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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

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The netfilter conflicts were rather simple overlapping
changes.

However, the cls_tcindex.c stuff was a bit more complex.

On the 'net' side, Cong is fixing several races and memory
leaks.  Whilst on the 'net-next' side we have Vlad adding
the rtnl-ness support.

What I've decided to do, in order to resolve this, is revert the
conversion over to using a workqueue that Cong did, bringing us back
to pure RCU.  I did it this way because I believe that either Cong's
races don't apply with have Vlad did things, or Cong will have to
implement the race fix slightly differently.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2019-02-15 12:38:38 -08:00
parent 50f444aa50 24f0a48743
commit 3313da8188
272 changed files with 1968 additions and 1234 deletions
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22
arch/powerpc/include/asm/book3s/64/pgtable.h
View File

@@ -1258,21 +1258,13 @@ extern pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
#define pmd_move_must_withdraw pmd_move_must_withdraw
struct spinlock;
static inline int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
struct spinlock *old_pmd_ptl,
struct vm_area_struct *vma)
{
if (radix_enabled())
return false;
/*
* Archs like ppc64 use pgtable to store per pmd
* specific information. So when we switch the pmd,
* we should also withdraw and deposit the pgtable
*/
return true;
}
extern int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
struct spinlock *old_pmd_ptl,
struct vm_area_struct *vma);
/*
* Hash translation mode use the deposited table to store hash pte
* slot information.
*/
#define arch_needs_pgtable_deposit arch_needs_pgtable_deposit
static inline bool arch_needs_pgtable_deposit(void)
{

22
arch/powerpc/mm/pgtable-book3s64.c
View File

@@ -400,3 +400,25 @@ void arch_report_meminfo(struct seq_file *m)
atomic_long_read(&direct_pages_count[MMU_PAGE_1G]) << 20);
}
#endif /* CONFIG_PROC_FS */
/*
* For hash translation mode, we use the deposited table to store hash slot
* information and they are stored at PTRS_PER_PMD offset from related pmd
* location. Hence a pmd move requires deposit and withdraw.
*
* For radix translation with split pmd ptl, we store the deposited table in the
* pmd page. Hence if we have different pmd page we need to withdraw during pmd
* move.
*
* With hash we use deposited table always irrespective of anon or not.
* With radix we use deposited table only for anonymous mapping.
*/
int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
struct spinlock *old_pmd_ptl,
struct vm_area_struct *vma)
{
if (radix_enabled())
return (new_pmd_ptl != old_pmd_ptl) && vma_is_anonymous(vma);
return true;
}

5
arch/powerpc/platforms/pseries/papr_scm.c
View File

@@ -43,6 +43,7 @@ static int drc_pmem_bind(struct papr_scm_priv *p)
{
unsigned long ret[PLPAR_HCALL_BUFSIZE];
uint64_t rc, token;
uint64_t saved = 0;
/*
* When the hypervisor cannot map all the requested memory in a single
@@ -56,6 +57,8 @@ static int drc_pmem_bind(struct papr_scm_priv *p)
rc = plpar_hcall(H_SCM_BIND_MEM, ret, p->drc_index, 0,
p->blocks, BIND_ANY_ADDR, token);
token = ret[0];
if (!saved)
saved = ret[1];
cond_resched();
} while (rc == H_BUSY);
@@ -64,7 +67,7 @@ static int drc_pmem_bind(struct papr_scm_priv *p)
return -ENXIO;
}
p->bound_addr = ret[1];
p->bound_addr = saved;
dev_dbg(&p->pdev->dev, "bound drc %x to %pR\n", p->drc_index, &p->res);