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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-11-02 13:26:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-11-02 13:26:11 -0700 |
| commit | 66b6a0c979e88810e753e528dd0b9aef30ba21a1 (patch) | |
| tree | a6d89319a80abcdac4da1602dce5d4249358b1ca /arch/x86 | |
| parent | d9b482c8ba1973a189f2d4c8175d405b87fbf2d7 (diff) | |
| parent | 95a7d76897c1e7243d4137037c66d15cbf2cce76 (diff) | |
| download | linux-66b6a0c979e88810e753e528dd0b9aef30ba21a1.tar.bz2 | |
Merge tag 'stable/for-linus-3.7-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull Xen bugfixes from Konrad Rzeszutek Wilk:
- Use appropriate macros instead of hand-rolling our own (ARM).
- Fixes if FB/KBD closed unexpectedly.
- Fix memory leak in /dev/gntdev ioctl calls.
- Fix overflow check in xenbus_file_write.
- Document cleanup.
- Performance optimization when migrating guests.
* tag 'stable/for-linus-3.7-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/mmu: Use Xen specific TLB flush instead of the generic one.
xen/arm: use the __HVC macro
xen/xenbus: fix overflow check in xenbus_file_write()
xen-kbdfront: handle backend CLOSED without CLOSING
xen-fbfront: handle backend CLOSED without CLOSING
xen/gntdev: don't leak memory from IOCTL_GNTDEV_MAP_GRANT_REF
x86: remove obsolete comment from asm/xen/hypervisor.h
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/xen/hypervisor.h | 1 | ||||
| -rw-r--r-- | arch/x86/xen/mmu.c | 21 |
2 files changed, 20 insertions, 2 deletions
diff --git a/arch/x86/include/asm/xen/hypervisor.h b/arch/x86/include/asm/xen/hypervisor.h index 66d0fff1ee84..125f344f06a9 100644 --- a/arch/x86/include/asm/xen/hypervisor.h +++ b/arch/x86/include/asm/xen/hypervisor.h @@ -33,7 +33,6 @@ #ifndef _ASM_X86_XEN_HYPERVISOR_H #define _ASM_X86_XEN_HYPERVISOR_H -/* arch/i386/kernel/setup.c */ extern struct shared_info *HYPERVISOR_shared_info; extern struct start_info *xen_start_info; diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 6226c99729b9..dcf5f2dd91ec 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1288,6 +1288,25 @@ unsigned long xen_read_cr2_direct(void) return this_cpu_read(xen_vcpu_info.arch.cr2); } +void xen_flush_tlb_all(void) +{ + struct mmuext_op *op; + struct multicall_space mcs; + + trace_xen_mmu_flush_tlb_all(0); + + preempt_disable(); + + mcs = xen_mc_entry(sizeof(*op)); + + op = mcs.args; + op->cmd = MMUEXT_TLB_FLUSH_ALL; + MULTI_mmuext_op(mcs.mc, op, 1, NULL, DOMID_SELF); + + xen_mc_issue(PARAVIRT_LAZY_MMU); + + preempt_enable(); +} static void xen_flush_tlb(void) { struct mmuext_op *op; @@ -2518,7 +2537,7 @@ int xen_remap_domain_mfn_range(struct vm_area_struct *vma, err = 0; out: - flush_tlb_all(); + xen_flush_tlb_all(); return err; } |