* [PATCH] x86: don't open-code vmap_to_mfn()
@ 2020-10-26 15:53 Jan Beulich
2020-10-26 15:59 ` Wei Liu
0 siblings, 1 reply; 2+ messages in thread
From: Jan Beulich @ 2020-10-26 15:53 UTC (permalink / raw)
To: xen-devel@lists.xenproject.org
Cc: Andrew Cooper, Wei Liu, Roger Pau Monné
Signed-off-by: Jan Beulich <jbeulich@suse.com>
--- a/xen/arch/x86/domain_page.c
+++ b/xen/arch/x86/domain_page.c
@@ -333,21 +333,14 @@ void unmap_domain_page_global(const void
mfn_t domain_page_map_to_mfn(const void *ptr)
{
unsigned long va = (unsigned long)ptr;
- const l1_pgentry_t *pl1e;
if ( va >= DIRECTMAP_VIRT_START )
return _mfn(virt_to_mfn(ptr));
if ( va >= VMAP_VIRT_START && va < VMAP_VIRT_END )
- {
- pl1e = virt_to_xen_l1e(va);
- BUG_ON(!pl1e);
- }
- else
- {
- ASSERT(va >= MAPCACHE_VIRT_START && va < MAPCACHE_VIRT_END);
- pl1e = &__linear_l1_table[l1_linear_offset(va)];
- }
+ return vmap_to_mfn(va);
- return l1e_get_mfn(*pl1e);
+ ASSERT(va >= MAPCACHE_VIRT_START && va < MAPCACHE_VIRT_END);
+
+ return l1e_get_mfn(__linear_l1_table[l1_linear_offset(va)]);
}
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-10-26 15:53 [PATCH] x86: don't open-code vmap_to_mfn() Jan Beulich
2020-10-26 15:59 ` Wei Liu
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