravirt_patch_default(type, clobber, ibuf, addr, len); insn_len = lguest_insns[type].end - lguest_insns[type].start; /* Similarly if we can't fit replacement (shouldn't happen, but let's * be thorough). */ if (len < insn_len) - return paravirt_patch_default(type, clobber, insns, len); + return paravirt_patch_default(type, clobber, ibuf, addr, len); /* Copy in our instructions. */ - memcpy(insns, lguest_insns[type].start, insn_len); + memcpy(ibuf, lguest_insns[type].start, insn_len); return insn_len; } |