diff options
Diffstat (limited to 'sys/i386')
-rw-r--r-- | sys/i386/i386/npx.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/sys/i386/i386/npx.c b/sys/i386/i386/npx.c index 7c3496575199..fc03de27d407 100644 --- a/sys/i386/i386/npx.c +++ b/sys/i386/i386/npx.c @@ -479,8 +479,21 @@ npxinitstate(void *arg __unused) if (!hw_float) return; + /* Do potentially blocking operations before disabling interrupts. */ + fpu_save_area_zone = uma_zcreate("FPU_save_area", + cpu_max_ext_state_size, NULL, NULL, NULL, NULL, + XSAVE_AREA_ALIGN - 1, 0); npx_initialstate = malloc(cpu_max_ext_state_size, M_DEVBUF, M_WAITOK | M_ZERO); + if (use_xsave) { + if (xsave_mask >> 32 != 0) + max_ext_n = fls(xsave_mask >> 32) + 32; + else + max_ext_n = fls(xsave_mask); + xsave_area_desc = malloc(max_ext_n * sizeof(struct + xsave_area_elm_descr), M_DEVBUF, M_WAITOK | M_ZERO); + } + saveintr = intr_disable(); stop_emulating(); @@ -522,12 +535,6 @@ npxinitstate(void *arg __unused) offsetof(struct xstate_hdr, xstate_bv)); *xstate_bv = XFEATURE_ENABLED_X87 | XFEATURE_ENABLED_SSE; - if (xsave_mask >> 32 != 0) - max_ext_n = fls(xsave_mask >> 32) + 32; - else - max_ext_n = fls(xsave_mask); - xsave_area_desc = malloc(max_ext_n * sizeof(struct - xsave_area_elm_descr), M_DEVBUF, M_WAITOK | M_ZERO); /* x87 state */ xsave_area_desc[0].offset = 0; xsave_area_desc[0].size = 160; @@ -542,10 +549,6 @@ npxinitstate(void *arg __unused) } } - fpu_save_area_zone = uma_zcreate("FPU_save_area", - cpu_max_ext_state_size, NULL, NULL, NULL, NULL, - XSAVE_AREA_ALIGN - 1, 0); - start_emulating(); intr_restore(saveintr); } |