diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-17 08:31:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-17 08:31:49 -0700 |
| commit | c6460daea23dcd160f2dc497c64b4c882ea1de69 (patch) | |
| tree | dc8249def0fae1dceb6fb1bb92c6ec245c1c861f /arch | |
| parent | bdb575f872175ed0ecf2638369da1cb7a6e86a14 (diff) | |
| parent | d859ed25b24289c87a97889653596f8088367e16 (diff) | |
| download | linux-c6460daea23dcd160f2dc497c64b4c882ea1de69.tar.gz | |
Merge tag 'for-linus-5.15b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross: - The first hunk of a Xen swiotlb fixup series fixing multiple minor issues and doing some small cleanups - Some further Xen related fixes avoiding WARN() splats when running as Xen guests or dom0 - A Kconfig fix allowing the pvcalls frontend to be built as a module * tag 'for-linus-5.15b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: swiotlb-xen: drop DEFAULT_NSLABS swiotlb-xen: arrange to have buffer info logged swiotlb-xen: drop leftover __ref swiotlb-xen: limit init retries swiotlb-xen: suppress certain init retries swiotlb-xen: maintain slab count properly swiotlb-xen: fix late init retry swiotlb-xen: avoid double free xen/pvcalls: backend can be a module xen: fix usage of pmd_populate in mremap for pv guests xen: reset legacy rtc flag for PV domU PM: base: power: don't try to use non-existing RTC for storing data xen/balloon: use a kernel thread instead a workqueue
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/xen/enlighten_pv.c | 7 | ||||
| -rw-r--r-- | arch/x86/xen/mmu_pv.c | 7 |
2 files changed, 12 insertions, 2 deletions
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index 753f63734c13..349f780a1567 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -1214,6 +1214,11 @@ static void __init xen_dom0_set_legacy_features(void) x86_platform.legacy.rtc = 1; } +static void __init xen_domu_set_legacy_features(void) +{ + x86_platform.legacy.rtc = 0; +} + /* First C function to be called on Xen boot */ asmlinkage __visible void __init xen_start_kernel(void) { @@ -1359,6 +1364,8 @@ asmlinkage __visible void __init xen_start_kernel(void) add_preferred_console("xenboot", 0, NULL); if (pci_xen) x86_init.pci.arch_init = pci_xen_init; + x86_platform.set_legacy_features = + xen_domu_set_legacy_features; } else { const struct dom0_vga_console_info *info = (void *)((char *)xen_start_info + diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c index 1df5f01529e5..8d751939c6f3 100644 --- a/arch/x86/xen/mmu_pv.c +++ b/arch/x86/xen/mmu_pv.c @@ -1518,14 +1518,17 @@ static inline void xen_alloc_ptpage(struct mm_struct *mm, unsigned long pfn, if (pinned) { struct page *page = pfn_to_page(pfn); - if (static_branch_likely(&xen_struct_pages_ready)) + pinned = false; + if (static_branch_likely(&xen_struct_pages_ready)) { + pinned = PagePinned(page); SetPagePinned(page); + } xen_mc_batch(); __set_pfn_prot(pfn, PAGE_KERNEL_RO); - if (level == PT_PTE && USE_SPLIT_PTE_PTLOCKS) + if (level == PT_PTE && USE_SPLIT_PTE_PTLOCKS && !pinned) __pin_pagetable_pfn(MMUEXT_PIN_L1_TABLE, pfn); xen_mc_issue(PARAVIRT_LAZY_MMU); |