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authorLinus Torvalds <torvalds@linux-foundation.org>2022-03-25 10:01:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-25 10:01:34 -0700
commitd710d370c4911e83da5d2bc43d4a2c3b56bd27e7 (patch)
tree9e7a702654feb88e2555c1bf41f71ef4a58b25aa /arch/s390/mm/gmap.c
parent744465da705f7d8cd893e97738a47b91f3321ce2 (diff)
parentc65f677b62d6180cc174e06f953f7fe860adf6d1 (diff)
Merge tag 's390-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik: - Raise minimum supported machine generation to z10, which comes with various cleanups and code simplifications (usercopy/spectre mitigation/etc). - Rework extables and get rid of anonymous out-of-line fixups. - Page table helpers cleanup. Add set_pXd()/set_pte() helper functions. Covert pte_val()/pXd_val() macros to functions. - Optimize kretprobe handling by avoiding extra kprobe on __kretprobe_trampoline. - Add support for CEX8 crypto cards. - Allow to trigger AP bus rescan via writing to /sys/bus/ap/scans. - Add CONFIG_EXPOLINE_EXTERN option to build the kernel without COMDAT group sections which simplifies kpatch support. - Always use the packed stack layout and extend kernel unwinder tests. - Add sanity checks for ftrace code patching. - Add s390dbf debug log for the vfio_ap device driver. - Various virtual vs physical address confusion fixes. - Various small fixes and improvements all over the code. * tag 's390-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (69 commits) s390/test_unwind: add kretprobe tests s390/kprobes: Avoid additional kprobe in kretprobe handling s390: convert ".insn" encoding to instruction names s390: assume stckf is always present s390/nospec: move to single register thunks s390: raise minimum supported machine generation to z10 s390/uaccess: Add copy_from/to_user_key functions s390/nospec: align and size extern thunks s390/nospec: add an option to use thunk-extern s390/nospec: generate single register thunks if possible s390/pci: make zpci_set_irq()/zpci_clear_irq() static s390: remove unused expoline to BC instructions s390/irq: use assignment instead of cast s390/traps: get rid of magic cast for per code s390/traps: get rid of magic cast for program interruption code s390/signal: fix typo in comments s390/asm-offsets: remove unused defines s390/test_unwind: avoid build warning with W=1 s390: remove .fixup section s390/bpf: encode register within extable entry ...
Diffstat (limited to 'arch/s390/mm/gmap.c')
-rw-r--r--arch/s390/mm/gmap.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c
index dfee0ebb2fac..af03cacf34ec 100644
--- a/arch/s390/mm/gmap.c
+++ b/arch/s390/mm/gmap.c
@@ -974,18 +974,18 @@ static int gmap_protect_pmd(struct gmap *gmap, unsigned long gaddr,
return -EAGAIN;
if (prot == PROT_NONE && !pmd_i) {
- pmd_val(new) |= _SEGMENT_ENTRY_INVALID;
+ new = set_pmd_bit(new, __pgprot(_SEGMENT_ENTRY_INVALID));
gmap_pmdp_xchg(gmap, pmdp, new, gaddr);
}
if (prot == PROT_READ && !pmd_p) {
- pmd_val(new) &= ~_SEGMENT_ENTRY_INVALID;
- pmd_val(new) |= _SEGMENT_ENTRY_PROTECT;
+ new = clear_pmd_bit(new, __pgprot(_SEGMENT_ENTRY_INVALID));
+ new = set_pmd_bit(new, __pgprot(_SEGMENT_ENTRY_PROTECT));
gmap_pmdp_xchg(gmap, pmdp, new, gaddr);
}
if (bits & GMAP_NOTIFY_MPROT)
- pmd_val(*pmdp) |= _SEGMENT_ENTRY_GMAP_IN;
+ set_pmd(pmdp, set_pmd_bit(*pmdp, __pgprot(_SEGMENT_ENTRY_GMAP_IN)));
/* Shadow GMAP protection needs split PMDs */
if (bits & GMAP_NOTIFY_SHADOW)
@@ -1151,7 +1151,7 @@ int gmap_read_table(struct gmap *gmap, unsigned long gaddr, unsigned long *val)
address = pte_val(pte) & PAGE_MASK;
address += gaddr & ~PAGE_MASK;
*val = *(unsigned long *) address;
- pte_val(*ptep) |= _PAGE_YOUNG;
+ set_pte(ptep, set_pte_bit(*ptep, __pgprot(_PAGE_YOUNG)));
/* Do *NOT* clear the _PAGE_INVALID bit! */
rc = 0;
}
@@ -1278,7 +1278,7 @@ static int gmap_protect_rmap(struct gmap *sg, unsigned long raddr,
static inline void gmap_idte_one(unsigned long asce, unsigned long vaddr)
{
asm volatile(
- " .insn rrf,0xb98e0000,%0,%1,0,0"
+ " idte %0,0,%1"
: : "a" (asce), "a" (vaddr) : "cc", "memory");
}
@@ -2275,7 +2275,7 @@ EXPORT_SYMBOL_GPL(ptep_notify);
static void pmdp_notify_gmap(struct gmap *gmap, pmd_t *pmdp,
unsigned long gaddr)
{
- pmd_val(*pmdp) &= ~_SEGMENT_ENTRY_GMAP_IN;
+ set_pmd(pmdp, clear_pmd_bit(*pmdp, __pgprot(_SEGMENT_ENTRY_GMAP_IN)));
gmap_call_notifier(gmap, gaddr, gaddr + HPAGE_SIZE - 1);
}
@@ -2294,7 +2294,7 @@ static void gmap_pmdp_xchg(struct gmap *gmap, pmd_t *pmdp, pmd_t new,
{
gaddr &= HPAGE_MASK;
pmdp_notify_gmap(gmap, pmdp, gaddr);
- pmd_val(new) &= ~_SEGMENT_ENTRY_GMAP_IN;
+ new = clear_pmd_bit(new, __pgprot(_SEGMENT_ENTRY_GMAP_IN));
if (MACHINE_HAS_TLB_GUEST)
__pmdp_idte(gaddr, (pmd_t *)pmdp, IDTE_GUEST_ASCE, gmap->asce,
IDTE_GLOBAL);
@@ -2302,7 +2302,7 @@ static void gmap_pmdp_xchg(struct gmap *gmap, pmd_t *pmdp, pmd_t new,
__pmdp_idte(gaddr, (pmd_t *)pmdp, 0, 0, IDTE_GLOBAL);
else
__pmdp_csp(pmdp);
- *pmdp = new;
+ set_pmd(pmdp, new);
}
static void gmap_pmdp_clear(struct mm_struct *mm, unsigned long vmaddr,
@@ -2324,7 +2324,7 @@ static void gmap_pmdp_clear(struct mm_struct *mm, unsigned long vmaddr,
_SEGMENT_ENTRY_GMAP_UC));
if (purge)
__pmdp_csp(pmdp);
- pmd_val(*pmdp) = _SEGMENT_ENTRY_EMPTY;
+ set_pmd(pmdp, __pmd(_SEGMENT_ENTRY_EMPTY));
}
spin_unlock(&gmap->guest_table_lock);
}
@@ -2447,7 +2447,7 @@ static bool gmap_test_and_clear_dirty_pmd(struct gmap *gmap, pmd_t *pmdp,
return false;
/* Clear UC indication and reset protection */
- pmd_val(*pmdp) &= ~_SEGMENT_ENTRY_GMAP_UC;
+ set_pmd(pmdp, clear_pmd_bit(*pmdp, __pgprot(_SEGMENT_ENTRY_GMAP_UC)));
gmap_protect_pmd(gmap, gaddr, pmdp, PROT_READ, 0);
return true;
}