Displaying 4 results from an estimated 4 matches for "restore_fpu_checking".
Xen PV ABI on FPU doesn't match with pvops kernel FPU code, reducing to a serious memory data damage
2013 Nov 07
0
Xen PV ABI on FPU doesn't match with pvops kernel FPU code, reducing to a serious memory data damage
...*/
do_group_exit(SIGKILL);
return;
}
local_irq_disable(); <<<< Here it closes
}
__thread_fpu_begin(tsk);
/*
* Paranoid restore. send a SIGSEGV if we fail to restore the state.
*/
if (unlikely(restore_fpu_checking(tsk))) {
drop_init_fpu(tsk);
force_sig(SIGSEGV, tsk);
return;
}
tsk->fpu_counter++;
}
]
This can cause serious data damage against xen pv guests (including
dom0 kernel), we have encountered this issue both in stress test and
production systems. Please take a loo...
Xen PV ABI on FPU doesn't match with pvops kernel FPU code, reducing to a serious memory data damage
2013 Nov 07
0
Xen PV ABI on FPU doesn't match with pvops kernel FPU code, reducing to a serious memory data damage
...*/
do_group_exit(SIGKILL);
return;
}
local_irq_disable(); <<<< Here it closes
}
__thread_fpu_begin(tsk);
/*
* Paranoid restore. send a SIGSEGV if we fail to restore the state.
*/
if (unlikely(restore_fpu_checking(tsk))) {
drop_init_fpu(tsk);
force_sig(SIGSEGV, tsk);
return;
}
tsk->fpu_counter++;
}
]
This can cause serious data damage against xen pv guests (including
dom0 kernel), we have encountered this issue both in stress test and
production systems. Please take a loo...
2012 Jun 29
0
[PATCH] linux-2.6.18/x86: improve CR0 read/write handling
...truct task_struct *me = current;
- /* clts(); */ /* ''clts'' is done for us by Xen during virtual trap. */
+ /* NB. ''clts'' is done for us by Xen during virtual trap. */
+ __get_cpu_var(xen_x86_cr0) &= ~X86_CR0_TS;
if (!used_math())
init_fpu(me);
restore_fpu_checking(&me->thread.i387.fxsave);
--- a/include/asm-i386/mach-xen/asm/system.h
+++ b/include/asm-i386/mach-xen/asm/system.h
@@ -2,8 +2,10 @@
#define __ASM_SYSTEM_H
#include <linux/kernel.h>
+#include <linux/threads.h>
#include <asm/segment.h>
#include <asm/cpufeature.h>...
2006 Jul 26
5
linux-2.6-xen.hg
Hi,
Is the http://xenbits.xensource.com/linux-2.6-xen.hg tree still being
updated? if not, what''s the preferred Linux tree to track that has all
of the Xen bits?
Thanks,
Muli
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