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Peter Anvin" , xen-devel@lists.xenproject.org, Arnd Bergmann Subject: [PATCH v4 1/2] x86/xen: add prototypes for paravirt mmu functions Date: Wed, 14 Jun 2023 09:35:00 +0200 Message-Id: <20230614073501.10101-2-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230614073501.10101-1-jgross@suse.com> References: <20230614073501.10101-1-jgross@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1686728138259100001 Content-Type: text/plain; charset="utf-8" The paravirt MMU functions called via the PV_CALLEE_SAVE_REGS_THUNK() macro can't be defined to be static, as the macro is generating a function via asm() statement calling the paravirt MMU function. In order to avoid warnings when specifying "-Wmissing-prototypes" for the build, add local prototypes (there should never be any external caller of those functions). Reported-by: Arnd Bergmann Signed-off-by: Juergen Gross --- arch/x86/xen/mmu_pv.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c index b3b8d289b9ab..e0a975165de7 100644 --- a/arch/x86/xen/mmu_pv.c +++ b/arch/x86/xen/mmu_pv.c @@ -86,6 +86,22 @@ #include "mmu.h" #include "debugfs.h" =20 +/* + * Prototypes for functions called via PV_CALLEE_SAVE_REGS_THUNK() in order + * to avoid warnings with "-Wmissing-prototypes". + */ +pteval_t xen_pte_val(pte_t pte); +pgdval_t xen_pgd_val(pgd_t pgd); +pmdval_t xen_pmd_val(pmd_t pmd); +pudval_t xen_pud_val(pud_t pud); +p4dval_t xen_p4d_val(p4d_t p4d); +pte_t xen_make_pte(pteval_t pte); +pgd_t xen_make_pgd(pgdval_t pgd); +pmd_t xen_make_pmd(pmdval_t pmd); +pud_t xen_make_pud(pudval_t pud); +p4d_t xen_make_p4d(p4dval_t p4d); +pte_t xen_make_pte_init(pteval_t pte); + #ifdef CONFIG_X86_VSYSCALL_EMULATION /* l3 pud for userspace vsyscall mapping */ static pud_t level3_user_vsyscall[PTRS_PER_PUD] __page_aligned_bss; --=20 2.35.3